• Membrane Hybrid System for Sustainable Removal of Organic Micropollutants and Biofoulants from Reverse-Osmosis Concentrate 

  Devaisy, S.; Jeong, S.; Kandasamy, J.; Nguyen, T.V.; Ratnaweera, H.; Vigneswaran, S. (American Society of Civil Engineers (ASCE), 2024-07-29)

  This forum paper explores the performance and potential applications of the submerged membrane hybrid system (SMHS) integrated with adsorption and ion exchange resins in the removal of organic micropollutants (OMPs) from ...
• Application of Low-Pressure Nanofiltration Membranes NF90 and NTR-729HF for Treating Diverse Wastewater Streams for Irrigation Use 

  Fonseka, C.; Ryu, S.; Devaisy, S.; Kandasamy, J.; McLod, L.; Ratnaweera, H.; Vigneswaran, S. (MDPI, 2024-07-11)

  The application of low-pressure nanofiltration (NF) was investigated for three different applications: water reuse from acid mine drainage (AMD), surface water containing natural organic matter (NOM) and agricultural reuse ...
• Study on isolation of potentially probiotic Lactobacillus species from fermented rice 

  Jeyagowri, N.; Parahitiyawa, N.; Jeyatilake, S.; Ranadheera, S.; Madhujith, T. (Postgraduate Institute of Agricluture (PGIA), 2015-11-20)

  Traditional fermented food products such as fermented rice are known to possess probiotic potential. Probiotics are live microorganisms that provide a myriad of health benefits. Despite the associated health benefits, ...
• Production, purification and characterization of Bacillus sp. GRE7 xylanase and its application in eucalyptus Kraft pulp biobleaching 

  Jeyagowri, K.; Anceno, A.J.; Haki, G.D.; Rakshit, S.K. (Springer Netherlands, 2007-08-16)

  Abstract Production of extracellular xylanase from Bacillus sp. GRE7 using a bench-top bioreactor and solidstate fermentation (SSF) was attempted. SSF using wheat bran as substrate and submerged cultivation using oat-spelt ...
• Mangifera indica leaves as a biosorbent to treat municipal wastewater in Vavuniya District 

  Rishaya, N.M.; Devaisy, S. (Faculty of Applied Science, 2023-10-25)

  The rapid urbanization in Vavuniya town resulted in high volumes of urban drainage which collectively entered into Vavuniya tank located in the heart of Vavuniya town area. The existing treatment system for urban ...
• BIOCHAR-MEDIATED REMEDIATION OF POLYCYCLIC AROMATIC HYDROCARBONS IN WASHING EFFLUENT FROM AUTOMOBILE SERVICE STATION SOIL 

  Gunarathna, H.M.D.S.; Pallewatta, S.; Devaisy, S.; Rajapaksha, A.U.; Vithanage, M.S. (National Science and Technology Commission, 2024-01-26)

  Petroleum hydrocarbon contamination resulting from human activities including spills, industrial manufacturing, and fossil fuel disposal is a global environmental issue. Considering the contamination of soils by petroleum ...
• Removal of Water Hardness from groundwater using Lemon peel derived biochar 

  Hafsa, H.N.F.; Devaisy, S. (Faculty of Applied Science, 2023-10-25)

  Water hardness is the amount of dissolved calcium and magnesium ions in the water. Problems with hardwater include toughening of skin and hair, spots on sinks and clothes, scaling in boilers, washing machines, and ...
• Treatment of Coir mill wastewater using activated charcoal 

  Amarasuriya, A.P.S.; Karunarathne, D.; Devaisy, S. (Faculty of Applied Science, 2023-10-25)

  The coir mill industry plays a significant role in the national economy, but its wastewater poses a substantial environmental challenge due to its high electrical conduc- tivity (EC), high chemical oxygen demand (COD) ...
• Rice husk charcoal waste to treat the wastewater discharged by Rubber reclamation industry 

  Thilanka, C.; Devaisy, S. (Faculty of Applied Science, 2023-10-25)

  This study addresses the substantial environmental challenges associated with the rubber reclamation process, characterized by the generation of two prominent waste streams: wastewater and waste burnt rice husk, termed ...
• Dual Membrane - Adsorption Hybrid System as a Sustainable Water Reuse System 

  Devaisy, S.; Vigneswaran, S. (Faculty of Technology, Eastern University, Sri Lanka, 2023-09-27)

  Dual membrane hybrid systems are becoming emergent in the production of high-quality reclaimed water for reusable purpose where microfiltration (MF) followed by Reverse Osmosis (RO) is commonly used worldwide. However, ...
• Eichhornia crassipes Leaves as a Waste-derived Bio-Sorbent to Remove Organics and Nutrients from Rice Mill Wastewater 

  Farwin, A.F.S.; Pratheepkumar, M.; Devaisy, S. (Department of Forestry and Environmental Science University of Sri Jayewardenepura, 2023-01-28)

  The increased rate of population growth resulted in the increased number of rice mill industries to fulfill the demand for rice. The rice mill wastewater contains a high load of organics and nutrients. Therefore, the direct ...
• Treatment of Aquaculture Effluent through Combined Phytoremediation and Biosorption Techniques 

  Rasanga, K.L.D.C.; Devaisy, S. (General Sir John Kotelawala Defence University, 2022-09-29)

  Aquaculture has significant effects on the environment, the discharge of aquaculture wastewater without treatment causes several environmental impacts such as destruction of natural habitats, reduction in the abundance and ...
• Treating rice mill effluent using waste rice hull 

  Uduwarage, U.D.T.M.; Devaisy, S. (South Eastern University of Sri Lanka, 2021-11-30)

  In Sri Lanka, about 95% of the population consume rice as their staple food. The increase of the population leads to an increment of the number of rice mills to meet the demand. This resulted in the generation of huge ...
• Membranes in Water Reclamation: Treatment, Reuse and Concentrate Management 

  Devaisy, S.; Kandasamy, J.; Nguyen, T.V.; Ratnaweera, H.; Vigneswaran, S. (MDPI, 2023-06-15)

  In this article, an extensive examination is provided on the possible uses of membranes and hybrid processes in wastewater treatment. While membrane technologies face certain constraints, such as membrane fouling and ...
• Removal of Organics with Ion-Exchange Resins (IEX) from Reverse Osmosis Concentrate 

  Devaisy, S.; Kandasamy, J.; Aryal, R.; Johir, M.A.H.; Ratnaweera, H.; Vigneswaran, S. (MDPI, 2023-01-20)

  Reverse osmosis concentrate (ROC) produced as the by-product of the reverse osmosis process consists of a high load of organics (macro and micro) that potentially cause eco-toxicological effects in the environment. Previous ...
• Comparison of Membrane-Based Treatment Methods for the Removal of Micro-Pollutants from Reclaimed Water 

  Devaisy, S.; Kandasamy, J.; Nguyen, T.V.; Johir, M.A.H.; Ratnaweera, H.; Vigneswaran, S. (MDPI, 2022-11-16)

  Dual membrane hybrid systems generally produce reclaimed water for non-potable uses by blending microfiltered biologically treated sewage effluent (BTSE) and reverse osmosis (RO) permeate. This reclaimed water is found to ...
• A study of the correlation between local meteorology and atmospheric particulate matter in Kandy and Battaramulla in Sri Lanka 

  Batuwita, P.M.; Ranawaka Arachchi, R.A.W.; Santhiyago, P.U.; Jayasundara, J.J.M.A.D.; Naveendrakumar, G. (Faculty of Science University of Kelaniya Sri Lanka., 2023-12-10)

  Air pollution due to particulate matter (PM) remains a significant environmental concern, especially in urban areas. This study examines the relationship between PM concentrations and meteorological parameters of two ...
• Historical trends in averages and extremes of rainfall, temperature and runoff of Sri Lanka 

  Naveendrakumar, G.; Pathmarajah, S.; Meththika, V.; Jayantha, O.; Iqbal, M.C.M. (National Research Council 120/7, Vidya Mawatha, Colombo 07, Sri Lanka., 2023-12-11)

  Historical trend assessment is an essential part of the climate change investigation efforts. Due to several reasons, including regional climatic fluctuations, Sri Lanka is likely to have a feedback effect on the local ...
• Chemical characteristics of bulk deposition in Sinharaja and Mattakkuliya, Sri Lanka 

  Wijerathna, A.I.S.S.; Naveendrakumar, G.; Amarathunga, A.A.D.; Pemarathne, S.K.S. (Young Scientists’ Association (NIFS-YSA), National Institute of Fundamental Studies, Hanthana Road, Kandy, Sri Lanka., 2023-09-23)

  The chemical characteristics of bulk deposition vary with climatic seasons. This study aimed to investigate the chemical characteristics of bulk deposition in Sinharaja, a rainforest site, and Mattakkuliya, an urbanized ...
• Diurnal and seasonal variations of ground-level ozone and nitrogen dioxide in Battaramulla and Kandy, Sri Lanka 

  Batuwita, P.M.; Ranawaka Arachchi, R.A.W.; Santhiyago, P.U.; Kalpage, L.U.; Jayasundara, J.J.M.A.D.; Naveendrakumar, G. (Young Scientists’ Association (NIFS-YSA), National Institute of Fundamental Studies, Hanthana Road, Kandy, Sri Lanka., 2023-09-23)

  This study examines the impact of solar radiation on ozone (O3) formation and nitrogen dioxide (NO2) depletion in Battaramulla and Kandy, Sri Lanka. Objectives include investigating diurnal and seasonal variations of solar ...

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