Enhanced performance and hindered membrane fouling for the treatment of coal chemical industry wastewater using a novel membrane electro-bioreactor with intermittent direct current

Baolin Hou, Yu Kuang, Hongjun Han, Ye Liu, Bozhi Ren, Renjian Deng, Andrew S. Hursthouse

Research output: Contribution to journalArticle

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Abstract

A membrane electro-bioreactor (MEBR) embracing biological treatment, electrokinetic phenomena and membrane filtration was established by applying intermittent direct current (DC) to MBR. MEBR exhibited significant improvement of treatment performance and reduction of membrane fouling. COD and total phenols removal efficiencies increased to 83.53% and 93.28% at an exposure mode of 24’-OFF/6’-ON, compared to 71.24% and 82.43% in MBR. Trans-membrane pressure increment rate declined dramatically in MEBR, which was mainly attributed to the increase of sludge floc size and decrease of zeta potential, soluble microbial products and specific resistance to filtration, resulted from electrokinetic effects such as electrocoagulation, electrophoresis, electroosmosis and electromigration of ions. It was notable that DC exposure exerted distinct evolution on microbial community, with the improvement of microbial community richness and diversity. The relative abundances of functional genera were promoted noticeably in MEBR. An interactive relevance existed among microbial community structure, mixed liquor properties and operational parameters.
Original languageEnglish
Pages (from-to)332-339
Number of pages8
JournalBioresource Technology
Volume271
Early online date13 Sep 2018
DOIs
Publication statusPublished - 31 Jan 2019

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Chemical Industry
Coal industry
Membrane fouling
coal industry
chemical industry
Bioreactors
Chemical industry
Waste Water
fouling
bioreactor
Wastewater
membrane
Membranes
wastewater
microbial community
Therapeutics
electrokinesis
Electroosmosis
Electromigration
Phenols

Keywords

  • membrane electro-bioreactor
  • membrane fouling
  • electrokinetics
  • microbial community
  • relationship analysis
  • mixed liquor properties

Cite this

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title = "Enhanced performance and hindered membrane fouling for the treatment of coal chemical industry wastewater using a novel membrane electro-bioreactor with intermittent direct current",
abstract = "A membrane electro-bioreactor (MEBR) embracing biological treatment, electrokinetic phenomena and membrane filtration was established by applying intermittent direct current (DC) to MBR. MEBR exhibited significant improvement of treatment performance and reduction of membrane fouling. COD and total phenols removal efficiencies increased to 83.53{\%} and 93.28{\%} at an exposure mode of 24’-OFF/6’-ON, compared to 71.24{\%} and 82.43{\%} in MBR. Trans-membrane pressure increment rate declined dramatically in MEBR, which was mainly attributed to the increase of sludge floc size and decrease of zeta potential, soluble microbial products and specific resistance to filtration, resulted from electrokinetic effects such as electrocoagulation, electrophoresis, electroosmosis and electromigration of ions. It was notable that DC exposure exerted distinct evolution on microbial community, with the improvement of microbial community richness and diversity. The relative abundances of functional genera were promoted noticeably in MEBR. An interactive relevance existed among microbial community structure, mixed liquor properties and operational parameters.",
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Enhanced performance and hindered membrane fouling for the treatment of coal chemical industry wastewater using a novel membrane electro-bioreactor with intermittent direct current. / Hou, Baolin; Kuang, Yu; Han, Hongjun; Liu, Ye; Ren, Bozhi; Deng, Renjian; Hursthouse, Andrew S.

In: Bioresource Technology, Vol. 271, 31.01.2019, p. 332-339.

Research output: Contribution to journalArticle

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T1 - Enhanced performance and hindered membrane fouling for the treatment of coal chemical industry wastewater using a novel membrane electro-bioreactor with intermittent direct current

AU - Hou, Baolin

AU - Kuang, Yu

AU - Han, Hongjun

AU - Liu, Ye

AU - Ren, Bozhi

AU - Deng, Renjian

AU - Hursthouse, Andrew S.

PY - 2019/1/31

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AB - A membrane electro-bioreactor (MEBR) embracing biological treatment, electrokinetic phenomena and membrane filtration was established by applying intermittent direct current (DC) to MBR. MEBR exhibited significant improvement of treatment performance and reduction of membrane fouling. COD and total phenols removal efficiencies increased to 83.53% and 93.28% at an exposure mode of 24’-OFF/6’-ON, compared to 71.24% and 82.43% in MBR. Trans-membrane pressure increment rate declined dramatically in MEBR, which was mainly attributed to the increase of sludge floc size and decrease of zeta potential, soluble microbial products and specific resistance to filtration, resulted from electrokinetic effects such as electrocoagulation, electrophoresis, electroosmosis and electromigration of ions. It was notable that DC exposure exerted distinct evolution on microbial community, with the improvement of microbial community richness and diversity. The relative abundances of functional genera were promoted noticeably in MEBR. An interactive relevance existed among microbial community structure, mixed liquor properties and operational parameters.

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