A5085300111- Water Quality and Pollution Assessment
- Constructed Wetlands for Wastewater Treatment
- Water Treatment and Disinfection
- Groundwater and Isotope Geochemistry
- Wastewater Treatment and Reuse
- Membrane Separation Technologies
- Wastewater Treatment and Nitrogen Removal
- Agriculture, Water, and Health
- Water Systems and Optimization
- Heavy Metal Exposure and Toxicity
- Coastal wetland ecosystem dynamics
- Groundwater and Watershed Analysis
- Fluoride Effects and Removal
- Insect and Pesticide Research
- Child Nutrition and Water Access
- Mosquito-borne diseases and control
- Water-Energy-Food Nexus Studies
- Environmental remediation with nanomaterials
- Fecal contamination and water quality
- Mercury impact and mitigation studies
- Advanced Radiotherapy Techniques
- Coagulation and Flocculation Studies
- Microbial Fuel Cells and Bioremediation
- Fish Biology and Ecology Studies
- Water resources management and optimization
Ministry of Water Resources and Irrigation
2024
National Hospital of Sri Lanka
2011-2024
Ministry OF City Planning and Water Supply
2019-2024
University of Peradeniya
2022-2023
Water Technology (Australia)
2023
International Water Management Institute
2020
Saitama University
2009-2013
Asian Institute of Technology
2008
Chronic kidney disease of unknown etiology (CKDu) is spreading gradually in Sri Lanka. In the current research, 1,435 well water samples from all 25 districts Lanka, 91 rice samples, and 84 human urine both CKDu-endemic non-endemic areas Lanka were analyzed for arsenic, cadmium, lead, chromium to detect whether toxic elements could be a cause CKDu. The liver-type fatty acid binding protein (L-FABP) concentration concentrations determine relation L-FABP with chromium. High not detected areas....
This study investigated the water quality of groundwater that was collected from chronic kidney disease unknown etiology (CKDu) prevailing areas in dry zone Sri Lanka to assess its suitability for drinking purposes, and first time a Water Quality Index (WQI) with emphasis on proposing appropriate treatment method developed. A total 88 samples were (December 2016) wet (May 2017) seasons; high concentrations hardness, fluoride, salinity, dissolved organic carbon (DOC), general alkaline nature...
Drinking water is largely from groundwater in Sri Lanka, so quality management of great concern. In order to achieve the 6th goal United Nations (UN) Sustainable Development Goals (SDG), more efforts are being undertaken secure drinking quality. this paper, current status, challenges and opportunities improvement Lanka were reviewed discussed, based on previous studies. There Ca-HCO3 type, Ca–Mg-HCO3 type Na–SO4–Cl dominated wet zone, intermediate dry respectively. Elevated levels hardness,...
Abstract Neonicotinoids are systemic insecticides used since the 1990’s , that possess renal tubular toxicity. We conducted a field-based descriptive study in North Central Dry-zone of Sri Lanka, where chronic kidney disease (CKD) unknown etiology has been increasing 1990’s. To elucidate relationship between dysfunctions and urinary neonicotinoids concentrations, we collected spot urine samples from15 CKD patients, 15 family members, 62 neighbors 2015, analyzed two biomarkers, Cystatin-C...
Reverse osmosis (RO) drinking water stations have been introduced to provide safe for areas with prevailing chronic kidney disease unknown (CKDu) etiology in the dry zone of Sri Lanka. In this investigation, RO established by community-based organizations (CBO) North Central Province (NCP) were examined. Water samples collected from source, permeate, and concentrate each station determine quality performance. Furthermore, operators systems interviewed evaluate operational maintenance...
This study explores the effectiveness of an integrated anaerobic membrane bioreactor (AnMBR) coupled with anoxic/oxic (A/O MBR) for treatment natural rubber industry wastewater high sulfate, ammonia, and complex organic contents. was conducted at lab-scale over a duration 225 days to thoroughly investigate efficiency sustainability proposed method. With hydraulic retention time 6 total system, COD reductions were 98%, which reduced influent from 22,158 ± 2859 mg/L 118 74 effluent. The system...
A total of 1,304 well water samples from Sri Lanka were analyzed to assess the potential risk drinking human health. Fluoride concentration more than 1.0 mg/L was found in 20% wells, especially dry zone where CKDu is prevalent. a suspected cause region. Nitrate concentrations 50 recorded 2.2% wells areas with intense agricultural activity. Arsenic 10 µg/L 0.9% wells. Contaminated could pose
Installation of decentralized water-treatment plants is an ideal option to supply safe drinking water for rural communities. Presently in Sri Lanka, over 3.6 million villagers face acute water-quality problems, and chronic kidney disease unknown etiology (CKDu) also prevalent among this community. Most the these villages unpalatable due high hardness salinity. As interim measure, reverse-osmosis (RO) are introduced provide water. However, deficient electrolytes, RO-treated tastes unpleasant...
The efficiency of magnetic seed coagulation (MSC) with pH adjustment by NaOH and Ca(OH)2 as a pretreatment for high-strength natural rubber industrial wastewater (NRIWW) was compared in this study. high content suspended solids (SSs) other inhibitory substances NRIWW is primary issue which affects its subsequent secondary tertiary treatment processes. MSC process polyaluminum chloride (PAC), anionic polymer (polyacrylamide—PAM)), seeds (MS) (ferric oxide (Fe3O4)) proven to be cost-effective...
NA
Water pollution poses a significant and escalating threat to urban environments, particularly in the rapidly expanding cities of Asia. Addressing this challenge requires implementing cost-effective solutions, one such approach is deployment Nature-based Solutions (NbS) treat septic tank effluents, canals lakes. This study represents pivotal step direction by formulating comprehensive framework assess effectiveness impacts NbS. The research draws on six case studies spanning Philippines, Sri...
When humic substances (HS) are present in the feed water, fouling of ion-exchange membranes is inevitable despite built-in self-cleaning process electrodialysis reversal systems (EDR). Ca2+ HS can readily chelate with them and form organic-Ca2+ complexes, which foul anion exchange (AEMs) an irreversible manner. However, elucidation distinct processes between membrane scaling by HS-Ca2+ complexes debated. We examined AEM using synthetic groundwater. Well-characterized Sigma-Aldrich acid (HA)...
Groundwater is an important drinking water resource in the coastal regions of island countries and has suffered from heavy seawater intrusion. However, areas specifically affected by intrusion their groundwater hydrogeochemical compositions evolution processes remain unclear. This study analyzed compositions, quality, Mannar district, Sri Lanka, during dry season. A total 56 samples were collected shallow wells tube across region, about 64.28% had good quality (WQI < 100). Geochemical...