Impact of Temperature on the Performance and Character of the Methanogenic Community of a Fixed-Bed Anaerobic Reactor at Psychrophilic Temperature

To determine the effects of a gradual temperature decrease on reactor performance and the microbial community, four fixed-bed reactors that were packed with a biofilm carrier were operated for 217 days. The temperature of the reactors was decreased from 30 °C to 3 °C. The reactors initially soured a...

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Autores principales:	Hongyan Zhao, Hongdou Liu, Yu Sun, Liqiang Zhang, Ullah Fazl, Renzhe Piao, Weidong Wang, Zongjun Cui
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	fixed-bed reactor molasses wastewater low-temperature anaerobic digestion methanomicrobiale Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500
Acceso en línea:	https://doaj.org/article/61efe1cec24b4d94af14e1ce4abe28fd
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spelling	oai:doaj.org-article:61efe1cec24b4d94af14e1ce4abe28fd2021-11-11T19:55:46ZImpact of Temperature on the Performance and Character of the Methanogenic Community of a Fixed-Bed Anaerobic Reactor at Psychrophilic Temperature10.3390/w132130512073-4441https://doaj.org/article/61efe1cec24b4d94af14e1ce4abe28fd2021-11-01T00:00:00Zhttps://www.mdpi.com/2073-4441/13/21/3051https://doaj.org/toc/2073-4441To determine the effects of a gradual temperature decrease on reactor performance and the microbial community, four fixed-bed reactors that were packed with a biofilm carrier were operated for 217 days. The temperature of the reactors was decreased from 30 °C to 3 °C. The reactors initially soured at 3 °C and recovered when they were returned to 4 °C, as indicated by the stabilization of biogas production, methane production, VFA concentration, pH, and the COD removal rate. Our results also revealed that methanomicrobiales were the dominant methanogen, the concentration of the 16S rRNA gene in the carbon-fiber carrier sludge exceeded the same gene concentration in the deposited sludge, and that the carbon-fiber carrier played an important role in methanomicrobiale colonization at low temperatures. We suggest that 4 °C is the low-temperature threshold for optimal reactor performance.Hongyan ZhaoHongdou LiuYu SunLiqiang ZhangUllah FazlRenzhe PiaoWeidong WangZongjun CuiMDPI AGarticlefixed-bed reactormolasses wastewaterlow-temperature anaerobic digestionmethanomicrobialeHydraulic engineeringTC1-978Water supply for domestic and industrial purposesTD201-500ENWater, Vol 13, Iss 3051, p 3051 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	fixed-bed reactor molasses wastewater low-temperature anaerobic digestion methanomicrobiale Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500
spellingShingle	fixed-bed reactor molasses wastewater low-temperature anaerobic digestion methanomicrobiale Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500 Hongyan Zhao Hongdou Liu Yu Sun Liqiang Zhang Ullah Fazl Renzhe Piao Weidong Wang Zongjun Cui Impact of Temperature on the Performance and Character of the Methanogenic Community of a Fixed-Bed Anaerobic Reactor at Psychrophilic Temperature
description	To determine the effects of a gradual temperature decrease on reactor performance and the microbial community, four fixed-bed reactors that were packed with a biofilm carrier were operated for 217 days. The temperature of the reactors was decreased from 30 °C to 3 °C. The reactors initially soured at 3 °C and recovered when they were returned to 4 °C, as indicated by the stabilization of biogas production, methane production, VFA concentration, pH, and the COD removal rate. Our results also revealed that methanomicrobiales were the dominant methanogen, the concentration of the 16S rRNA gene in the carbon-fiber carrier sludge exceeded the same gene concentration in the deposited sludge, and that the carbon-fiber carrier played an important role in methanomicrobiale colonization at low temperatures. We suggest that 4 °C is the low-temperature threshold for optimal reactor performance.
format	article
author	Hongyan Zhao Hongdou Liu Yu Sun Liqiang Zhang Ullah Fazl Renzhe Piao Weidong Wang Zongjun Cui
author_facet	Hongyan Zhao Hongdou Liu Yu Sun Liqiang Zhang Ullah Fazl Renzhe Piao Weidong Wang Zongjun Cui
author_sort	Hongyan Zhao
title	Impact of Temperature on the Performance and Character of the Methanogenic Community of a Fixed-Bed Anaerobic Reactor at Psychrophilic Temperature
title_short	Impact of Temperature on the Performance and Character of the Methanogenic Community of a Fixed-Bed Anaerobic Reactor at Psychrophilic Temperature
title_full	Impact of Temperature on the Performance and Character of the Methanogenic Community of a Fixed-Bed Anaerobic Reactor at Psychrophilic Temperature
title_fullStr	Impact of Temperature on the Performance and Character of the Methanogenic Community of a Fixed-Bed Anaerobic Reactor at Psychrophilic Temperature
title_full_unstemmed	Impact of Temperature on the Performance and Character of the Methanogenic Community of a Fixed-Bed Anaerobic Reactor at Psychrophilic Temperature
title_sort	impact of temperature on the performance and character of the methanogenic community of a fixed-bed anaerobic reactor at psychrophilic temperature
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/61efe1cec24b4d94af14e1ce4abe28fd
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Impact of Temperature on the Performance and Character of the Methanogenic Community of a Fixed-Bed Anaerobic Reactor at Psychrophilic Temperature

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