SwePub
Sök i LIBRIS databas

  Extended search

WFRF:(Hollender J.)
 

Search: WFRF:(Hollender J.) > (2019) > Using recirculating...

Using recirculating flumes and a response surface model to investigate the role of hyporheic exchange and bacterial diversity on micropollutant half-lives

Jaeger, Anna (author)
Coll, Claudia (author)
Stockholms universitet,Institutionen för miljövetenskap och analytisk kemi
Posselt, Malte (author)
Stockholms universitet,Institutionen för miljövetenskap och analytisk kemi
show more...
Mechelke, Jonas (author)
Rutere, Cyrus (author)
Betterle, Andrea (author)
Raza, Muhammad (author)
Mehrtens, Anne (author)
Meinikmann, Karin (author)
Portmann, Andrea (author)
Singh, Tanu (author)
Blaen, Phillip J. (author)
Krause, Stefan (author)
Horn, Marcus A. (author)
Hollender, Juliane (author)
Benskin, Jonathan P. (author)
Stockholms universitet,Institutionen för miljövetenskap och analytisk kemi
Sobek, Anna (author)
Stockholms universitet,Institutionen för miljövetenskap och analytisk kemi
Lewandowski, Joerg (author)
show less...
 (creator_code:org_t)
2019
2019
English.
In: Environmental Science. - : Royal Society of Chemistry (RSC). - 2050-7887 .- 2050-7895. ; 21:12, s. 2093-2108
Related links:
https://doi.org/10.1...
show more...
https://pubs.rsc.org...
https://urn.kb.se/re...
https://doi.org/10.1...
show less...
  • Journal article (peer-reviewed)
Abstract Subject headings
Close  
  • 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.

Subject headings

NATURVETENSKAP  -- Geovetenskap och miljövetenskap -- Miljövetenskap (hsv//swe)
NATURAL SCIENCES  -- Earth and Related Environmental Sciences -- Environmental Sciences (hsv//eng)

Keyword

Applied Environmental Science
tillämpad miljövetenskap

Publication and Content Type

ref (subject category)
art (subject category)

Find in a library

To the university's database

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Close

Copy and save the link in order to return to this view