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The Fate of Dissolved Organic Matter (DOM) During Bank Filtration under Different Environmental Conditions: Batch and Column Studies
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Trace Organic Removal during River Bank Filtration for Two Types of Sediment

Working Group Hydrogeology and Landscape Hydrology, Department of Biology and Environmental Sciences, Carl von Ossietzky University of Oldenburg, D-26111 Oldenburg, Germany
Berliner Wasserbetriebe, 10864 Berlin, Germany
Author to whom correspondence should be addressed.
Water 2018, 10(12), 1736;
Received: 26 October 2018 / Revised: 16 November 2018 / Accepted: 21 November 2018 / Published: 26 November 2018
(This article belongs to the Special Issue Efficiency of Bank Filtration and Post-Treatment)
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The process of bank filtration acts as a barrier against many anthropogenic micropollutants, such as pharmaceuticals and industrial products, leading to a substantial improvement of groundwater quality. The performance of this barrier is, however, affected by seasonal influences and subject to significant temporal changes, which have already been described in the literature. Much less is known about spatial differences when considering one field site. In order to investigate this issue, two undisturbed cores from a well-investigated bank filtration field site were sampled and operated in the course of a column study. The ultimate aim was the identification and quantification of heterogeneities with regard to the biodegradation of 14 wastewater derived micropollutants, amongst others acesulfame, gabapentin, metoprolol, oxypurinol, candesartan, and olmesartan. While six of the compounds entirely persisted, eight compounds were prone to degradation. For those compounds that were subject to degradation, degradation rate constants ranged between 0.2 day−1 (gabapentin) and 31 day−1 (valsartan acid). Further, the rate constants consistently diverged between the distinct cores. In case of the gabapentin metabolite gabapentin-lactam, observed removal rate constants differed by a factor of six between the cores. Experimental data were compared to values calculated according to two structure based prediction models. View Full-Text
Keywords: redox sensitivity; micropollutants; oxypurinol; gabapentin redox sensitivity; micropollutants; oxypurinol; gabapentin

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Burke, V.; Schneider, L.; Greskowiak, J.; Zerball-van Baar, P.; Sperlich, A.; Dünnbier, U.; Massmann, G. Trace Organic Removal during River Bank Filtration for Two Types of Sediment. Water 2018, 10, 1736.

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