Role of biochar in biodegradation of nonylphenol in sediment: Increasing microbial activity versus decreasing bioavailability

Abstract The observed strong sorption of hydrophobic organic contaminants (HOCs) to biochar presents potential implications for HOCs bioavailability and bioaccessibility in sediments, while biochar could impact sediment microbial ecology. However, the comprehensive study on the effects of biochar on...

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Autores principales:	Guanghuan Cheng, Mingyang Sun, Jingrang Lu, Xinlei Ge, Huihui Zhang, Xinhua Xu, Liping Lou, Qi Lin
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/b272bfeb406f4f2ca2e739516ab5d65c
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spelling	oai:doaj.org-article:b272bfeb406f4f2ca2e739516ab5d65c2021-12-02T12:30:46ZRole of biochar in biodegradation of nonylphenol in sediment: Increasing microbial activity versus decreasing bioavailability10.1038/s41598-017-04787-22045-2322https://doaj.org/article/b272bfeb406f4f2ca2e739516ab5d65c2017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-04787-2https://doaj.org/toc/2045-2322Abstract The observed strong sorption of hydrophobic organic contaminants (HOCs) to biochar presents potential implications for HOCs bioavailability and bioaccessibility in sediments, while biochar could impact sediment microbial ecology. However, the comprehensive study on the effects of biochar on HOC biodegradation coupled with bioavailability and microbial ecology are rarely documented. In this paper, the effects of biochar on the biodegradation of nonylphenol (NP) were investigated using 3 different NP concentrations (20, 50 and 500 mg/Kg) in sediments amended with different percentage of rice straw biochar (RC). Results showed that the influence of RC on NP biodegradation varied with different NP concentrations. At low NP concentrations, RC suppressed NP biodegradation by reducing NP bioavailability, while at high NP concentrations, moderate RC addition promoted biodegradation by reducing toxicity of NP to microbes. The effects of NP on microbial community structures were significant (P < 0.01), but those of RC were not significant (P > 0.05). The RC affected microorganisms through altering NP toxicity, microbial quantity and activity, but not microbial community structures. This study indicated that there could be an optimal biochar percentage in biochar-sediment systems at different HOC concentrations, which strengthened HOC biodegradation process and accelerated biodegradation rate, forming adsorption-biodegradation coupled bioremediation.Guanghuan ChengMingyang SunJingrang LuXinlei GeHuihui ZhangXinhua XuLiping LouQi LinNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-11 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Guanghuan Cheng Mingyang Sun Jingrang Lu Xinlei Ge Huihui Zhang Xinhua Xu Liping Lou Qi Lin Role of biochar in biodegradation of nonylphenol in sediment: Increasing microbial activity versus decreasing bioavailability
description	Abstract The observed strong sorption of hydrophobic organic contaminants (HOCs) to biochar presents potential implications for HOCs bioavailability and bioaccessibility in sediments, while biochar could impact sediment microbial ecology. However, the comprehensive study on the effects of biochar on HOC biodegradation coupled with bioavailability and microbial ecology are rarely documented. In this paper, the effects of biochar on the biodegradation of nonylphenol (NP) were investigated using 3 different NP concentrations (20, 50 and 500 mg/Kg) in sediments amended with different percentage of rice straw biochar (RC). Results showed that the influence of RC on NP biodegradation varied with different NP concentrations. At low NP concentrations, RC suppressed NP biodegradation by reducing NP bioavailability, while at high NP concentrations, moderate RC addition promoted biodegradation by reducing toxicity of NP to microbes. The effects of NP on microbial community structures were significant (P < 0.01), but those of RC were not significant (P > 0.05). The RC affected microorganisms through altering NP toxicity, microbial quantity and activity, but not microbial community structures. This study indicated that there could be an optimal biochar percentage in biochar-sediment systems at different HOC concentrations, which strengthened HOC biodegradation process and accelerated biodegradation rate, forming adsorption-biodegradation coupled bioremediation.
format	article
author	Guanghuan Cheng Mingyang Sun Jingrang Lu Xinlei Ge Huihui Zhang Xinhua Xu Liping Lou Qi Lin
author_facet	Guanghuan Cheng Mingyang Sun Jingrang Lu Xinlei Ge Huihui Zhang Xinhua Xu Liping Lou Qi Lin
author_sort	Guanghuan Cheng
title	Role of biochar in biodegradation of nonylphenol in sediment: Increasing microbial activity versus decreasing bioavailability
title_short	Role of biochar in biodegradation of nonylphenol in sediment: Increasing microbial activity versus decreasing bioavailability
title_full	Role of biochar in biodegradation of nonylphenol in sediment: Increasing microbial activity versus decreasing bioavailability
title_fullStr	Role of biochar in biodegradation of nonylphenol in sediment: Increasing microbial activity versus decreasing bioavailability
title_full_unstemmed	Role of biochar in biodegradation of nonylphenol in sediment: Increasing microbial activity versus decreasing bioavailability
title_sort	role of biochar in biodegradation of nonylphenol in sediment: increasing microbial activity versus decreasing bioavailability
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/b272bfeb406f4f2ca2e739516ab5d65c
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_version_	1718394355735068672

Role of biochar in biodegradation of nonylphenol in sediment: Increasing microbial activity versus decreasing bioavailability

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