Understanding the relation of As and Mn biogeochemistry within fe-rich sediments in southeast Asian aquifers

Datta, S. and Vega, M. and Kempton, P. and Kumar, N. and Johannesson, K. and Bhattacharya, P. (2016) Understanding the relation of As and Mn biogeochemistry within fe-rich sediments in southeast Asian aquifers. In: 6th International Congress on Arsenic in the Environment: Arsenic Research and Global Sustainability (AS 2016), 19-23 June 2016, Stockholm, Sweden.


Abstract

Aquifer sediments were collected from varying depths from selected villages in Murshidabad, India. Hydrological and physico-chemical parameters of groundwater were measured and aquifer cores were collected. Solid phase analysis includes X-Ray Diffraction (XRD), X-ray Absorption Spectroscopy (XAS) and x-ray imaging. Primary focus of this work was to understand the inter-relation of As and Mn biogeochemistry in presence of Fe-rich minerals. Mechanism of As and Mn release is controlled by the oxidation-reduction of Fe bearing minerals in these subsurface aquifers. With our spectroscopy data, we have observed reduced As and Mn species in aquifer sediment as the depth increased relating directly to elevated concentration of As and Mn observed in groundwater. These observations are vital in understanding the inter-depending behavior of As and Mn in subsurface sediments.


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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: Yes
Item Status: Live Archive
Additional Information: Copyright © 2016 Taylor and Francis Group, London, UK. All rights reserved. No part of this publication or the information contained herein may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, by photocopying, recording or otherwise, without written prior permission from the publisher.
Faculty/School / Institute/Centre: Current - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying (1 July 2013 -)
Faculty/School / Institute/Centre: Current - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying (1 July 2013 -)
Date Deposited: 25 Feb 2020 05:55
Last Modified: 02 Jul 2020 03:19
Uncontrolled Keywords: aquifers; arsenic; biogeochemistry; groundwater; groundwater resources; hydrogeology; sediments; sustainable development; X ray absorption spectroscopy; X ray diffraction
Fields of Research : 04 Earth Sciences > 0406 Physical Geography and Environmental Geoscience > 040603 Hydrogeology
09 Engineering > 0904 Chemical Engineering > 090410 Water Treatment Processes
03 Chemical Sciences > 0399 Other Chemical Sciences > 039901 Environmental Chemistry (incl. Atmospheric Chemistry)
URI: http://eprints.usq.edu.au/id/eprint/36023

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