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Tytuł pozycji:

A new strategy to recover from volatile fatty acid inhibition in anaerobic digestion by photosynthetic bacteria.

Tytuł:
A new strategy to recover from volatile fatty acid inhibition in anaerobic digestion by photosynthetic bacteria.
Autorzy:
Zhao W; College of Environmental Science and Engineering/Sino-Canada Joint R&D Centre on Water and Environmental Safety, Nankai University, Tianjin 300071, PR China.
Jeanne Huang J; College of Environmental Science and Engineering/Sino-Canada Joint R&D Centre on Water and Environmental Safety, Nankai University, Tianjin 300071, PR China. Electronic address: .
Hua B; College of Environmental Science and Engineering/Sino-Canada Joint R&D Centre on Water and Environmental Safety, Nankai University, Tianjin 300071, PR China.
Huang Z; Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, PR China.
Droste RL; Department of Civil Engineering, University of Ottawa, Ottawa, ON K1N6N5, Canada.
Chen L; College of Environmental Science and Engineering/Sino-Canada Joint R&D Centre on Water and Environmental Safety, Nankai University, Tianjin 300071, PR China.
Wang B; College of Environmental Science and Engineering/Sino-Canada Joint R&D Centre on Water and Environmental Safety, Nankai University, Tianjin 300071, PR China.
Yang C; College of Environmental Science and Engineering/Sino-Canada Joint R&D Centre on Water and Environmental Safety, Nankai University, Tianjin 300071, PR China.
Yang S; College of Environmental Science and Engineering/Sino-Canada Joint R&D Centre on Water and Environmental Safety, Nankai University, Tianjin 300071, PR China.
Źródło:
Bioresource technology [Bioresour Technol] 2020 Sep; Vol. 311, pp. 123501. Date of Electronic Publication: 2020 May 08.
Typ publikacji:
Journal Article
Język:
English
Imprint Name(s):
Original Publication: Barking, Essex, England : New York, N.Y. : Elsevier Applied Science ; Elsevier Science Pub. Co., 1991-
MeSH Terms:
Bioreactors*
Fatty Acids, Volatile*
Anaerobiosis ; Bacteria ; Bacteria, Anaerobic ; Methane
Contributed Indexing:
Keywords: Anaerobic digestion; Bioaugmentation; Microbial community; Photosynthetic bacteria; VFAs inhibition
Substance Nomenclature:
0 (Fatty Acids, Volatile)
OP0UW79H66 (Methane)
Entry Date(s):
Date Created: 20200517 Date Completed: 20200609 Latest Revision: 20200609
Update Code:
20240105
DOI:
10.1016/j.biortech.2020.123501
PMID:
32416492
Czasopismo naukowe
The accumulation of volatile fatty acids (VFAs) can decrease reactor pH and inhibit methane-producing process. For the first time, photosynthetic bacteria (PSB) were used to recover from VFAs inhibition (pH 6.0) of an anaerobic digestion system. After adding PSB for 12 days with and without light condition, the methane content recovered from 33.3% to 60.5% and from 32.1% to 59.3%, respectively; the pH increased to 7.1 and 6.8, respectively, the system alkalinity rapidly increased to 2238 and 1921 mg/L, respectively; the sCOD decreased from 5600 to 995 mg/L and from 5575 to 2025 mg/L, respectively; and the contents of formic acid, acetic acid, propionic acid and total VFA were greatly reduced. Microbial analysis found that PSB bioaugmentation could maintain microbial diversity of the system. PSB bioaugmentation could effectively relieve acids accumulation and stimulate methane production especially under light condition. It is also found that light could accelerate recovery with or without bioaugmentation.
Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2020 Elsevier Ltd. All rights reserved.)

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