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Bacterial Diversity...
Bacterial Diversity Controls Transformation of Wastewater-Derived Organic Contaminants in River-Simulating Flumes
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- Posselt, Malte (author)
- Stockholms universitet,Institutionen för miljövetenskap
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Mechelke, Jonas (author)
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Rutere, Cyrus (author)
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- Coll, Claudia (author)
- Stockholms universitet,Institutionen för miljövetenskap,Eawag, Swiss Federal Institute of Aquatic Science and Technology, Switzerland
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Jaeger, Anna (author)
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Raza, Muhammad (author)
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Meinikmann, Karin (author)
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Krause, Stefan (author)
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- Sobek, Anna (author)
- Stockholms universitet,Institutionen för miljövetenskap
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Lewandowski, Jorg (author)
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Horn, Marcus A. (author)
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Hollender, Juliane (author)
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- Benskin, Jonathan P. (author)
- Stockholms universitet,Institutionen för miljövetenskap
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(creator_code:org_t)
- 2020-04-06
- 2020
- English.
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In: Environmental Science and Technology. - : American Chemical Society (ACS). - 0013-936X .- 1520-5851. ; 54:9, s. 5467-5479
- Related links:
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https://doi.org/10.1...
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https://pubs.acs.org...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
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- Hyporheic zones are the water-saturated flow-through subsurfaces of rivers which are characterized by the simultaneous occurrence of multiple physical, biological, and chemical processes. Two factors playing a role in the hyporheic attenuation of organic contaminants are sediment bedforms (a major driver of hyporheic exchange) and the composition of the sediment microbial community. How these factors act on the diverse range of organic contaminants encountered downstream from wastewater treatment plants is not well understood. To address this knowledge gap, we investigated dissipation half-lives (DT50s) of 31 substances (mainly pharmaceuticals) under different combinations of bacterial diversity and bedform-induced hyporheic flow using 20 recirculating flumes in a central composite face factorial design. By combining small-volume pore water sampling, targeted analysis, and suspect screening, along with quantitative real-time PCR and time-resolved amplicon Illumina MiSeq sequencing, we determined a comprehensive set of DT50s, associated bacterial communities, and microbial transformation products. The resulting DT50s of parent compounds ranged from 0.5 (fluoxetine) to 306 days (carbamazepine), with 20 substances responding significantly to bacterial diversity and four to both diversity and hyporheic flow. Bacterial taxa that were associated with biodegradation included Acidobacteria (groups 6, 17, and 22), Actinobacteria (Nocardioides and Illumatobacter), Bacteroidetes (Terrimonas and Flavobacterium) and diverse Proteobacteria (Pseudomonadaceae, Sphingomonadaceae, and Xanthomonadaceae). Notable were the formation of valsartan acid from irbesartan and valsartan, the persistence of N-desmethylvenlafaxine across all treatments, and the identification of biuret as a novel transformation product of metformin. Twelve additional target transformation products were identified, which were persistent in either pore or surface water of at least one treatment, indicating their environmental relevance.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Naturresursteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Environmental Engineering (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Posselt, Malte
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Mechelke, Jonas
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Rutere, Cyrus
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Coll, Claudia
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Jaeger, Anna
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Raza, Muhammad
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show more...
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Meinikmann, Kari ...
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Krause, Stefan
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Sobek, Anna
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Lewandowski, Jor ...
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Horn, Marcus A.
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Hollender, Julia ...
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Benskin, Jonatha ...
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show less...
- About the subject
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- ENGINEERING AND TECHNOLOGY
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ENGINEERING AND ...
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and Environmental En ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
- Articles in the publication
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Environmental Sc ...
- By the university
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Stockholm University