Biomethane enhancement using reduced graphene oxide in anaerobic digestion of municipal solid waste

Muratçobanoğlu H., Begüm Gökçek Ö., Muratçobanoğlu F., Mert R. A., Demirel S.

Bioresource Technology, vol.354, 2022 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 354
  • Publication Date: 2022
  • Doi Number: 10.1016/j.biortech.2022.127163
  • Journal Name: Bioresource Technology
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Aqualine, Aquatic Science & Fisheries Abstracts (ASFA), BIOSIS, Biotechnology Research Abstracts, CAB Abstracts, Chemical Abstracts Core, Compendex, EMBASE, Environment Index, Food Science & Technology Abstracts, Geobase, INSPEC, MEDLINE, Pollution Abstracts, Veterinary Science Database, Civil Engineering Abstracts
  • Keywords: Biogas, Conductive material, Direct interspecies electron transfer, Waste management, INTERSPECIES ELECTRON-TRANSFER, FOOD WASTE, SEWAGE-SLUDGE, PERFORMANCE, HYDROGEN
  • Kayseri University Affiliated: No

Abstract

© 2022The present research investigated the impact of reduced graphene oxide (rGO) addition on the semi-continuous anaerobic digestion of the organic fraction of municipal solid waste (OFMSW) in the range of 0.5–10 gVolatileSolid(VS)/Lreactorday organic loading rates (OLR). Adding rGO enhanced the rate and yield of biomethane production, and the maximum biomethane increment rate was obtained as 110% at an OLR of 4.0 gVS/Lreactorday. However, after increasing the OLR to 6 gVS/Lreactorday, there was a dramatic decrease in biomethane production because of volatile fatty acid (VFA) accumulation. Methanotrix is the predominant archaeal genus at OLRs lower than 6 gVS/Lreactorday in reactors (89–97%). An increment in biomethane production was associated with the higher abundance of the Methanothrix genus in the rGO-supported reactor (rG) than in the control reactor (rC).