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Publications

Scholarly Articles

Graffam, M., Paulsen, R., Volkenborn, N., (2020). Hydro-biogeochemical Processes and Nitrogen Removal Potential of a Tidally Influenced Permeable Reactive Barrier Behind a Perforated Marine Bulkhead Ecological Engineering, 155, 105933.

Graffam, M., Polerecky, L., Volkenborn, N. (2020).  Hydrobiogeochemical Function of Soil Based Onsite Wastewater Treatment Systems: Insights from High-Resolution O 2 Imaging. Journal of Sustainable Water in the Built Environment, 6, 2.

Langlois, K., Gobler, C., Walker, H., Collier, J. (2020). Microbial Communities in Partially and Fully Treated Effluent of Three Nitrogen-Removing Biofilters.  Journal of Sustainable Water in the Built Environment, 6, 2.

Lee, C.-S., Venkatesan, A.K., Walker, H.W. and Gobler, C.J., (2020). Impact of groundwater quality and associated byproduct formation during UV/hydrogen peroxide treatment of 1,4-dioxane Water Research, 173 , 115534.X

Mao, X., Myavagh, P., Lotfikatouli, S., Hsiao, B., Walker, H. (2020).  Membrane Bioreactors for Nitrogen Removal from Wastewater: A Review Journal of Environmental Engineering  , 146, 5.

Tomasetti, S., Gobler, C., (2020). Dissolved oxygen and pH criteria leave fiseries at riskScience, 368, 6489, pp. 372-373.

Waugh, S., Mao, X., Heufelder, G., Walker, H., Gobler, C. (2020). Nitrogen Transformations and Microbial Characterization of Soils from Passive Nitrogen Removing Biofilters.   Journal of Sustainable Water in the Built Environment, 6, 2.

Wehrmann, L., Lee, J., Price, R., Heufelder, G., Walker, H., Gobler, C. (2020).  Biogeochemical Sequestration of Phorphorus in a Two-Layer Lignocellulose-Based Soil Treatment System. Journal of Sustainable Water in the Built Environment, 6, 2.


Dognani, G., Hadi, P., Ma, H., Cabrera, F., Job, A., Agostini, D., Hsiao, B. (2019). Effective chromium removal from water by polyaniline-coated electrospun adsorbent membrane . Chemical Engineering Journal, 372, pp. 341-351.

Hadi, P., Yang, M., Ma, H., Huang, X., Walker, H., Hsiao, B. (2019). Biofouling-resistant nanocellulose layer in hierarchical polymeric membranes: Synthesis, characterization and performance . Journal of Membrane Science, 579, 162-171.

Li, N., Zheng, J., Hadi, P., Yang, M., Huang, X., Ma, H., Walker, H., Hsiao B. (2019). Synthesis and characterization of a high flux nanocellulose-cellulose acetate nanocomposite membrane . Membranes, 9, 70.

Maleki Shahraki, Z., Mao, X., Waugh, S., Lotfikatouli, S., Walker, H., Gobler, C., Wanlass, J. (2019). Potential release of legacy nitrogen from soil surrounding onsite wastewater leaching pools.   Water Research, 169.


Waugh S., Mao, X., Walker, H., Gobler, C. (2018). Characterizing nitrogen transformation processes in nitrogen removing biofilters for onsite wastewater treatment. Proceedings of Water Environment Federation Nutrient Removal and Recovery Conference , Rayleigh, NC.


Presentations/Posters

Graffam, M., Roberts, S. (2018). Permeable reactive barriers and constructed wetlands to remediate contaminated waters. Presented at “Water We Going To Do?” Conference, Hauppauge, NY.

Langlois , K., Collier, J. (2020).   Best practices for opening  the microbial “black-box” of nitrogen-removing biofilters (NRBs), an alternative on-site wastewater treatment system . “Protecting Public Health and the Environment", NYWEA Spring Technical Meeting and Exhibition, (oral presentation, virtual conference).

Lee, C., Venkatesan, A., Walker, H., Gobler, C. (2019) Impact of groundwater quality parameters on 1,4-dioxane removal and associated byproducts formation during UV/hydrogen peroxide advanced oxidation process treatment . Presented at ACS Fall 2019 National Meeting & Exposition, San Diego, CA.

Lotfikatouli, S., Mao, X., Gobler, C. and Walker, H.W. (2020). Efficient nitrogen removal from onsite wastewater in a sequencing batch reactor (SBR) without external carbon amendment.   “Protecting Public Health and the Environment",   NYWEA Spring Technical Meeting and Exhibition , (oral presentation, virtual conference).

Maleki Shahraki, Z., Zhao, Y., Mao, X., Orlov, A., Walker, H., Gobler, C. (2020) Biochar amendment effect in the nitrification and phosphorous removal of a nitrifying layer of nitrogen removing biofilters (NRB) . ACS Fall 2020 Virtual Meeting & Expo, (oral presentation, virtual conference. 

Maleki Shahraki, Z., Mao, X., Waugh, S., Walker, H., Russo, F., Gobler, C. (2019). Characterization of nitrogen transformation in the nitrification layer of both lab-scale and pilot-scale Nitrogen Removing Biofilters (NRB). Poster presented at 257th National Meeting and Exposition of the American Chemical Society - Chemistry for New Frontiers, New Orleans, LA.

Maleki Shahraki, S., Mao, X., Walker, H. (2018). Impact of legacy nitrogen in conventional septic system on nitrogen removal for onsite wastewater treatment. Poster presented at 255th National Meeting and Exposition of the American Chemical Society - Nexus of Food, Energy, and Water, New Orleans, LA.

Price, R., Smith, Z., Graffam, M., Heufelder, G., Nyer, S., Volkenborn, N., Walker, H., Wehrmann, L., and Gobler, C., (2019). Behavior of iron and other metals in a lignocellulose-based biofilter for onsite wastewater treatment: Implications for metals cycling in the LI Upper Glacial Aquifer. Presented at 26th Conference on Geology of Long Island and Metropolitan New York, Stony Brook, NY.

Roberts, S. (2018). The role of plants and the rhizosphere in mediating nitrogen transformations in constructed wetlands for wastewater remediation. Presented at NYWEA's 90th Annual Meeting & Exhibition, New York, NY. 

Russo, F. (2020).  Next Generation of Nitrogen Removing Biofilters and Article 19 Compliance.  “Protecting Public Health and the Environment",  NYWEA Spring Technical Meeting and Exhibition , (oral presentation, virtual conference).

Tang, Y., Lee, C. S., Venkatesan, A., Mao, X., Gobler, C., Walker, H. (2019). Evaluation of granular activated carbon performance to remove 1,4-dioxane degradation byproducts and residual H2O2 from UV/H2O2 treatment system. Poster presented at 257th American Chemistry Society National Meeting & Exposition, Orlando, FL.

Venkatesan, A.K. , Lee, C. S., Gobler, C. (2020).  Research at the NYS Center for Clean Water Technology to Mitigate 1,4-Dioxane Contamination in the Long Island Water Cycle . “Protecting Public Health and the Environment", NYWEA Spring Technical Meeting and Exhibition, (oral presentation, virtual conference).

Venkatesan, A.K., Tang, Y., Mao, X., Gobler, C., Walker, H. (2018). Laboratory and pilot-scale testing of alternative water treatment technologies for 1, 4-dioxane-contaminated groundwater in Long Island, NY . Presented at 256th ACS National Meeting, Boston, MA.

Venkatesan, A.K. (2018). Perfluorochemicals (PFCs): Background and available treatment technologies. Presented at Friends of Georgica Pond Foundation 2018 Annual Meeting, East Hampton, NY.

Venkatesan, A. K. (2017). Science Policy Forum: Long Island Drinking Water Panelist. Presented at Science Advocacy of Long Island, Stony Brook, NY.

Waugh, S., Mao, X. (2017). Non-proprietary technologies for nitrogen removal on Long Island. Presented at New England Estuarine Research Society.

Waugh, S. (2018). Characterizing nitrogen transformation processes in nitrogen removing biofilters for onsite wastewater treatment. Presented at Water Environment Federation Nutrient Removal and Recovery Conference, Rayleigh. NC.