Publications

Selected Publications

  1. Johnson, G., Bailey, T., Hatinoglu, D., Nwachukwu, O., Peller, J., Doudrick, K., Van Dam, B., Ross, L., Apul, O.G.* 2024.  Land-sea connection of microplastic fiber pollution in Frenchman Bay, Maine. Environmental Engineering Science.
  2. White. L., Miner, J., McKinney, L., Pierce, L., Folley, A., Larrabee, A., Scrapchansky, L., Fessler, W., Choudhary, M., Kamalanathan, M., Purina, R., Zare, S., Perry, E., Edalatpour, S., Apul, O.G., Howell, C. (submitted). Large-Area Sensor Permits Near-Continuous Multi-Point Measurements of Aqueous Biological and Chemical Analytes. ACS Sensors.
  3. Mensah, K., Magdaleno, A., Yaparatne, S., Garcia-Segura, S., Apul, O. 2024. Suspended air nanobubbles in water can shuttle polystyrene nanoplastics to air-water interface. Environmental Science: Nano
  4. Kartik B., Doussiemo, D., Mushro, N., Rajwade, K., Kumar, A., Apul, O., Perreault, F. 2024. Effect of biofouling on organic contaminant adsorption by microplastics. Environmental Toxicity and Chemistry.
  5. Apul, O.G.* Choudhary, M. 2024. Interplay of adsorptive properties, inner sheet distance and dielectric reactivity of graphenes upon edge functionalization. Chemical Engineering Science.
  6. Yaparatne, S., Morón-López, J., Bouchard D., Connell S., Garcia-Segura, S., Apul O.G.* 2024. Nanobubble applications in aquaculture industry for improving harvest yield, wastewater treatment, and disease control. Science of the Total Environment. 931: 172687..
  7. Moavenzadeh, S., Flores, A., Kopec, D., Zambrano, L., Apul, O.G.* (revisions requested) Permeation of Per- and Polyfluoroalkyl Substances in Solid Waste Management Facilities are Linked to Mechanical Failures of High-Density Polyethylene Geomembranes. Environmental Science and Technology.
  8. Magdaleno, A., Cerrón-Calle, G., dos Santos, A., Lanza, M., Apul, O.G., Garcia-Segura, S. 2024. Unlocking the Potential of Nanobubbles: Achieving Exceptional Gas Efficiency in Electrogeneration of Hydrogen Peroxide. Small. 20: 2470021.
  9. Shahrokhinia, A., Tafazoli, S., Rijal, S., Shuster, D., Scanga, R., Morefield, D., Garay, J., Rocheleau, R., Kashani, M., Nagarajan, R., Apul, O.G., Reuther J. 2024. Dynamic Worm-Gel Materials as Tunable, Regenerable Adsorbents for Water Treatment. ACS Macromolecules. 57: 628-639.
  10. Moron-Lopez, J., Montenegro-Ayo, R., Maya, A., Yaparatne, S., Hernandez-Molina, M., Graf, J., Apul, O.G., Garcia-Segura, S., Matula, E. 2023. Incorporation of Nanobubbles in Spaceflight Food Production Systems. Journal of Plant Interactions. 18: 2271492.
  11. Apul, O.G.*, Howell, C., Hatinoglu, D. 2023. Per- and Polyfluoroalkyl Substances (PFAS) at the Interface of Biological and Environmental Systems. Biointerphases. 18: 050201.
  12. Hatinoglu, D., Adan, A., Perreault, F., Imamoglu, I., Apul, O.G.* 2023. Predictive model development for adsorption of aromatic compounds by microplastics. Chemical Engineering Science. 282: 119233.
  13. Hatinoglu, D., Lee., J., Fortner J., Apul, O.G.* 2023. Superparamagnetic iron oxide nanoparticles as additives for microwave-based sludge pre-hydrolysis: A perspective. Environmental Science and Technology. 57: 12191-12200.
  14. Moavenzadeh Ghaznavi, S., Zimmerman, C., Shea, M.E., MacRae, J., Peckenham, J., Noblet, C., Apul, O.G., Kopec, D. 2023. Management of PFAS laden wastewater sludge in Maine: Perspectives on a wicked problem. Biointerphases. 18: 041004.
  15. Zhang, Y., Thomas, A., Apul, O.G., Venkatesan, A. 2023. Coexisting cations and long chain per- and polyfluoroalkyl substances (PFAS) inhibit the adsorption of short chain PFAS by granular activated carbon. Journal of Hazardous Materials. 460: 132378.
  16. Ersan, G., Brienza, M., Mulchandani, A., Apul, O.G., Garcia-Segura, S. 2023. Trends on arsenic species removal by metal-based nanoadsorbents. Current Opinion in Environmental Science & Health. 34: 100478.
  17. Yaparatne, S., McCarthy, M., Nicoloro, L., Fisher, N., Apul, O.G.*, Graf, J., Barrett, L., George, O. 2023. Evaluation of a new commercial catalyst for CO oxidation for environmental control and life support applications. 52nd International Conference on Environmental Systems – ICES 2023 (peer-reviewed proceeding).
  18. Barrios, A., Apul, O.G., Perreault, F. 2023. Increasing bromide removal by graphene-silver composites: nanoparticulate silver enhances bromide selectivity through direct surface interactions. Chemosphere. 330: 138711.
  19. Sonmez-Baghirzade, B., Biswas, P., Moavenzadeh Ghaznavi, S., Frederick, B., Reuther, J., Apul, O.G.* 2023. Accessibility of adsorption sites for superfine powdered activated carbon incorporated into electrospun polystyrene fibers. Chemical Engineering Journal. 461: 142009.
  20. Biswas, P., Shuster, D., Sonmez-Baghirzade, B., Scanga, R., Harris, S., Tran, C., Apul, O.G.*, Reuther, J.* 2023. Oxime-Functionalized, Non-Woven Nanofabrics for Rapid, Inexpensive Nerve-Agent Decontamination. ACS Applied Nano Materials. 6: 3425-3434.
  21. Collins, A., Ateia, M., Bhagat, K., Ohno, T., Perreault, F., Apul, O.G.* 2023. Emerging Investigator Series: Microplastic-based Leachate Formation under UV Irradiation: The Extent, Characteristics and Mechanisms. Environmental Science: Water Research and Technology. 9: 363-374.
  22. Hatinoglu, D., Perreault, F., Apul, O.G.* 2023. Modified linear solvation energy relationships for adsorption of perfluorocarboxylic acids by microplastics. Science of the Total Environment. 860: 160524.
  23. Apul, O.G.*, Garcia-Segura, S., Qian, J. 2022. Advanced materials and novel processes for safe and sustainable water treatment. Chemical Engineering Journal Advances. 100403.
  24. McAlexander, B., Apul, O.G., MacRae, J., Olson, M. 2022. Greenhouse Gas Emissions Estimates for Activated Carbon Treatment of PFAS in Maine Drinking Water. Maine Policy Review. 31: 39-47.
  25. Egitto, J., Latayan, J., Pagsuyoin, S., Apul, O.G.*, Agar, E.* 2022. Towards selective removal of bromide from drinking water resources using electrochemical desalination. Chemical Engineering Journal Advances. 12: 100369.
  26. Costigan, E., Collins, A., Hatinoglu, M.D., Bhagat, K., MacRae, J., Perreault, F., Apul, O.G.* 2022. Adsorption of Organic Pollutants by Microplastics: Overview of A Dissonant Literature. Journal of Hazardous Materials Advances. 6: 100091.
  27. Yildirim, T., Yaparatne, S., Graf, J., Garcia-Segura, S., Apul, O.G.* 2022. Electrostatic forces and higher order curvature terms of Young-Laplace equation on nanobubble stability in water. npj Clean Water. 5: 1-3.
  28. Apul, O.G., Arrowsmith, S., Hall, C., Miranda, E., Alam, F., Dahlen, P., Sra, K., Kamath, R., McMillen, S., Sihota, N., Westerhoff, P., Krajmalnik-Brown, R., Delgado, A. 2022. Biodegradation of petroleum hydrocarbons in a weathered, unsaturated soil is inhibited by peroxide oxidants. Journal of Hazardous Materials. 433: 128770
  29. Yaparatne, S., Doherty, Z., Magdaleno, A., Matula, E., MacRae, J., Garcia-Segura, S., Apul, O.G.* 2022. Effect of air nanobubbles on oxygen transfer, oxygen uptake, and diversity of aerobic microbial consortium in activated sludge reactors. Bioresource Technology. 351: 127090.
  30. Bhagat, K., Barrios, A., Rajwade, K., Kumar, A., Oswald, J., Apul, O.G., Perreault, F. 2022. Aging of microplastics increases their adsorption affinity towards organic contaminants. Chemosphere. 298: 134238.
  31. Shahrokhinia, A., Rijal, S., Sonmez Baghirzade, B., Scanga, R., Biswas, P., Tafazoli, S., Apul, O.G., Reuther, J. 2022. Chain Extensions in PhotoATRP-Induced Self-Assembly (PhotoATR-PISA): A Unique Route to Ultra-High Solids Concentrations Click Nanoparticle Networks for Adsorption in Water Treatment Applications. Macromolecules. 55: 3699-3710.
  32. Areeb, H., Sonmez Baghirzade, B., Apul, O.G., Kirisits, M.J., Dev, S., Das, S., Islam, S., Lai, Y., Huntington, H., Umanzor, S., Wan-Ting, C., Aggarwal, S., Saleh, N. 2022. Symbiotic engineering: A novel approach for environmnetal remediation. ACS ES&T Engineering. 2: 606-616.
  33. Hoogesteijn von Reitzenstein, N., Sonmez, B., Pruitt, E., Hristovski, K., Westerhoff, P. Apul, O. G.* 2022. Comparing the Morphologies and Adsorption Behavior of Electrospun Polystyrene Composite Fibers with 0D Fullerenes, 1D Multiwalled Carbon Nanotubes and 2D Graphene Oxides. Chemical Engineering Journal Advances. 9: 100199.
  34.  
    Cerron-Calle, G., Magdaleno, A., Graf, J., Apul, O.G., Garcia-Segura, S. 2022. Elucidating CO2 nanobubble interfacial reactivity and impacts on water chemistry. Journal of Colloid and Interface Science. 607: 720-728.
  35. Tang, Y., Lee, C.S., Walker, H., Gobler C., Apul, O.G., Venkatesan, A., Mai, X. 2021. Effect of residual H2O2 on the removal of advanced oxidation byproducts by two types of granular activated carbon. Journal of Environmental Chemical Engineering. 9: 106838.
  36. Lafaille, R., Bozkurt, Y., Pruitt, E., Lewis, J., Bernier, R., Kong, D., Westerhoff, P., Dahlen, P., Apul, O.G.*, 2021. Repeatable Use Assessment of Silicon Carbide as Permanent Susceptor Bed in Ex Situ Microwave Remediation of Petroleum-Impacted Soils. Case Studies in Chemical and Environmental Engineering. 4: 100116.
  37. Bakkaloglu, S., Ersan, M., Karanfil, T., Apul, O.G.* 2021. Effect of superfine pulverization of powdered activated carbon on adsorption of carbamazepine in natural source waters. Science of the Total Environment. 793: 148473.
  38. Sonmez, B., Zhang, Y., Reuther, J., Saleh, N., Venkatesan, A., Apul, O.G.* 2021. Thermal Regeneration of Spent Granular Activated Carbon Presents an Opportunity to Break the Forever PFAS Cycle. Environmental Science and Technology, 55: 5608-5619.
  39. Bozkurt, Y., Lafaille, R., Lu, D., Zhang, X., Giles, R., Apul, O.G.* 2021. Effects of Carbonaceous Susceptors during Microwave Pretreatment of Waste Activated Sludge and Subsequent Anaerobic Digestion. Bioresource Technology Reports, 13: 100641.
  40. Sabo-Attwood, T., Apul, O.G., Bisesi Jr., J.H., Kane, A.S., Saleh, N. 2021. Nano-scale Applications in Aquaculture: Opportunities for Improved Production and Disease Control. Journal of Fish Disease, 44: 359-370.
  41. Apul, O.G., Grissom, R., Damali, U., Toof, R. 2021. Divided Perception of Drinking Water Safety: Another Manifestation of America’s Racial Gap. ACS ES&T Water, 1: 6-7.
  42. Apul, O.G., Grissom, R., Damali, U., Toof, R. 2021. Response to the Comment “Closing America’s Racial Gap around Drinking Water Quality Perceptions and the Role of the Environmental Engineering and Science Academic Community”, ACS ES&T Water, 1: 461.
  43. Ramirez-Sanchez, I., Apul, O.G., Saleh, N. 2020. Photocatalytic Activity of Micron-scale Brass on Emerging Pollutant Degradation in Water: Mechanism Elucidation and Removal Efficacy Assessment. Royal Society of Chemistry Advances, 10: 39931-39942.
  44. Apul, O.G., Perreault, F., Ersan, G., Karanfil, T. 2020. Linear solvation energy relationship development for adsorption of synthetic organic compounds by carbon nanomaterials: an overview of the last decade. Environmental Science: Water Research and Technology, 6: 2949-2957.
  45. Naik, R., Rowles, L., Hossain, A., Yen, M., Aldossary, R., Apul, O.G., Conkle, J., Saleh, N. 2020. Microplastic Particle versus Fiber Generation During Photo-Transformation in Simulated Seawater. Science of the Total Environment, 736: 139690.
  46. Partlan, E., Ren, R., Apul, O.G., Ladner, D., Karanfil, T. 2020. Adsorption kinetics of synthetic organic contaminants onto superfine powdered activated carbon. Chemosphere, 253, 126628.
  47. Apul, O.G., Rowles, S., Khalid, A., Karanfil, T., Richardson, S., Saleh, N. 2020. Transformation potential of cannabinoids during their passage through engineered water treatment systems: A perspective. Environment International, 137, 105586.
  48. Khalid, A., Rowles, L.S., Ateia, M., Xiao, M., Ramirez-Sanchez, I., Bello, B., Karanfil, T., Saleh, N., Apul, O.G. 2020. Mesoporous Activated Carbon Shows Superior Adsorption Affinity for 11-Nor-9-Carboxy-Δ9-Tetrahydrocannabinol in Water. npj Clean Water, 3: 1-5. 
  49. Bozkurt, Y., Apul, O.G. 2020. Critical Review for Microwave Pretreatment of Waste Activated Sludge Prior to Anaerobic Digestion. Current Opinion in Environmental Science and Health. 14: 1-9. 
  50. Lu, D., Liu, X., Apul, O.G., Zhang, L., Ryan, D., Zhang, X. 2019. Optimization of biomethane production from anaerobic co-digestion of microalgae and septic tank sludge. Biomass and Bioenergy, 127: 105266.
  51. Ersan, G., Kaya, Y., Ersan, M., Apul, O.G., Karanfil, T. 2019. Adsorption kinetics and aggregation for three classes of carbonaceous adsorbents in the presence of natural organic matter. Chemosphere, 229: 514-525.
  52. Atkinson, A., Apul, O.G., Schneider, O., Garcia-Segura, S., Westerhoff, P. 2019. Nanobubble technologies offer opportunities to improve water treatment. Accounts for Chemical Research, 52: 1196-1205.
  53. Saleh, N., Apul, O.G., Karanfil, T. 2019. The Genesis of a Critical Environmental Concern: Cannabinoids in our Water Systems. Environmental Science and Technology, 53: 1746-1747 (Scientific Opinion, Non-Peer Reviewed).
  54. Saleh, N., Khalid, A., Tian, Y. Ayres, C., Sabaraya, I., Pietari, J., Hanigan, D., Chowdhury, I., Apul, O.G. 2019. Degradation and removal of poly- and per-fluoroalkyl substances from aqueous systems by nano-enabled water treatment technologies. Environmental Science: Water Research and Technology, 5: 198-208.
  55. Ersan, G., Apul, O.G., Karanfil, T. 2019. Predictive Models for Adsorption of Organic Contaminants by Graphene Nanosheets: Comparison with Carbon Nanotubes. Science of the Total Environment, 654: 28-34.
  56. Kidd, J., Barrios, A., Apul, O.G., Westerhoff, P. Perreault, F. 2018. Removal of bromide from surface water: A comparison between silver-impregnated graphene oxide and silver-impregnated powdered activated carbon. Environmental Engineering Science, 35: 988-995.
  57. Gan, W., Venkatesan, A., Apul, O.G., Perreault, F., Yang, X. Westerhoff, P. 2018. Bromide and other halide ion removal from drinking waters using silver-amended coagulation. Journal of American Water Works Association. 110: 13-24.
  58. Ersan, G., Apul, O.G., Perreault, F., Karanfil, T. 2017. Adsorption of organic contaminants by graphene nano sheets: A review. Water Research, 126: 385-398.
  59. Linard, E., Apul, O.G., Karanfil, T., van der Hurk, P., Klaine, S. 2017. Bioavailability of carbon nanomaterial-adsorbed polycyclic aromatic hydrocarbons to P. promelas: influences of adsorbate molecular size and configuration. Environmental Science and Technology, 51: 9288-9296.
  60. Ateia, M., Apul, O.,G., Shimizu, Y., Muflihah, A., Yoshimura, C., Karanfil, T. 2017. Elucidating adsorptive fractions of natural organic matter on carbon nanotubes. Environmental Science and Technology, 51: 7101-7110.
  61. Apul, O.G., Hoogesteijn von Reitzenstein, N., Schoepf, J., Ladner, D. Hristovski, K., Westerhoff, P. 2017. Superfine powdered activated carbon incorporated into electrospun polystyrene fibers preserve adsorption capacity. Science of the Total Environment, 592: 458-464.
  62. Garcia, J., Markovski, J., Gifford, J.M.K., Apul, O.G., Hristovski, K.D. 2017. The effect of metal (hydro)oxide nano-enabling on intraparticle mass transport of organic contaminants in hybrid granular activated carbon. Science of the Total Environment, 586: 1219-1227.
  63. Chen, C., Apul, O.G., Karanfil, T. 2017. Removal of bromide from surface waters using silver impregnated activated carbon. Water Research, 113: 223-230
  64. Apul, O.G., Delgado, A., Kidd, J., Alam, F., Dahlen, P., Westerhoff, P. 2016. Carbonaceous nano-additives augment microwave-enabled thermal remediation of soils containing petroleum hydrocarbons. Environmental Science: Nano, 3: 997-1002.
  65. Apul, O.G., Dahlen, P., Delgado, A., Sharif, F. and Westerhoff, P. 2016. Treatment of heavy, long-chain petroleum-hydrocarbon impacted soils using chemical oxidation. Journal of Environmental Engineering-ASCE, 04016065.
  66. Ersan, G., Kaya, Y., Apul, O.G. and Karanfil, T. 2016. Adsorption of organic contaminants by graphene nanosheets, carbon nanotubes and granular activated carbons under different natural organic matter preloading conditions. Science of the Total Environment, 565: 811-817.
  67. Ersan, G., Apul, O.G. and Karanfil, T. 2016. Linear solvation energy relationships (LSER) for adsorption of organic compounds by carbon nanotubes. Water Research, 98: 28-38.
  68. Partlan, E., Davis, K., Ren, Y., Apul, O.G., Mefford, T.M., Karanfil, T. and Ladner, D. 2016. Effect of bead milling on chemical and physical characteristics of activated carbons pulverized to superfine sizes. Water Research, 89: 161-170.
  69. Zhou, Y., Apul, O.G. and Karanfil, T. 2015. Adsorption of halogenated aliphatic contaminants by graphene nanomaterials. Water Research, 79: 57-67.
  70. Apul, O.G., Zhou, Y. and Karanfil, T. 2015. Mechanisms and modeling of halogenated aliphatic contaminant adsorption by carbon nanotubes. Journal of Hazardous Materials, 295: 138-144.
  71. Linard, E., Van den Hurk, P., Karanfil, T., Apul, O.G. and Klaine, S. 2015. Influence of carbon nanotubes on the bioavailability of fluoranthene. Environmental Toxicology and Chemistry, 34: 658-666.
  72. Bliznyuk, V., Duval, C., Apul, O.G., Seliman, A., Husson, S and DeVol, T. 2015. High porosity scintillating polymer resins for ionizing radiation sensor applications. Polymer, 56: 271-279.
  73. Apul, O.G. and Karanfil, T. 2015. Adsorption of synthetic organic contaminants by carbon nanotubes: A critical review. Water Research, 68: 34-55.
  74. Wang, Q.L., Apul, O.G., Xuan, P., Luo, F. and Karanfil, T. 2013. Development of 3D QSPR model for adsorption of aromatic compounds by carbon nanotubes: Comparison among multiple linear regression, artificial neural network and support vector machine. Royal Society of Chemistry Advances, 3: 23924-23934.
  75. Ellerie, J.R., Apul, O.G., Karanfil, T. and Ladner, D.A. 2013. Comparing graphene, carbon nanotube, and superfine powdered activated carbon as adsorptive coating materials for ultrafiltration membranes. Journal of Hazardous Materials, 261:91-98.
  76. Apul, O.G., Wang, Q., Shao, T., Rieck J. and Karanfil, T. 2013. Predictive model development for adsorption of aromatic contaminants by multi-walled carbon nanotubes. Environmental Science and Technology, 47(5):2295-2303.
  77. Apul, O.G., Wang, Q., Zhou, Y. and Karanfil, T. 2013. Adsorption of aromatic organic contaminants by graphene nanosheets: Comparison with carbon nanotubes and activated carbon. Water Research, 47(4):1648-1654.
  78. Apul, O.G., Shao, T., Zhang, S. and Karanfil, T. 2012. The impact of carbon nanotube morphology on phenanthrene adsorption. Environmental Toxicology and Chemistry, 31(1):73-78.
  79. Apul, O.G. and Sanin, F.D. 2010. Ultrasonic pretreatment and subsequent anaerobic digestion under different operational conditions. Bioresource Technology, 101(23):8984-8992.
  80. Apul, O.G., Atalar, I., Zorba, G.T. and Sanin, F.D. 2010. The dewaterability of disintegrated sludge samples before and after anaerobic digestion. Drying Technology, 28(7):901-909.
  81. Apul, O.G., Dogan, I. and Sanin, F.D. 2009. Can capillary suction time be an indicator for sludge disintegration? Journal of Residual Science and Technology, 6(3):99-104.

Other Scholarly Publications And Presentations

Thesis and Dissertation

  1. Apul, O.G. Predictive Model Development for Adsorption of Organic Contaminants by Carbon Nanotubes. Clemson University, August 2014, Ph.D. Dissertation, Clemson, SC.
  2. Apul, O.G. Municipal Sludge Minimization: Evaluation of Ultrasonic and Acidic Pretreatment Methods and Their Subsequent Effects on Anaerobic Digestion. Middle East Technical University, February 2009, M.S. Thesis, Ankara, Turkey.

 Presentations (Invited Keynote Address and Invited Plenary Lecture)

  1. Apul, O.G. Carbon Nanomaterial Applications in Drinking Water Treatment. November 2022, The 5th International Congress of Nanoscience and Nanotechnology, Virtual Talk. 
  2. Apul, O.G. En Route to Pragmatic and Responsible Use of Carbon Nanomaterials for Drinking Water Treatment. November 2021, Sustainable Nanotechnology Organization Conference Emerging Investigator Plenary Lecture Series, Virtual Event.
  3. Apul, O.G., Karanfil, T., Yoshimura, C. Adsorption of Organic Contaminant by Carbonaceous Adsorbents: Engineered and Natural Applications. December 2016, Academy of co-Creative Education of Environment and Energy Science Forum, San Diego, CA.

 Presentations (Other Invited Presentations)

  1. Apul, O.G. Modernization of Water Treatment to Embrace Water Challenges In "The Anthropocene Epoch". April 2024. University of Massachusetts Amherst. Stockbridge School of Agriculture. Stockbridge Seminar Series. Amherst, MA.
  2. Apul, O.G. Modernization of Water Treatment Technologies in the “Anthropocene Epoch”. February 2024. Virginia Tech University. Civil and Environmental Engineering. Blacksburg, VA.
  3. Apul, O.G. Water Treatment in the “Anthropocene Epoch”. February 2024. New York University. Civil and Urban Engineering. Virtual Oral Presentation.
  4. Hatinoglu, D., Alulema, P., Hanigan, D., Apul, O.G. Thermal regeneration of PFAS-laden granular activated carbon: An opportunity to break the forever PFAS cycle, Hacettepe University, Environmental Engineering Seminar, December 2023 (Oral Presentation) Ankara, Turkey.
  5. Apul, O.G. Water Treatment in the “Anthropocene Epoch”. September 2023. Weston Lecture at University of Wisconsin Madison. Madison WI.
  6. Apul, O.G. Pushing the Envelope for Carbon Nanomaterial Application in Drinking Water Treatment. May 2023. Civil and Environmental Engineering Seminar at University of California Irvine. Virtual Presentation.
  7. Apul, O.G. Tiny Bubbles with Massive Potential: Overview of Nanobubble-Enabled Water and Wastewater Treatment Technologies. April 2023. New York State Center for Clean Water Technology at Stony Brook University Research Seminar. Virtual Presentation.
  8. Apul, O.G. Thermal Regeneration of Spent Granular Activated Carbon to Break the Forever PFAS Cycle. February 2023. The Maine Water Utilities Association Annual Meeting. Augusta, ME.
  9. Apul, O.G. Carbon Nanomaterials for Drinking Water Treatment January 2023. University of Maine, Chemistry Department Graduate Research Seminar Series. Orono, ME
  10. Apul, O.G. Microplastics: The Elephant in the Room. December 2022. Bangor Area Stormwater Group Monthly Meeting. Virtual Presentation. 
  11. Apul, O.G. Carbon-based Nanomaterials for Advanced Water Treatment Technologies. November 2022. Middle East Technical University, Environmental Engineering Seminar. Virtual Presentation.
  12. Apul, O.G. Pushing the Envelope of Carbon Nanomaterial Applications in Drinking Water Treatment. September 2022, Georgia Institute of Technology Environmental Engineering Virtual Seminar Series.
  13. Kopec, D., Apul, O.G., Peckenham, J., Noblet, C. The Forever Chemicals: PFAS in Maine, April 2022, University of Maine, Senator George J. Mitchell Center for Sustainability Solutions Seminar Series, Orono, ME.
  14. Apul, O.G. Adsorption of PFAS by Microplastics: One Water, Two Crises, March 2022, Water Environment Federation, Public Health and Water Conference & Wastewater Disease Surveillance Summit - Status Update on PFAS Challenges and Opportunities: Looking Beyond Documented Occurrence Session (virtual event).
  15. Apul, O.G. An Overview of Nano-Scale Opportunities for Water Treatment Applications, March, 2022, University of Massachusetts Amherst, Department of Civil and Environmental Engineering, Environmental and Water Resources Seminar, Amherst, MA (virtual event).
  16. Apul, O.G. Nanotechnology and Responsible Water Treatment, April 2021, University of Florida, Department of Environmental and Global Health Seminar Series, Gainesville, FL (virtual event).
  17. Apul, O.G. Water Treatment: An Overview of Modern‐day Challenges and Technological Opportunities, April 2021, University of Maine, CHB Distinguished Lecture Series, Orono, ME (virtual event).
  18. Apul, O.G. Sustainable Water Treatment – Moving from Victorian Era Technology to Nanotechnology, November 2020, University of Maine, Senator George J. Mitchell Center for Sustainability Solutions Seminar Series, Orono, ME (virtual event).
  19. Apul, O.G. Carbon Nanomaterials for Innovations in Drinking Water Treatment, February 2020, University of Maine, Environmental Engineering Seminar Series, Orono, ME.
  20. Apul, O.G., Sewage Sludge as a Source of Biogas, February 2020, Massachusetts Institute of Technology Cleantech Landscape Event, Boston, MA.
  21. Apul, O.G. Predictive Model Development for Adsorption of Synthetic Organic Contaminants by Carbon Nanomaterials, April 2019, McGill University, Environmental Engineering Seminar, Montreal, QB, Canada.
  22. Apul, O.G. Carbon Nanomaterials for Innovations in Drinking Water Treatment, February 2019, Stony Brook University, Civil and Environmental Engineering Research Seminar, Stony Brook, NY.
  23. Apul, O.G. Carbon-based Nanomaterials for Innovations in Drinking Water Treatment, March 2018, University of Florida, Environmental Engineering Seminar, Gainesville, FL.
  24. Apul, O.G. Adsorption of Organic Compounds by Carbon Nanomaterials: Exploring Intermolecular Interactions to Advance in Water Treatment Technologies. November 2017, University of Massachusetts Amherst Environmental Engineering Seminar, Amherst, MA.
  25. Apul, O.G., Pruitt, E., Dahlen, P., Westerhoff, P. Nanoparticle-Augmented Microwave Remediation of Soils, January 2018, Chevron HHSRG Year-End Meeting, Houston, TX.
  26. Apul, O.G., Zeng, C., Delgado, A., Westerhoff, P., Dahlen, P. Krajmalnik-Brown, R., Surfactant and Oxidant Enhanced Bioremediation, January 2018, Chevron HHSRG Year-End Meeting, Houston, TX.
  27. Apul, O.G., Reid, T., Westerhoff, P. Experimental Investigation of 2-Methylisoborneol (MIB) and Geosmin Removal by Powdered Activated Carbon for Spartanburg Regional Joint Water System, September 2016, ASU Regional Water Quality Workshop, Tempe, AZ.
  28. Apul, O.G., Predictive model development for adsorption of organic contaminants by carbon nanotubes. Environmental Engineering Seminar at Arizona State University, February 2015, Tempe, AZ.
  29. Apul, O.G. Turkey’s Water Perspective, American Water Works Association Annual Conference, June 2012, Dallas, TX.
  30. Apul, O.G., Adsorption of Organic Contaminants by Carbon Nanotubes: Development of a Predictive Model. Environmental Engineering Summer Seminars at Clemson University, June 2011, Clemson, SC.
  31. Apul, O.G. Evaluation of Acidic and Ultrasonic Sludge Pretreatment Methods. Environmental Engineering Seminar at Middle East Technical University, April 2008, Ankara, Turkey

Oral and Poster Presentations (underlined authors are advisees)

  1. Hatinoglu, D., Alulema, P., Hanigan, D., Apul, O.G. Thermal regeneration of PFAS-laden granular activated carbon: An opportunity to break the forever PFAS cycle, AWWA WQTC, November 2023 (Oral Presentation).
  2. Choudhary, M., Wang W., Mukhopadhyay S.M., Apul, O.G. Atomically Precise Tailoring of Graphene Nanosheets to Control Properties that are Expedient for Water Treatment, Gordon Research Conference: Environmental Nanotechnology, June 2023, Newry, ME (Poster Presentation).
  3. Moavenzadeh Ghaznavi, S., Flores Azua, A. J., Kopec, D., Zambrano Cruzatty, L., Apul, O.G. Integrity of HDPE geomembranes play a critical role on permeation of per- and polyfluoroalkyl substances (PFAS) in solid waste management facilities, AEESP Research & Education Conference, Boston, MA, June 2023 (Poster Presentation).
  4. Choudhary, M., Wang W., Mukhopadhyay S.M., Apul, O.G. Synthesis of Edge-Tailored Graphene Oxide for Removal of Organic Contaminants from Water and its Regeneration Through Microwave Heating, Responding Together to Global Challenges, AEESP Research and Education Conference, Boston, MA, June 2023 (Oral Presentation).
  5. Hatinoglu, D., Lee, J., Fortner, J., Apul, O.G. Superparamagnetic iron oxide nanoparticles (SPIONs) as additives for microwave-based sludge pre-hydrolysis, AEESP Research and Education Conference, Boston, MA June 2023 (Poster Presentation).
  6. Yaparatne, S., McCarthy, M., Nicoloro, L., Fisher, N., Apul, O.G., Graf, J., Barrett, L., George, O. Evaluation of a new commercial catalyst for CO oxidation for environmental control and life support applications. 52nd International Conference on Environmental Systems – ICES 2023, Calgary, Alberta, Canada July 2023 (Oral Presentation).
  7. Bhagat, K., Barrios, A., Rajwade, K., Apul, O.G., Oswald, J., Perreault, F. Weathering of microplastics in the environment affects their adsorption affinity for organic contaminants. National Nanotechnology Coordinated Infrastructure, (Virtual), April 2023 (Oral Presentation).
  8. McCarthy, M., Yaparatne, S., Nicoloro, L., Fisher, N.R., Graf, J.C., Barret, L.W., George, O.N., Apul, O.G. Removal of carbon monoxide in environmental control and life support systems for space exploration, UMaine Student Symposium, April 2023 (Poster Presentation).
  9. Mensah, K., Yaparatne, S., Doherty, Z. E., Apul, O. G. Fundamental evaluation of nanobubble mobilization and generation via mild, Isothermal ultrasonic irradiation. University of Maine Student Symposium, Orono, Maine. April 2023 (Poster presentation).
  10. Niu R., Mensah K., Walker B, Smith S., Apul, O.G. Ode to Nanobubble: A Fusion of Science, Music, and Art. University of Maine Student Symposium, Orono, Maine. April 2023 (Poster presentation).
  11. Doherty, Z.E., Salem, S., E., Yaparatne, S., Apul, O.G. Enhanced removal of 2-methylisoborneol and Geosmin through nanobubble facilitated sonication. University of Maine Student Symposium, Orono, Maine. April 2023 (Poster presentation).
  12. McCarthy, M., Yaparatne, S., Nicoloro, L., Fisher, N.R., Apul, O.G. CO oxidation assessment of a new commercial catalyst for NASA environmental control and life support safety application, AIChE Eckhardt Northeast Student Regional Conference, April 2023 (Poster Presentation).
  13. Johnson, G., Bailey, T., Hatinoglu, M.D., Smith, S., Ross, L., Apul, O.G. Interpreting the Extent and Characteristics of Microplastics Pollution in Maine Freshwater Streams, and Analyzing Nanoplastics and How they Differ from Microplastics. University of Maine Student Symposium, April 2023 (Poster Presentation).   
  14. Moavenzadeh Ghaznavi, S., Choudhary, M., Apul, O.G., Kopec D. Evaluating available options for sustainable management of PFAS in wastewater sludge in Maine: Searching for solutions to a wicked problem. Maine Sustainability and Water Conference, March 2023 (Poster Presentation). 
  15. Johnson, G., Bailey, T., Hatinoglu, M.D., Smith, S., Ross, L., Apul, O.G. Interpreting the Extent and Characteristics of Microplastics Pollution in Maine Freshwater Streams to Guide a Holistic Mitigation Strategy. Maine Sustainability and Water Conference, March 2023 (Poster Presentation, best graduate student poster award)
  16. Zollitsch, B., Johnson, G., Ross, L., Smith, S., Noblet, C., Apul, O. Exploring the Relationship Between Stormwater and Microplastics Pollution. Maine Stormwater Conference, November 2022 (Oral Presentation).
  17. Sonmez Baghirzade, B., Biswas, P., Frederick, B., Reuther, J.F., Apul, O.G. A study for understanding the accessibility of sorption sites for superfine powdered activated carbon particles that are embedded in non-woven electrospun polystyrene fibers. Sustainable Nanotechnology Organization Conference, November 2022 (Oral Presentation).
  18. Yaparatne, S., Salem, S.E., Doherty, Z.E., Bouchard, D., Magdaleno, A., Garcia-Segura, S., Apul, O.G. Case studies for nanobubble-enabled oxygen mass transfer and pollutant removal. Sustainable Nanotechnology Organization Conference, November 2022 (Poster presentation).
  19. Apul, O.G., Yaparatne, S., Doherty, Z. Nanobubble facilitated mass transfer to remove persistent organic pollutants from unconventional drinking water sources for space exploration Maine Space Grant Consortium Ideas Lab, September 2022 (Oral Presentation).
  20. Moavenzadeh, S., Kopec, D., Apul, O.G. The interaction of per- and polyfluoroalkyl substances (PFAS) with landfill geomembrane and impact of liner integrity on PFAS seepage. EREF Intercontinental Landfill Research Symposium, September 2022 (Oral Presentation).
  21. Collins, A., Ateia, M., Bhagat, K., Ohno, T., Perreault, F., Apul, O.G. Microplastic leachate formation under UV irradiation: extent, characteristics, and mechanisms. AEESP Research and Education Conference, June 2022 (Poster Presentation).
  22. Yaparatne, S., Doherty, Z.E., Magdaleno, A.L., Matula, E.E., MacRae, J.D., Garcia-Segura, S., Apul, O.G. Effect of air nanobubbles on oxygen transfer, oxygen uptake and diversity of aerobic microbial consortium in activated sludge reactors, AEESP Research and Education Conference, June 2022 (Oral Presentation).
  23. Perreault, F., Bhagat, K., Apul, O.G., Oswald, J. Weathering of microplastics in the environment affects their adsorption affinity for organic contaminants, AEESP Research and Education Conference, June 2022 (Oral Presentation).
  24. Liggiero, J., Bailey, T., Hatinoglu, M.D., Ross, L., Apul, O.G. Identifying the Magnitude and Character of Microplastic Pollution in Frenchman Bay, Maine. UMaine Student Symposium, April 2022 (Poster Presentation).
  25. Doherty, Z.E., Yaparatne, S., Bouchard, D., Apul, O.G. Taste and Odor Degradation in Water by Nanobubble-Facilitated Ultrasonication. University of Maine Student Symposium, April 2022 (Poster Presentation).
  26. Liggiero, J., Bailey, T., Hatinoglu, M.D., Ross, L., Apul, O.G. Identifying the Magnitude and Character of Microplastic Pollution in Frenchman Bay, Maine. University of Maine Student Symposium, April 2022 (Poster Presentation).
  27. Hatinoglu, M.D., Apul, O. Predictive Statistical Model Development for Adsorption of Forever Chemicals (PFAS) by Microplastics. 2022 Maine Sustainability & Water Conference, March 2022 (Poster Presentation, Honorary Mention Winner).
  28. Moavenzadeh-Ghaznavi, S., Apul, O.G. Partitioning of Per- and Polyfluoroalkyl Substances (PFAS) onto Landfill Geomembrane Liners: Are Landfills their Final Destination? 2022 Maine Sustainability & Water Conference, March 2022 (Poster Presentation).
  29. Sonmez Baghirzade, B., Biswas, P., Reuther, J., Apul, O.G. Adsorption Capacity Enhanced by Tuning Carbon Size of Superfine Powdered Activated Carbon Electrospun Fiber. 2021 Sustainable Nanotechnology Organization Conference, November 2021 (Oral Presentation).
  30. Bhagat, K., Apul, O.G., Perreault, F. Aging of microplastics increases its sorption affinity towards organic contaminants. 259th American Chemical society National Conference, August 2021 (Oral Presentation).
  31. Collins, A., Adams, A., Ateia, M., Perreault, F. Apul, O.G. Determination of organic matter leaching from microplastics during ultraviolet weathering conditions. 2021 ACS Colloid and Surface Science Symposium, June 2021 (Poster Presentation).
  32. Collins, A., Costigan, E., Bhagat, K., Oswald, J., Perreault, F. Apul, O.G. Adsorption of synthetic organic compounds by microplastics: A cacophonous literature. 2021 Maine Sustainability & Water Symposium (Virtual), March 2021 (Poster Presentation).
  33. Kopec, D., Apul, O.G., MacRae, J., Noblet, C., Peckenham, J. PFAS? Yes, PFAS – A Serious Problem in Need of a Sustainable Solution. Maine Sustainability & Water Symposium (Virtual), March 2021 (Oral Presentation).
  34. Apul, O.G., Sonmez, B., Zhang, Y., Reuther, J., Saleh, N. B., Venkatesan, A. Thermal Regeneration of Spent Granular Activated Carbon Presents an Opportunity to Break the Forever PFAS Cycle. Maine Sustainability & Water Symposium (Virtual), March 2021 (Oral Presentation)
  35. Sonmez, B., Zhang, Y., Reuther, J., Saleh, N. B., Venkatesan, A., Apul, O.G. Regeneration of Spent Granular Activated Carbon Presents an Opportunity to Break the Forever PFAS Cycle. SERDP & ESTCP (Virtual) Symposium, December 2020 (Poster Presentation)
  36. Reuther, J., Apul, O.G., Shahrokhinia, A., Sonmez, B. Towards Dynamic Nanosphere Networks (DNNs): A Novel Platform for Regenerable Water Treatment Systems. American Chemical Society National Meeting, Division of Environmental Chemistry, August 2020, Virtual Meeting (Oral Presentation).
  37. Sonmez, B., Wei, J., Wong, H.W., Apul, O.G. Breaking the Cycle of Forever Chemicals, Per- And Polyfluorinated Alkyl Substances (PFAS) in Water Treatment Systems. UMass Lowell Student Research & Community Engagement Symposium, April 2020, Lowell, MA (Poster Presentation).
  38. Bozkurt, Y., Lu, D., Zhang, X., Giles, R., Apul, O.G. Nano-enabled Pretreatment of Waste Activated Sludge prior to Anaerobic Digestion. Sustainable Nanotechnology Organization Conference, November 2019, San Diego, CA (Oral Presentation).
  39. Ashani, H., Apul, O.G. Removal of Perfluorinated Chemicals from an Arizona Groundwater Well by Various Adsorbents. American Water Works Association California-Nevada Section Annual Fall Conference, October 2019, San Diego, CA (Oral Presentation).
  40. Lafaille, R., Pruitt, E., Lewis, J., Bernier, R., Dahlen, P., Apul, O.G. Repeatable Use of Susceptors in Microwave Remediation of Petroleum Contaminated Soils. New England Graduate Student Water Symposium, September 2019, Amherst, MA (Poster Presentation).
  41. Rowles, S., Apul, O.G., Karanfil, T., Saleh, N. Transformation and Removal Efficacy of Common Cannabinoids in Engineered Aquatic Systems. American Chemical Society National Meeting, Cannabis Chemistry Subdivision, August 2019, San Diego, CA (Oral Presentation).
  42. Bozkurt, Y., Lafaille, R., Zhang, X., Yu, T., Giles, R., Apul, O.G. Nano-Enabled Pretreatment of Waste Activated Sludge Prior to Anaerobic Digestion. Gordon Research Conference: Environmental Nanotechnology, June 2019, Newry, ME (Poster Presentation). 
  43. Lafaille, R., Zhang, X., Giles, R., Apul, O.G. Nano-Enabled Microwave Pretreatment of Waste Activated Sludge. New England Graduate Student Water Symposium, September 2018, Amherst, MA (Poster Presentation).
  44. Egitto, J., Latayan, J., Pagsuyoin, S., Apul, O.G., Agar, E. Selective Bromide Removal from Surface Waters using Capacitive Deionization. New England Graduate Student Water Symposium, September 2018, Amherst, MA (Poster Presentation).
  45. Khalid, A., Karanfil, T., Pagsuyoin, S., Bello, D., Apul, O. Adsorption of Δ9-tetrahydrocannabinol by Carbon-based Adsorbents. American Chemical Society 256th National Meeting and Exhibition, August 2018, Boston, MA (Oral Presentation).
  46. Atkinson, A., Apul, O., Garcia-Segura, S., Westerhoff, P. Implementation of Nanobubble-Based Technologies in Water Treatment. American Chemical Society 256th National Meeting and Exhibition, August 2018, Boston, MA (Oral Presentation).
  47. Barrios, A., Kidd, J., Apul, O.G., Westerhoff, P., Perreault, F. Comparison of Graphene Oxide Impregnated with Ionic or Nano Silver for Bromide Removal from Surface Waters. American Chemical Society 256th National Meeting and Exhibition, August 2018, Boston, MA (Oral Presentation).
  48. Ashani, H., Khalid, A., Apul, O.G., Sinha, S., Westerhoff, P. Removal of Perfluorinated Chemicals (PFCs) from Arizona Groundwater by Carbonaceous Nanomaterials. Arizona Water 91st Annual Conference. May 2018. Phoenix, AZ (Oral Presentation).
  49. Dooley, K., Belanger, N., Gannon, O., Giles, R., Barrington, L., Apul, O.G. Sanitation Solutions for Housing Units of an Orphanage in Les Cayes, Haiti. University of Massachusetts Lowell, Student Symposium. May 2018. Lowell, MA (Poster Presentation).
  50. Khalid, A., Tian, Y., Ayres, C., Sabaraya, I.V., Pietari, J., Chowdhury, I., Saleh, N.B., Apul, O.G. Removal of Poly- and Per-fluoroalkyl Substances (PFAS) from Natural Waters. Cabot Corporation, Student Material Research Symposium. May 2018. Billerica, MA (Poster Presentation).
  51. Khalid, A., Rowles, L.S., Apul, O.G., Saleh, N. Readily Deployable Electrospun Polymer/Nanocomposite Cartridge for Lead Removal from Drinking Water Distribution Pipelines. University of Massachusetts Lowell, Francis College of Engineering Prototyping Competition. December 2017. Lowell, MA (Poster Presentation/Best Poster Acc. to Crowd Voting).
  52. Pruitt, E., Apul, O.G., Dahlen, P., Westerhoff, P., Kamath, R., Kong, K. Nano-augmented microwave irradiation of soils containing heavy and long-chain petroleum-hydrocarbons. Pan American Congress of Nanotechnology Fundamentals and Applications to Shape the Future. November 2017. Guaruja, SP, Brazil (Poster Presentation).
  53. Apul, O.G., Adsorption of synthetic organic compounds by carbon nanomaterials. Plastics Engineering Presentation at University of Massachusetts Lowell. December 2017. Lowell, MA (Oral Presentation).
  54. Apul, O.G., Innovations in Drinking Water Treatment Technologies: Nanoscale Solutions to Macroscale Problems. 2017-2018 Faculty Symposium at University of Massachusetts Lowell. November 2017. Lowell, MA (90-Second Flash Oral Presentation).
  55. Apul, O.G., Innovations in Drinking Water Treatment Technologies. Industry Advisory Board Meeting, September 2017. Lowell, MA (Short Introductory Oral Presentation).
  56. Apul, O.G., Delgado, A., Miranda, E., Krajmalnik-Brown, R., Westerhoff, P., Sihota, N, Kamath, R., Sra,K., McMillen, S. Enhancing the biodegradation of heavy-hydrocarbons in soil. Chevron Mid-Year Meeting, August 2017, Project Meeting, Houston, TX (Oral Presentation).
  57. Pruitt, E., Apul, O.G., Dahlen, P., Westerhoff, P., Kamath, R., Kong, K. Additive augmented, ex-situ microwave treatment for remediation of soils containing heavy hydrocarbons. Chevron Mid-Year Meeting, August 2017, Project Meeting, Houston, TX (Oral Presentation).
  58. Kidd, J., Barrios, A., Apul, O.G., Perreault, F., Westerhoff, P. Silver impregnated graphene oxide removes bromide from surface waters. Gordon Research Conference (GRC) on Environmental Nanotechnology. June 2017. Stowe, VT (Poster Presentation & Oral Presentation in Gordon Research Seminar Series).
  59. Barrios, A.C., Kidd, J., Apul, O.G., Westerhoff, P., and Perreault, F. Silver impregnated graphene oxide for bromide removal from surface water: ionic silver versus nano-silver. Gordon Research Conference (GRC) on Environmental Nanotechnology. June 2017. Stowe, VT (Poster Presentation).
  60. Linard, E., Apul, O.G., Karanfil, T., van den Hurk, P., Klaine, S. Application of a bioavailability index to assess fish exposure to carbon nanomaterial-adsorbed PAHs. Gordon Research Conference (GRC) on Environmental Nanotechnology. June 2017. Stowe, VT (Poster Presentation).
  61. Delgado, A.G., Apul, O.G., Chen, T., Yavuz, B.M., Rittmann, B.E., Westerhoff, P., Krajmalnik-Brown, R. Lifting the weight off crude oils: Potentials and limitations of combined chemical oxidation and biodegradation. Association of Environmental Engineering and Science Professors (AEESP) Research and Education Conference, June 2017, Ann Arbor, MI (Poster Presentation).
  62. Barrios, A.C., Kidd, J., Apul, O.G., Westerhoff, P., and Perreault, F. Silver impregnated graphene oxide for bromide removal from surface water: ionic silver versus nano-silver. May 2017. Arizona Water 90th Annual Conference. Phoenix, AZ (Oral Presentation).
  63. Barrios, A.C., Kidd, J., Apul, O.G., Westerhoff, P., and Perreault, F. Silver impregnated graphene oxide for bromide removal from surface water: ionic silver versus nano-silver. May 2017. Houston, TX, NEWT 2nd Annual Site Visit. Houston, TX (Poster Presentation).
  64. Apul, O.G., Nano-Environment Interconnections: Applications and Implications of Nano in Natural and Built Environments. October 2016, Translating Graduate Nano-Experience to an Academic Career: Integrating Social Aspects in Engineering Education through Active Learning Workshop. Austin TX (Flash Oral Presentation).
  65. Apul, O.G., von Reitzenstein, N.H., Ladner, D., Hristovski, K., Westerhoff, P. Development of Novel Non-Woven Fabrics by co-Spinning of Superfine Powdered Activated Carbon and Polystyrene. American Chemical Society (ACS) National Meeting and Exhibition, August 2016, Philadelphia, PA (Oral Presentation).
  66. Apul, O.G., Alam, F., Mouti, A., Arrowsmith, S., Dahlen, P., Delgado, P., Westerhoff, P., Krajmalnik-Brown, R., Kamath, R. and McMillen, S. Enhancing the Biodegradation of Heavy Hydrocarbons in Soil. Chevron Mid-Year Meeting, August 2016, Project Meeting at Rice University, Houston, TX.
  67. von Reitzenstein, N.H., Apul, O.G., Hristovski, K., Westerhoff, P. Engineering Polymer-Supported Nanomaterial Networks for Water Treatment via Electrospinning. AZ Water 89th Annual Conference, May 2016, Tempe, AZ (Oral Presentation).
  68. Apul, O.G., Westerhoff, P. and Sihota, N. Heavy Hydrocarbon Soil Remediation Group: Summary of Results for Surf-Ox Team. Chevron End-of-Year Meeting, November 2015, Project Meeting at Arizona State University, Tempe, AZ.
  69. Apul, O.G., Westerhoff, P., Sihota, N. and Zuo, Y. Evaluation of oxidant/surfactant/solvent cocktails for washing soils containing heavy hydrocarbons. Excavation and off-site management. Chevron Mid-Year Technology Deployment Meeting, May 2015, Miami, FL.
  70. Fischer, N., Apul, O.G., Hristovski, Westerhoff, P. and Nowack, K. In situ regeneration of granular activated carbon saturated with natural organic matter and micropollutants. American Water Works Association (AWWA) Water Quality Technology Conference (WQTC), November 2015, Salt Lake City, UT (Poster Presentation).
  71. Kidd, J.M., Apul, O.G., Hanigan, D., Hristovski, K. Reed, R., Herckes, P. and Westerhoff, P. Comparison of the material properties of eight unique nanoparticles using nano-metrological functional assays. Fourth Annual Conference, Sustainable Nanotechnology Organization, November 2015, Portland, OR (Poster Presentation).
  72. Partlan, E., Davis, K., Ren, Y., Apul, O.G., Mefford, O.T., Karanfil, T. and Ladner, D.A. Effects of Bead Milling on Activated Carbon Characteristics: Trends in Superfine PAC. American Water Works Association (AWWA) Water Quality Technology Conference (WQTC), November 2015, Salt Lake City, UT (Oral Presentation).
  73. Delgado, A.G., Kamath, R., Apul, O.G., Chen, T., Rittmann, B., Westerhoff, B. and Krajmalnik-Brown, R. Chemical oxidants application for remediation of petroleum hydrocarbons. LAPI-ITB Workshop, August 2015, Bandung, West Java, Indonesia (Oral Presentation).
  74. Delgado, A.G., Kamath, R., Apul, O.G., Westerhoff, B. and Krajmalnik-Brown, R. Surfactant-enhanced remediation of petroleum hydrocarbons. LAPI-ITB Workshop, August 2015, Bandung, West Java, Indonesia (Oral Presentation).
  75. Westerhoff, P., Apul, O.G. and Sihota, N. Evaluation of oxidant/surfactant/solvent cocktails for washing soils containing heavy hydrocarbons. Chevron Annual Meeting, January 2015, San Ramon, CA (Oral Presentation).
  76. Partlan E., Ren, Y., Apul, O.G., Karanfil, T., and Ladner, D.A. Variations of superfine activated carbon produced by bead milling for trace organic contaminant adsorption, American Water Works Association (AWWA) Water Quality Technology Conference (WQTC), November 2014, New Orleans, LA (Poster presentation).
  77. Apul, O.G., Zhou, Y. and Karanfil, T. Adsorption of halogenated aliphatic contaminants by graphene nanosheets. American Chemical Society (ACS) National Meeting and Exhibition, August 2014, San Francisco, CA (Oral Presentation).
  78. Apul, O.G. and Karanfil, T. Adsorption of synthetic organic contaminants by carbonaceous nanomaterials. Association of Environmental Engineering and Science Professors (AEESP) 50th Anniversary Conference, July 2013, Golden, CO (Poster Presentation).
  79. Apul, O.G. and Karanfil, T. Evaluation of carbonaceous nanoadsorbents for adsorption of synthetic organic contaminants. Gordon Research Conference: Environmental Nanotechnology, June 2013, Stowe, VT (Poster Presentation).
  80. Apul, O.G. and Karanfil, T. Evaluation of alternative carbon adsorbents for water treatment: A comparison of activated carbon, carbon nanotubes and graphene nanosheets. 23rd Annual South Carolina Environmental Conference, March 2013, Myrtle Beach, SC (Poster Presentation).
  81. Apul, O.G. and Karanfil, T. Quantitative structure-adsorbability relationships for the adsorption of organic chemicals by carbon nanotubes. NSF Nanoscale Science and Engineering Grantees Conference, December 2012. Arlington, VA (Poster Presentation).
  82. Apul, O.G. and Karanfil, T. Predictive model development for adsorption of synthetic organic contaminants by carbon nanotubes. American Water Works Association Annual Conference, June 2012, Dallas, TX (Oral Presentation).
  83. Apul, O.G., Rieck, J.R. and Karanfil, T. QSAR & LSER model development for adsorption of organic contaminants by carbon nanotubes. 243rd Annual American Chemical Society Meeting & Expo, March 2012, San Diego, CA (Poster Presentation).
  84. Wang, Q., Apul, O.G., Xuan, P., Luo, F., Rieck, J.R. and Karanfil, T. Statistical analysis in 3D QSPR model development for organic compounds adsorption onto CNTs. 243rd Annual American Chemical Society Meeting & Expo, March 2012, San Diego, CA (Poster Presentation).
  85. Apul, O.G., Rieck, J.R. and Karanfil T. A predictive model development for adsorption of organic contaminants by carbon nanotubes. Symposium/Workshop: Carbons for Energy Applications, March 2012, Stone Mountain, GA (Poster Presentation).
  86. Apul, O.G., Rieck, J.R. and Karanfil T. Treating drinking water with carbon nanotubes: comparison of two modeling approaches. 22nd Annual South Carolina Environmental Conference, March 2012, Myrtle Beach, SC (Poster Presentation).
  87. Apul, O.G., Rieck, J.R. and Karanfil T. Adsorption of organic contaminants by carbon nanotubes. 21st Annual South Carolina Environmental Conference, March 2011, Myrtle Beach, SC (Poster Presentation).
  88. Zorba G.T., Atalar I., Apul O.G. and Sanin F. D. Enhancement of sludge reduction and methane production rates using different pretreatment methods applied prior to small scale laboratory anaerobic digesters. WEF Conference Residuals and Biosolids. May 2010, Savannah, GA (Poster Presentation).
  89. Apul O.G. and Sanin F.D. Examination of sludge minimization potential and associated costs by ultrasonic pretreatment. 8th National Environmental Engineering Congress. November 2009, Antalya, Turkey (Oral Presentation).
  90. Apul O. G., Dogan I. and Sanin F. D. Can capillary suction time be an indicator for sludge disintegration? IWA Specialist Conference Sustainable Management of Water and Wastewater Sludges. August 2009, Harbin, China (Oral Presentation).
  91. Apul, O.G. and Sanin, F.D. Minimization of sludge by ultrasonic pretreatment. 6th Symposium of Environmental Pollution Priorities in Turkey. May 2009, Gebze, Turkey (Oral Presentation).
  92. Koksoy G.T., Dogan I., Apul O.G. and Sanin F. D. Effect of digester F/M ratio on gas production of ultrasonically treated sludge. International Water Association (IWA) World Water Congress and Exhibition. September 2008, Vienna, Austria (Oral Presentation).
  93. Apul O.G., Doğan I., Köksoy G.T. and Sanin F.D. Effects of chemical and thermo-chemical pretreatment methods of sludge on anaerobic digestion. 7th National Environmental Engineering Congress. October 2007, Izmir, Turkey (Oral Presentation).

Patents

Patent Application:

O.G. Apul, P. Westerhoff, P. Dahlen, 2018. (Provisionally filed US patent application). Nano-augmented Microwave Pretreatment of Sewage Sludge Prior to Anaerobic Digestion in Wastewater Treatment Plants

P. Westerhoff, P. Dahlen, O. G. Apul, 2016. (US Patent 10,427,194). Microwave-Enabled Thermal Remediation of Organic Chemical Contaminated Soils using Dielectric Nanomaterials as Additives.

F.Perrault, P. Westerhoff, O.G. Apul, S. Sinha, 2017. (Provisionally filed US patent application). Silver-Impregnated Two-Dimensional Structures for Bromide Removal.

P. Westerhoff, S. Sinha, O.G. Apul, F, Perreault, 2017 (Provisionally filed US patent application, no:62/515,660). Halide Removal from Water using Silver Salts and Coagulants.