Subsurface arsenic removal—experiences from Bangladesh

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Subsurface arsenic (As) removal is a technology based on injection of aerated water into an anoxic or anaerobic aquifer that is rich in both iron and As. This injection procedure will onset the oxidation of adsorbed Fe(II), resulting in the formation of Fe(III) oxides for subsequent As adsorption during abstraction. The series of studies executed between 2008–2014 have shown that achieving high V/Vi ratios, i.e., ratio between abstracted and injected volume, with low As concentrations is challenging. Experimenting with operational conditions can enhance performance, as well as choosing geochemically favorable conditions, however, in this study water revenues remained below V/Vi = 2.

Original languageEnglish
Title of host publicationArsenic Research and Global Sustainability - Proceedings of the 6th International Congress on Arsenic in the Environment, AS 2016
EditorsP. Bhattacharya, M. Vahter, J. Jarsjö, J. Kumpiene, A. Ahmad, C. Sparrenbom, G. Jacks, M.E. Donselaar, J. Bundschuh, R. Naidu
PublisherCRC Press / Balkema - Taylor & Francis Group
Number of pages2
ISBN (Electronic)978-1-315-62943-8
ISBN (Print)978-1-138-02941-5
Publication statusPublished - 2016
Event6th International Congress on Arsenic in the Environment -, Stockholm, Sweden
Duration: 19 Jun 201623 Jun 2016
Conference number: 6


Conference6th International Congress on Arsenic in the Environment
Abbreviated titleAS 2016

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