Cristin-resultat-ID: 1714828
Sist endret: 19. august 2019, 12:59
NVI-rapporteringsår: 2019
Resultat
Vitenskapelig artikkel
2019

Bioelectrochemical CO2 Reduction to Methane: MES Integration in Biogas Production Processes

Bidragsytere:
  • Anirudh Bhanu Teja Nelabhotla og
  • Carlos Antonio Saldias Dinamarca

Tidsskrift

Applied Sciences
ISSN 2076-3417
e-ISSN 2076-3417
NVI-nivå 1

Om resultatet

Vitenskapelig artikkel
Publiseringsår: 2019
Volum: 9
Hefte: 6
Sider: 1 - 13
Open Access

Importkilder

Scopus-ID: 2-s2.0-85063723793

Beskrivelse Beskrivelse

Tittel

Bioelectrochemical CO2 Reduction to Methane: MES Integration in Biogas Production Processes

Sammendrag

Anaerobic digestion (AD) is a widely used technique to treat organic waste and produce biogas. This article presents a practical approach to increase biogas yield of an AD system using a microbial electrosynthesis system (MES). The biocathode in MES reduces carbon dioxide with the supplied electrons and protons (H+) to form methane. We demonstrate that the MES is able to produce biogas with over 90% methane when fed with reject water obtained from a local wastewater treatment plant. The optimised cathode potential was observed in the range of −0.70 V to −0.60 V and optimised feed pH was around 7.0. With autoclaved feed, these conditions allowed methane yields of about 9.05 mmol/L(reactor)-day. A control experiment was then carried out to make a comparison between open circuit and MES methanogenesis. The highest methane yield of about 22.1 mmol/L(reactor)-day was obtained during MES operation that performed 10–15% better than the open circuit mode of operation. We suggest and describe an integrated AD-MES system, by installing MES in the reject water loop, as a novel approach to improve the efficiency and productivity of existing waste/wastewater treatment plants.

Bidragsytere

Anirudh Bhanu Teja Nelabhotla

  • Tilknyttet:
    Forfatter
    ved Institutt for prosess-, energi- og miljøteknologi ved Universitetet i Sørøst-Norge

Carlos Dinamarca

Bidragsyterens navn vises på dette resultatet som Carlos Antonio Saldias Dinamarca
  • Tilknyttet:
    Forfatter
    ved Institutt for prosess-, energi- og miljøteknologi ved Universitetet i Sørøst-Norge
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