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Arsenic in the bengal delta plain: Geochemical complications and potential mitigation option
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2016 (English)In: Arsenic Research and Global Sustainability - Proceedings of the 6th International Congress on Arsenic in the Environment, AS 2016, CRC Press/Balkema , 2016, 47-49 p.Conference paper, Published paper (Refereed)
Abstract [en]

Groundwaters from the Bengal Delta Plain (BDP) are now significantly enriched with natural arsenic (As), frequently exceeding the WHO guideline value (10 μg/L). The contaminated ground-water is often derived from geologically young sediments (Holocene), low-lying areas and flat terrain where groundwater movement is slow (poorly flushed aquifers). The As content of the aquifer material is not regularly high (3–18 mg/kg), however, the groundwater As content is often exceptionally high (up to 3200 μg/L). The most notable feature of the tubewell groundwater is their predominantly reducing conditions at near-neutral pH values (6.5–7.5) with high redox sensitive species. The issue of deeper aquifer (safe and unsafe) is most challenging in terms of both geological and public health point of view. In this context, deeper aquifer is possibly the most reliable source where remediation technologies are in many cases incapable of yielding As-safe water. 

Place, publisher, year, edition, pages
CRC Press/Balkema , 2016. 47-49 p.
Keyword [en]
Aquifers, Arsenic, Groundwater, Groundwater resources, Hydrogeology, Remediation, Sustainable development, Aquifer materials, Bengal delta plains, Contaminated ground, Ground water movement, Mitigation options, Redox sensitives, Reducing conditions, Remediation technologies, Groundwater pollution
National Category
Earth and Related Environmental Sciences
Identifiers
URN: urn:nbn:se:kth:diva-207534Scopus ID: 2-s2.0-85016935731ISBN: 9781138029415 (print)OAI: oai:DiVA.org:kth-207534DiVA: diva2:1103834
Conference
6th International Congress on Arsenic in the Environment, AS 2016, 19 June 2016 through 23 June 2016
Note

Conference code: 175559; Export Date: 22 May 2017; Conference Paper; Funding details: BMZ, Bundesministerium für Wirtschaftliche Zusammenarbeit und Entwicklung; Funding details: DFG, Deutsche Forschungsgemeinschaft; Funding details: DST, Department of Science and Technology, Government of West Bengal; Funding details: UoK, University of Kalyani; Funding text: We acknowledge the laboratory support under the DFG-BMZ funded project for Research Cooperation with Developing Countries (Project Stu 169/37-1). We would also like to acknowledge the DST-PURSE fund, Government of India to support the research activities in the Department of Chemistry, University of Kalyani. QC 20170531

Available from: 2017-05-31 Created: 2017-05-31 Last updated: 2017-05-31Bibliographically approved

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Bhattacharya, Prosun

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