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Geochemical processes for mobilization of arsenic in groundwater

conference contribution
posted on 2023-11-06, 02:36 authored by Indika Herath, J Bundschuh, M Vithanage, P Bhattacharya
This paper presents an overview of natural geochemical processes that can mobilize arsenic (As) from aquifer sediments into groundwater. The primary source of As in groundwater is pre-dominantly natural (geogenic), and can be mobilized via complicated biogeochemical interactions within various aquifer solids and water. Oxidation of sulfide minerals such as arsenopyrite, As-substituted pyrite and other sulfide minerals are susceptible to oxidation in near surface environment, and release significant quantities of As from sediments. Reductive dissolution of As-bearing Fe(III) oxides/hydroxides 2and sulfide oxidation are the most common and significant geochemical triggers that tend to release As from aquifer sediments into groundwater. Hence, strengthening direct action and implementation of the best practices to target the safe groundwater sources for installing safe drinking water wells are an urgent necessity for sustainable As mitigation on a global scale.

History

Pagination

23-24

Location

Stockholm, Sweden

Start date

2016-06-19

End date

2016-06-23

ISSN

2154-6568

eISSN

2372-3599

ISBN-13

9781138029415

Language

eng

Title of proceedings

Arsenic Research and Global Sustainability - Proceedings of the 6th International Congress on Arsenic in the Environment, AS 2016

Event

Arsenic Research and Global Sustainability . Conference. (2016 : 6th : Stockholm, Sweden)

Publisher

CRC Press

Place of publication

London, Eng.

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