Hydrogeochemical patterns, processes and mass transfers during aquifer storage and recovery (ASR) in an anoxic sandy aquifer.

E.A. Antoniou, B.M. van Breukelen, B. Putters, P.J. Stuijfzand

    Research output: Contribution to JournalArticleAcademicpeer-review

    Abstract

    The hydrogeochemical processes that took place during an aquifer storage and recovery (ASR) trial in a confined anoxic sandy aquifer (Herten, the Netherlands) were identified and quantified, using observation wells at 0.1, 8 and 25m distance from the ASR well. Oxic drinking water was injected in 14 ASR cycles in the period 2000-2009. The main reactions consisted of the oxidation of pyrite, sedimentary organic matter, and (adsorbed) Fe(II) and Mn(II) in all aquifer layers (A-D), whereas the dissolution of carbonates (Mg-calcite and Mn-siderite) occurred mainly in aquifer layer D. Extinction of the mobilization of SO
    Original languageEnglish
    Pages (from-to)2435-2452
    Number of pages18
    JournalApplied Geochemistry
    Volume27
    Issue number12
    DOIs
    Publication statusPublished - 2012

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