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Item Metadata only Assessing arsenic contamination awareness of groundwater dependent residents in the Hanoi area, Vietnam / Tran Trung Kien(Mahidol University. Mahidol University Library and Knowledge Center, 2008) Tran, Trung Kien, 1981; Ross, Williamarea and the risk is high because residents still use arsenic-contaminated water for their daily consumption with little or no treatment. This study aims to assess the level of awareness of Hanoi residents who are dependent on groundwater regarding...Various levels of arsenic have been found in the groundwater in the Hanoi area for the past ten years. In some areas, arsenic levels are far above the standard level for drinking water. There is a large scale threat of arsenic poisoning in the HanoiPublication Metadata only Effectiveness of different spatial interpolators in estimating heavy metal contamination in shallow groundwater: a case study of arsenic contamination in Hanoi, Vietnam(2011-04) Pham Quy Giang; Kanchana Nakhapakorn; กาญจนา นาคะภากร; Achara Ussawarujikulchai; Mahidol University. Faculty of Environment and Resource StudiesStarting from emerging issues of arsenic contamination of groundwater, this study was conducted in Thanh Tri, a sub-urban district in southeastern side of Hanoi, in order to: (1) archive comprehensive understandings of arsenic contamination... and the highest concentration was found in lower aquifer. IDW gave the best prediction with an average error (MAPE) of 32.82%. An arsenic risk map was created from the IDW method. The map showed groundwater arsenic contamination and high contaminated areasPublication Metadata only Contamination of nitrate in groundwater and its potential human health: a case study of lower Mae Klong river basin, Thailand(2015-08-25) Jaturong Wongsanit; Piyakarn Teartisup; Prapeut Kerdsueb; Prapin Tharnpoophasiam; Suwalee Worakhunpiset; Kasetsart University; Mahidol University© 2015, Springer-Verlag Berlin Heidelberg. Nitrate contamination in groundwater is a worldwide problem especially in agricultural countries. Environmental factors, such as land-use pattern, type of aquifer, and soil-drainage capacity, affect... the level of contamination. Exposure to high levels of nitrate in groundwater may contribute to adverse health effects among residents who use groundwater for consumption. This study aimed to determine the relationship between nitrate levels in groundwaterItem Metadata only Risk assessment of nitrate contamination in groundwater using geoinformatics(Mahidol University. Mahidol University Library and Knowledge Center, 2009) Jaturong Wongsanit; Suwalee WorakhunpisetPublication Metadata only Heavy metal contamination of surface water and groundwater from the waste electrical and electronic equipment (weee) recycling area in buriram, thailand(2020-01-01) Nathida Kongsricharoen; Jayrisa Champa; Navaporn Kanjanasiranont; Tassanee Prueksasit; Faculty of Environment and Resource Studies, Mahidol University; Chulalongkorn Universityconcentration around the WEEE dumping site, while the groundwater was slightly contaminated with Mn (0.020 mg/L) in the domestic water supply. In addition, the contamination of Cu and Pb found in DY-SW1 could be from WEEE. Although, the concentration of all... heavy metals under investigation were within the permissible levels. However, continual monitoring of the contaminated surface water and groundwater is necessary to prevent the dissemination of heavy metals.Item Metadata only Assessing Groundwater Resources Vulnerability with the New DRASTIC-LP: A Case Study in Chiang Mai Province, Thailand(2024-02-01) Imsamranrat C.; Leelasantitham A.; Imsamranrat C.; Mahidol University, and agricultural activities. These activities, in turn, directly contribute to environmental pollution, particularly in terms of the risk of groundwater contamination in Chiang Mai Province. This study aims to predict the future vulnerabilities of groundwater...)-related land-use pattern (L) that represents contamination impacts was considered an additional new DRASTIC parameter. The study’s findings reveal the high reliability and maximum effectiveness of the new DRASTIC-LP model in assessing groundwaterPublication Metadata only Detection of arsenite-oxidizing bacteria in groundwater with low arsenic concentration in Rayong province, Thailand(2018-08-14) Phurinat Pipattanajaroenkul; Prinpida Sonthiphand; Supeerapat Kraidech; Satika Boonkaewwan; Srilert Chotpantarat; Chulalongkorn University; Mahidol University© The Authors, published by EDP Sciences, 2018. As contamination in groundwater has become one of the global problems. It has been reported that million people around the world get adverse effects on their health by direct and indirect... As-contaminated groundwater consumption. In groundwater, the most abundant As species are arsenite (As3+) and arsenate (As5+). Arsenite is more toxic and mobile than arsenate. Consequently, arsenite oxidation is considered as an important process in groundwaterItem Metadata only Hydrogenotrophic denitrification for treatment of nitrate-contaminated groundwater: Using a microbubble diffuser to optimize performance(2023-10-01) Kamei T.; Tsutsumi Y.; Rujakom S.; Eamrat R.; Kazama F.; Mahidol UniversityNitrate nitrogen (NO3−-N) contamination of groundwater as a drinking water resource has been detected in many countries and poses a serious threat to human health. This study optimized the performance of a hydrogenotrophic denitrification (HD...) reactor for nitrate-contaminated groundwater treatment by introducing a microbubble diffuser (MD), and evaluated its performance stability. The HD reactor continuously maintained effluent NO3−-N and NO2−-N concentrations below the drinking water standardPublication Metadata only Mechanisms of arsenic contamination associated with hydrochemical characteristics in coastal alluvial aquifers using multivariate statistical technique and hydrogeochemical modeling: a case study in Rayong province, eastern Thailand(2020-01-01) Satika Boonkaewwan; Prinpida Sonthiphand; Srilert Chotpantarat; Chulalongkorn University; Mahidol University© 2020, Springer Nature B.V. Abstract: The rapid development of Rayong Province has resulted in increased demands on groundwater usage. This has potentially induced the release of contaminants such as arsenic (As), among others (i.e., NO3−, PO43... and intensive pumping may enhance the reducing environment, facilitating the release of As(III) into the groundwater. The knowledge gained from this study helps to better understand the mechanisms of As contamination in coastal groundwater aquifers, whichPublication Metadata only Reduction of DBP precursors and their THMFPs in leachate contaminated groundwater by PAC adsorption(2017-07-31) Kanlayanee Yimyam; Aunnop Wongrueng; Pharkphum Rakruam; Saoharit Nitayavardhana; Athit Phetrak; Suthida Theepharaksapan; Suraphong Wattanachira; Chiang Mai University; Mahidol University; Srinakharinwirot Universitycontaminated groundwater around an inactive open-dumping landfill was selected as the raw water. The PAC adsorption reaction was proven to be the pseudo second order kinetic reaction and the Freundlich isotherm. The dissolved organic carbon (DOC), dissolved