Advanced Water and Wastewater Treatment

Depleted traditional water supplies, increased regulations, contaminated sources, and the desire for more robust water and wastewater treatment create a foundation for the implementation of advanced treatment technologies. Advanced treatment facilities include micro-, nano-, or ultrafiltration, reverse osmosis, advanced oxidation, electrodialysis reversal, ion exchange, nutrient removal, and wastewater reuse facilities. The advances in treatment facilities provide the opportunity for technology implementations with critical considerations of capital cost, O&M cost, operability, regulatory requirements, reliability, and efficiency.

Some of our main focuses include:

  • Advanced oxidation using Fenton oxidation for textile dye wastewater treatment
  • Removal of Phthalates from wastewater using photocatalysis and adsorption processes
  • Removal of Glyphosate present in potable water using advanced oxidation methods
  • Removal of Phthalates from wastewater using modified fly-ash
  • Defluoridation of Potable water in CKDu prevalent areas of Sri Lanka by Functionalized Modified-Fly ash
  • Defluoridation of potable water in the presence of hardness in CKDu prevalent areas of Sri Lanka by Functionalized modified fly ash using iron oxides
  • Removal of Nitrate from potable water using modified nano zero-valent iron
  • Faecal Decontamination of Potable Water using Silver Oxide Nanoparticles
  • Removal of COD from textile dye wastewater using TiO2-based reactive media
  • Developing an effective, high-performance water purification system for CKDu affected households for removal of heavy metals and pesticides
  • Use of Reverse Osmosis reject water for value addition
  • Removal of Bisphenols in Water sources contaminated with leachate from open dumps of Municipal Solid Waste using Nanomaterial-incorporated framework

Publications

  • Kodikara, J., Gunawardana, B., Jayaweera, M., Sudasinghe, M., & Manatunge, J. (2020). Nitrate removal in potable groundwater by nano zerovalent iron under oxic conditions. Water Practice and Technology, 15(4), 1126-1143.
  • Gunawardana, B., Singhal, N., & Swedlund, P. J. (2020). Chlorophenols Dechlorination Water Treatment Using Ni-Iron Bimetallic Systems: Implications of the Degree of Chlorination, Nickel Coating, and Iron Oxide Phases. In Contaminants in Drinking and Wastewater Sources, 271-294.
  • Jayaweera, M., Karunathilaka, H. P. I. D., Danushika, U. A. A. G., Bandara, N. J. G. J., Gunawardana, B., & Manatunge, J.  (2019). Use of Modified Coal-derived Fly Ash for di-(2-ethylhexyl) phthalate removal from wastewater, IWA Water and Development Congress & Exhibition, 2019, Colombo, Sri Lanka.
  • Sudasinghe, M., Jayaweera, M., Gunawardana, B., Manatunge, J., & Madhusanka, G. (2019). Defluoridation of calcium-rich groundwater using iron oxide nanoparticles. Water Practice & Technology, 14(3), 665-681.
  • Danushika, G., Jayaweera, M., Bandara, N., Manathunge, J., & Gunawardena, B. (2019). Use of Ultra-Violet assisted Titanium Dioxide Photocatalysis for the Removal of Di (2-ethylhexyl) Phthalate from Industrial Wastewaters. In Moratuwa Engineering Research Conference (MERCon), 320-324.
  • Jayaweera, M., Sudasinghe, M., Gunawardana, B., Peiris, A., & Manatunge, J. (2019). Use of CaO Loaded Mesoporous Alumina for Defluoridation of Potable Groundwater Containing Elevated Calcium Levels. Environments, 6(6), 66.
  • Sudasinghe, M. I., Gunawardana, W. B., Jayaweera, M. W., Ranasinghe, R. A. T. N., & Dulshan, S. Y. S. (2019). Removal of Nephrotoxic Constituents in CKDu prevalent Areas, Sri Lanka: Are these Viable Options?. ENGINEER, 52(01), 11-20.
  • Gunawardana, B., Swedlund, P. J., & Singhal, N. (2019). Effect of O2, Ni0 coatings, and iron oxide phases on pentachlorophenol dechlorination by zero-valent iron. Environmental Science and Pollution Research, 26(27), 27687-27698.
  • Shams, D. F., Islam, S., Shi, B., Khan, W., Gunawardana, B., Saad, M., Qasim, M., Javed, H. A., Afridi, S. G., Naeem, M., & Khan, G. S. (2019). Characteristics of pipe corrosion scales in untreated water distribution system and effect on water quality in Peshawar, Pakistan. Environmental Science and Pollution Research, 26(6), 5794-5803.
  • Galagedara, Y. R., Perera, M. G. N., Ren, Y., Jayaweera, M., Zhao, Y., & Weerasooriya, R. (2018). Development of sulfonated graphene oxide polyamide thin-film composite membranes for forward osmosis. Desalination and water treatment, 136, 111-119.
  • Perera, M. G. N., Galagedara, Y. R., Ren, Y., Jayaweera, M., Zhao, Y., & Weerasooriya, R. (2018). Fabrication of fullerenol-incorporated thin-film nanocomposite forward osmosis membranes for improved desalination performances. Journal of Polymer Research, 25(9), 199.
  • Gunawardana, B., Swedlund, P. J., Singhal, N., & Nieuwoudt, M. K. (2018). Pentachlorophenol dechlorination with zero valent iron: a Raman and GCMS study of the complex role of surficial iron oxides. Environmental Science and Pollution Research, 25(18), 17797-17806.
  • Sudasinghe, M. I., Jayaweera, M. W., Manatunge, J.  M.  A., Gunawardana, W.  B. & Indrachapa, K. G. L. (2018). Faecal Decontamination of Potable Water using Silver Oxide Nanoparticles, ACEPS-2018, 6th International Symposium on Advances in Civil and Environmental Engineering Practices for sustainable development, Faculty of Engineering, University of Ruhuna, Sri Lanka.
  • Jayasekara, P.P., Gunarathna, S., Gunawardana, B., Jayaweera, M., Manatunge, J. & Zoysa, K.  (2017). Use of Ozonation for Degradation of Glyphosate in Potable water of CKDu prevalent areas, Proceedings of the KDU-IRC: International Research Conference, Kotelawala Defence University, Sri Lanka.
  • Jayasekara, P.P., Gunarathna, S., Gunawardana, B., Jayaweera, M., Manatunge, J. & Zoysa, K. (2017).  Use of Photocatalysis for Degradation of Glyphosate in potable water of CKDu prevalent areas, Proceedings of 22nd International Forestry and Environment Symposium, University of Sri Jayewardenepura, Sri Lanka
  • Gunawardana, B., Singhal, N., & Swedlund, P. (2011). Degradation of chlorinated phenols by zero valent iron and bimetals of iron: A review. Environmental Engineering Research, 16(4), 187-203.
  • Gunawardana, B., Singhal, N., & Johnson, A. (2011). Effects of amendments on copper, cadmium, and lead phytoextraction by Lolium perenne from multiple-metal contaminated solution. International journal of phytoremediation, 13(3), 215-232.
  • Gunawardana, B., Singhal, N., & Johnson, A. (2010). Amendments and their combined application for enhanced copper, cadmium, lead uptake by Lolium perenne. Plant and soil, 329(1-2), 283-294.
  • Johnson, A., Gunawardana, B., & Singhal, N. (2009). Amendments for enhancing copper uptake by Brassica juncea and Lolium perenne from solution. International Journal of Phytoremediation, 11(3), 215-234.

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