PMID- 35949067
OWN - NLM
STAT- MEDLINE
DCOM- 20220812
LR  - 20221207
IS  - 1879-2448 (Electronic)
IS  - 0043-1354 (Linking)
VI  - 221
DP  - 2022 Aug 1
TI  - Insights into the impact of polyethylene microplastics on methane recovery from 
      wastewater via bioelectrochemical anaerobic digestion.
PG  - 118844
LID - S0043-1354(22)00769-2 [pii]
LID - 10.1016/j.watres.2022.118844 [doi]
AB  - Bioelectrochemical anaerobic digestion (BEAD) is a promising next-generation 
      technology for simultaneous wastewater treatment and bioenergy recovery. While 
      knowledge on the inhibitory effect of emerging pollutants, such as microplastics, 
      on the conventional wastewater anaerobic digestion processes is increasing, the 
      impact of microplastics on the BEAD process remains unknown. This study shows 
      that methane production decreased by 30.71% when adding 10 mg/L polyethylene 
      microplastics (PE-MP) to the BEAD systems. The morphology of anaerobic granular 
      sludge, which was the biocatalysts in the BEAD, changed with microbes shedding 
      and granule crack when PE-MP existed. Additionally, the presence of PE-MP shifted 
      the microbial communities, leading to a lower diversity but higher richness and 
      tight clustering. Moreover, fewer fermentative bacteria, acetogens, and 
      hydrogenotrophic methanogens (BEAD enhanced) grew under PE-MP stress, suggesting 
      that PE-MP had an inhibitory effect on the methanogenic pathways. Furthermore, 
      the abundance of genes relevant to extracellular electron transfer (omcB and 
      mtrC) and methanogens (hupL and mcrA) decreased. The electron transfer efficiency 
      reduced with extracellular cytochrome c down and a lower electron transfer system 
      activity. Finally, phylogenetic investigation of communities by reconstruction of 
      unobserved states analysis predicted the decrease of key methanogenic enzymes, 
      including EC 1.1.1.1 (Alcohol dehydrogenase), EC 1.2.99.5 (Formylmethanofuran 
      dehydrogenase), and EC 2.8.4.1 (Coenzyme-B sulfoethylthiotransferase). 
      Altogether, these results provide insight into the inhibition mechanism of 
      microplastics in wastewater methane recovery and further optimisation of the BEAD 
      process.
CI  - Copyright (c) 2022. Published by Elsevier Ltd.
FAU - Wang, Song
AU  - Wang S
AD  - Department of Environmental and Resource Engineering, Technical University of 
      Denmark, Lyngby DK-2800, Denmark.
FAU - Wang, Xueting
AU  - Wang X
AD  - Department of Environmental and Resource Engineering, Technical University of 
      Denmark, Lyngby DK-2800, Denmark; State Key Laboratory of Urban Water Resource 
      and Environment, School of Environment, Harbin Institute of Technology, Harbin, 
      Heilongjiang Province 150090, China.
FAU - Fessler, Mathias
AU  - Fessler M
AD  - Department of Environmental and Resource Engineering, Technical University of 
      Denmark, Lyngby DK-2800, Denmark.
FAU - Jin, Biao
AU  - Jin B
AD  - State Key Laboratory of Organic Geochemistry, Guangzhou Institute of 
      Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China.
FAU - Su, Yanyan
AU  - Su Y
AD  - Carlsberg Research Laboratory, Bjerregaardsvej 5, Valby 2500, Denmark. Electronic 
      address: yanyansu@daad-alumni.de.
FAU - Zhang, Yifeng
AU  - Zhang Y
AD  - Department of Environmental and Resource Engineering, Technical University of 
      Denmark, Lyngby DK-2800, Denmark. Electronic address: yifz@env.dtu.dk.
LA  - eng
PT  - Journal Article
DEP - 20220709
PL  - England
TA  - Water Res
JT  - Water research
JID - 0105072
RN  - 0 (Microplastics)
RN  - 0 (Plastics)
RN  - 0 (Sewage)
RN  - 0 (Waste Water)
RN  - 9002-88-4 (Polyethylene)
RN  - OP0UW79H66 (Methane)
SB  - IM
MH  - Anaerobiosis
MH  - Bioreactors
MH  - Methane
MH  - *Microplastics
MH  - Phylogeny
MH  - Plastics
MH  - Polyethylene
MH  - Sewage/microbiology
MH  - *Wastewater
OTO - NOTNLM
OT  - Bioelectrochemical anaerobic digestion
OT  - Extracellular electron transfer
OT  - Microplastics
OT  - Wastewater methane recovery
EDAT- 2022/08/12 06:00
MHDA- 2022/08/13 06:00
CRDT- 2022/08/11 01:01
PHST- 2022/04/17 00:00 [received]
PHST- 2022/06/26 00:00 [revised]
PHST- 2022/07/03 00:00 [accepted]
PHST- 2022/08/11 01:01 [entrez]
PHST- 2022/08/12 06:00 [pubmed]
PHST- 2022/08/13 06:00 [medline]
AID - S0043-1354(22)00769-2 [pii]
AID - 10.1016/j.watres.2022.118844 [doi]
PST - ppublish
SO  - Water Res. 2022 Aug 1;221:118844. doi: 10.1016/j.watres.2022.118844. Epub 2022 
      Jul 9.