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Study on Degradation of Oily Wastewater by Immobilized Microorganisms with Biodegradable Polyacrylamide and Sodium Alginate Mixture

[Image: see text] In this work, four immobilized kinds of mixed microorganisms were prepared by uploading oil-degradation bacteria into the cross-linked biodegradable polyacrylamide and sodium alginate mixture supporting material, which were employed for efficient degradation of oily wastewater. The...

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Autores principales: Chen, Lihua, Zhao, Shujing, Yang, Yiming, Li, Li, Wang, Dongmei
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2019
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6751735/
https://www.ncbi.nlm.nih.gov/pubmed/31552360
http://dx.doi.org/10.1021/acsomega.9b02045
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author Chen, Lihua
Zhao, Shujing
Yang, Yiming
Li, Li
Wang, Dongmei
author_facet Chen, Lihua
Zhao, Shujing
Yang, Yiming
Li, Li
Wang, Dongmei
author_sort Chen, Lihua
collection PubMed
description [Image: see text] In this work, four immobilized kinds of mixed microorganisms were prepared by uploading oil-degradation bacteria into the cross-linked biodegradable polyacrylamide and sodium alginate mixture supporting material, which were employed for efficient degradation of oily wastewater. The morphology of immobilized microbial pellets was characterized by scanning electron microscopy after 7d and 14d of duration. The components of residual crude oil were determined by gas chromatography–mass spectrometry, and the microbial degradation and evolution of n-alkanes, terpenoids, and steroids were studied. The results show that the oil degradation rate for experimental group I (sample containing 1% crude oil) and experimental group II (sample containing 3% crude oil) reaches as high as 70 and 40%, respectively, after 14d of degradation of saturated hydrocarbon total petroleum hydrocarbons. For different oil components, the degradation degree is in the order of tricycoloditerpanes > homohopanes > norhopanes. The order of the degradation degree of steroids with different carbon atoms is C(27) > C(28) > C(29). In terms of evolution characteristics, it can be seen from the biological evolution parameters of n-alkanes that only a slight degradation for odd-even carbon by biodegradable bacteria was achieved, whereas high degradation for isoprene alkanes was observed. According to the biological evolution parameters of hopane and sterane, hopane C31α β-22S/22S + R and sterane C29α α20S/20(S + R) were all greater than 0.4, that is, they are all strongly degraded by microorganisms.
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spelling pubmed-67517352019-09-24 Study on Degradation of Oily Wastewater by Immobilized Microorganisms with Biodegradable Polyacrylamide and Sodium Alginate Mixture Chen, Lihua Zhao, Shujing Yang, Yiming Li, Li Wang, Dongmei ACS Omega [Image: see text] In this work, four immobilized kinds of mixed microorganisms were prepared by uploading oil-degradation bacteria into the cross-linked biodegradable polyacrylamide and sodium alginate mixture supporting material, which were employed for efficient degradation of oily wastewater. The morphology of immobilized microbial pellets was characterized by scanning electron microscopy after 7d and 14d of duration. The components of residual crude oil were determined by gas chromatography–mass spectrometry, and the microbial degradation and evolution of n-alkanes, terpenoids, and steroids were studied. The results show that the oil degradation rate for experimental group I (sample containing 1% crude oil) and experimental group II (sample containing 3% crude oil) reaches as high as 70 and 40%, respectively, after 14d of degradation of saturated hydrocarbon total petroleum hydrocarbons. For different oil components, the degradation degree is in the order of tricycoloditerpanes > homohopanes > norhopanes. The order of the degradation degree of steroids with different carbon atoms is C(27) > C(28) > C(29). In terms of evolution characteristics, it can be seen from the biological evolution parameters of n-alkanes that only a slight degradation for odd-even carbon by biodegradable bacteria was achieved, whereas high degradation for isoprene alkanes was observed. According to the biological evolution parameters of hopane and sterane, hopane C31α β-22S/22S + R and sterane C29α α20S/20(S + R) were all greater than 0.4, that is, they are all strongly degraded by microorganisms. American Chemical Society 2019-09-05 /pmc/articles/PMC6751735/ /pubmed/31552360 http://dx.doi.org/10.1021/acsomega.9b02045 Text en Copyright © 2019 American Chemical Society This is an open access article published under an ACS AuthorChoice License (http://pubs.acs.org/page/policy/authorchoice_termsofuse.html) , which permits copying and redistribution of the article or any adaptations for non-commercial purposes.
spellingShingle Chen, Lihua
Zhao, Shujing
Yang, Yiming
Li, Li
Wang, Dongmei
Study on Degradation of Oily Wastewater by Immobilized Microorganisms with Biodegradable Polyacrylamide and Sodium Alginate Mixture
title Study on Degradation of Oily Wastewater by Immobilized Microorganisms with Biodegradable Polyacrylamide and Sodium Alginate Mixture
title_full Study on Degradation of Oily Wastewater by Immobilized Microorganisms with Biodegradable Polyacrylamide and Sodium Alginate Mixture
title_fullStr Study on Degradation of Oily Wastewater by Immobilized Microorganisms with Biodegradable Polyacrylamide and Sodium Alginate Mixture
title_full_unstemmed Study on Degradation of Oily Wastewater by Immobilized Microorganisms with Biodegradable Polyacrylamide and Sodium Alginate Mixture
title_short Study on Degradation of Oily Wastewater by Immobilized Microorganisms with Biodegradable Polyacrylamide and Sodium Alginate Mixture
title_sort study on degradation of oily wastewater by immobilized microorganisms with biodegradable polyacrylamide and sodium alginate mixture
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6751735/
https://www.ncbi.nlm.nih.gov/pubmed/31552360
http://dx.doi.org/10.1021/acsomega.9b02045
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