TY - JOUR
T1 - Making good use of methane to remove oxidized contaminants from wastewater
AU - Shi, Ling Dong
AU - Wang, Zhen
AU - Liu, Tao
AU - Wu, Mengxiong
AU - Lai, Chun Yu
AU - Rittmann, Bruce E.
AU - Guo, Jianhua
AU - Zhao, He Ping
N1 - Funding Information:
This work is supported by the National Natural Science Foundation of China (Grant No. 51878596 ) and the Key Technology R&D Program of Zhejiang Province (2021C03171).
Publisher Copyright:
© 2021
PY - 2021/6/1
Y1 - 2021/6/1
N2 - Being an energetic fuel, methane is able to support microbial growth and drive the reduction of various electron acceptors. These acceptors include a broad range of oxidized contaminants (e.g., nitrate, nitrite, perchlorate, bromate, selenate, chromate, antimonate and vanadate) that are ubiquitously detected in water environments and pose threats to human and ecological health. Using methane as electron donor to biologically reduce these contaminants into nontoxic forms is a promising solution to remediate polluted water, considering that methane is a widely available and inexpensive electron donor. The understanding of methane-based biological reduction processes and the responsible microorganisms has grown in the past decade. This review summarizes the fundamentals of metabolic pathways and microorganisms mediating microbial methane oxidation. Experimental demonstrations of methane as an electron donor to remove oxidized contaminants are summarized, compared, and evaluated. Finally, the review identifies opportunities and unsolved questions that deserve future explorations for broadening understanding of methane oxidation and promoting its practical applications.
AB - Being an energetic fuel, methane is able to support microbial growth and drive the reduction of various electron acceptors. These acceptors include a broad range of oxidized contaminants (e.g., nitrate, nitrite, perchlorate, bromate, selenate, chromate, antimonate and vanadate) that are ubiquitously detected in water environments and pose threats to human and ecological health. Using methane as electron donor to biologically reduce these contaminants into nontoxic forms is a promising solution to remediate polluted water, considering that methane is a widely available and inexpensive electron donor. The understanding of methane-based biological reduction processes and the responsible microorganisms has grown in the past decade. This review summarizes the fundamentals of metabolic pathways and microorganisms mediating microbial methane oxidation. Experimental demonstrations of methane as an electron donor to remove oxidized contaminants are summarized, compared, and evaluated. Finally, the review identifies opportunities and unsolved questions that deserve future explorations for broadening understanding of methane oxidation and promoting its practical applications.
KW - Aerobic methane oxidation
KW - Anaerobic methane oxidation
KW - Membrane biofilm reactor (MBfR)
KW - Nitrate/nitrite-dependent anaerobic methane oxidation (n-DAMO)
KW - Oxidized contaminants
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U2 - 10.1016/j.watres.2021.117082
DO - 10.1016/j.watres.2021.117082
M3 - Article
C2 - 33819663
AN - SCOPUS:85103989321
SN - 0043-1354
VL - 197
JO - Water Research
JF - Water Research
M1 - 117082
ER -