Biocompatibility and biodegradability of polyacrylate/ZnO nanocomposite during the activated sludge treatment process.

Polymer nanocomposites have been widely used in the preparation of coating agents in the leather industry. Considering the complex bio-effect and ecological risk of nanomaterial, research on the biodegradability and biocompatibility of polyacrylate/metal nanocomposites in activated sludge system is...

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Main Authors: Chao Zhu, Huiqin Wang, Zarak Mahmood, Qing Wang, Hongrui Ma
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2018-01-01
Series:PLoS ONE
Online Access:http://europepmc.org/articles/PMC6211664?pdf=render
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author Chao Zhu
Huiqin Wang
Zarak Mahmood
Qing Wang
Hongrui Ma
author_facet Chao Zhu
Huiqin Wang
Zarak Mahmood
Qing Wang
Hongrui Ma
author_sort Chao Zhu
collection DOAJ
description Polymer nanocomposites have been widely used in the preparation of coating agents in the leather industry. Considering the complex bio-effect and ecological risk of nanomaterial, research on the biodegradability and biocompatibility of polyacrylate/metal nanocomposites in activated sludge system is of specific significance. We investigated the change of the bacterial community and diversity of activated sludge fed with polyacrylate/ZnO nanocomposites in both low (500 mg COD /L) and high (1000 mg COD/L) doses. COD removal, dehydrogenase activity, and total protein of activated sludge system were monitored in all treatments over 30 days. The results demonstrated that the exposure to both polyacrylate/ ZnO nanocomposite and polyacrylate decreased the dehydrogenase activity at early stage comparing to the control, but had no significant influence on COD removal. Overall, the bacterial communities in activated sludge were resistant to polyacrylate/ZnO nanocomposites, and had higher levels of metabolic activity, protein accumulation and bioavailability when exposed to these chemicals comparing to the control especially at later stages of incubation (15-30 days), which indicated that these polyacrylate/ZnO nanocomposites of certain amount were biocompatible to activated sludge system.
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spelling doaj.art-5046fbd0265c4474b3a80ba48f4786732022-12-21T23:17:36ZengPublic Library of Science (PLoS)PLoS ONE1932-62032018-01-011311e020599010.1371/journal.pone.0205990Biocompatibility and biodegradability of polyacrylate/ZnO nanocomposite during the activated sludge treatment process.Chao ZhuHuiqin WangZarak MahmoodQing WangHongrui MaPolymer nanocomposites have been widely used in the preparation of coating agents in the leather industry. Considering the complex bio-effect and ecological risk of nanomaterial, research on the biodegradability and biocompatibility of polyacrylate/metal nanocomposites in activated sludge system is of specific significance. We investigated the change of the bacterial community and diversity of activated sludge fed with polyacrylate/ZnO nanocomposites in both low (500 mg COD /L) and high (1000 mg COD/L) doses. COD removal, dehydrogenase activity, and total protein of activated sludge system were monitored in all treatments over 30 days. The results demonstrated that the exposure to both polyacrylate/ ZnO nanocomposite and polyacrylate decreased the dehydrogenase activity at early stage comparing to the control, but had no significant influence on COD removal. Overall, the bacterial communities in activated sludge were resistant to polyacrylate/ZnO nanocomposites, and had higher levels of metabolic activity, protein accumulation and bioavailability when exposed to these chemicals comparing to the control especially at later stages of incubation (15-30 days), which indicated that these polyacrylate/ZnO nanocomposites of certain amount were biocompatible to activated sludge system.http://europepmc.org/articles/PMC6211664?pdf=render
spellingShingle Chao Zhu
Huiqin Wang
Zarak Mahmood
Qing Wang
Hongrui Ma
Biocompatibility and biodegradability of polyacrylate/ZnO nanocomposite during the activated sludge treatment process.
PLoS ONE
title Biocompatibility and biodegradability of polyacrylate/ZnO nanocomposite during the activated sludge treatment process.
title_full Biocompatibility and biodegradability of polyacrylate/ZnO nanocomposite during the activated sludge treatment process.
title_fullStr Biocompatibility and biodegradability of polyacrylate/ZnO nanocomposite during the activated sludge treatment process.
title_full_unstemmed Biocompatibility and biodegradability of polyacrylate/ZnO nanocomposite during the activated sludge treatment process.
title_short Biocompatibility and biodegradability of polyacrylate/ZnO nanocomposite during the activated sludge treatment process.
title_sort biocompatibility and biodegradability of polyacrylate zno nanocomposite during the activated sludge treatment process
url http://europepmc.org/articles/PMC6211664?pdf=render
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