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dc.contributor.author
Jaeger, Anna
dc.contributor.author
Coll, Claudia
dc.contributor.author
Posselt, Malte
dc.contributor.author
Mechelke, Jonas
dc.contributor.author
Rutere, Cyrus
dc.contributor.author
Betterle, Andrea
dc.contributor.author
Raza, Muhammad
dc.contributor.author
Mehrtens, Anne
dc.contributor.author
Meinikmann, Karin
dc.contributor.author
Portmann, Andrea
dc.contributor.author
Singh, Tanu
dc.contributor.author
Blaen, Phillip J.
dc.contributor.author
Krause, Stefan
dc.contributor.author
Horn, Marcus A.
dc.contributor.author
Hollender, Juliane
dc.contributor.author
Benskin, Jonathan P.
dc.contributor.author
Sobek, Anna
dc.contributor.author
Lewandowski, Jörg
dc.date.accessioned
2020-01-06T11:09:33Z
dc.date.available
2019-12-21T03:23:50Z
dc.date.available
2020-01-06T11:09:33Z
dc.date.issued
2019-12-01
dc.identifier.issn
2050-7887
dc.identifier.issn
2050-7895
dc.identifier.other
10.1039/c9em00327d
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/387032
dc.identifier.doi
10.3929/ethz-b-000387032
dc.description.abstract
Enhancing the understanding of the fate of wastewater-derived organic micropollutants in rivers is crucial to improve risk assessment, regulatory decision making and river management. Hyporheic exchange and sediment bacterial diversity are two factors gaining increasing importance as drivers for micropollutant degradation, but are complex to study in field experiments and usually ignored in laboratory tests aimed to estimate environmental half-lives. Flume mesocosms are useful to investigate micropollutant degradation processes, bridging the gap between the field and batch experiments. However, few studies have used flumes in this context. We present a novel experimental setup using 20 recirculating flumes and a response surface model to study the influence of hyporheic exchange and sediment bacterial diversity on half-lives of the anti-epileptic drug carbamazepine (CBZ) and the artificial sweetener acesulfame (ACS). The effect of bedform-induced hyporheic exchange was tested by three treatment levels differing in number of bedforms (0, 3 and 6). Three levels of sediment bacterial diversity were obtained by diluting sediment from the River Erpe in Berlin, Germany, with sand (1 : 10, 1 : 1000 and 1 : 100 000). Our results show that ACS half-lives were significantly influenced by sediment dilution and number of bedforms. Half-lives of CBZ were higher than ACS, and were significantly affected only by the sediment dilution variable, and thus by bacterial diversity. Our results show that (1) the flume-setup is a useful tool to study the fate of micropollutants in rivers, and that (2) higher hyporheic exchange and bacterial diversity in the sediment can increase the degradation of micropollutants in rivers.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Royal Society of Chemistry
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/3.0/
dc.title
Using recirculating flumes and a response surface model to investigate the role of hyporheic exchange and bacterial diversity on micropollutant half-lives
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 3.0 Unported
dc.date.published
2019-10-17
ethz.journal.title
Environmental Science: Processes & Impacts
ethz.journal.volume
21
en_US
ethz.journal.issue
12
en_US
ethz.journal.abbreviated
Environ Sci Process Impacts
ethz.pages.start
2093
en_US
ethz.pages.end
2108
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
Cambridge
en_US
ethz.publication.status
published
en_US
ethz.date.deposited
2019-12-21T03:24:13Z
ethz.source
SCOPUS
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2020-01-06T11:09:44Z
ethz.rosetta.lastUpdated
2020-02-15T23:05:47Z
ethz.rosetta.versionExported
true
ethz.COinS
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