Strategies to improve viability of a circular carbon bioeconomy-A techno-economic review of microbial electrosynthesis and gas fermentation

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Jamin C. Wood
  • Johannes Grové
  • Esteban Marcellin
  • James K. Heffernan
  • Shihu Hu
  • Bernardino Virdis

Detail(s)

Original languageEnglish
Article number117306
Journal / PublicationWater Research
Volume201
Online published27 May 2021
Publication statusPublished - 1 Aug 2021
Externally publishedYes

Abstract

A circular carbon bioeconomy has potential to halt atmospheric accumulation of greenhouse gases causing climate change and sustainably produce chemical, agricultural and fuel products. Here, we report application of a simplified technoeconomic assessment to critically review two approaches in this space – microbial electrosynthesis and gas fermentation. For microbial electrosynthesis, decoupling of surface-dependant abiotic process for electron delivery from volume-dependant biotic carbon fixation, is shown as the only economically viable strategy to scale-up due to comparatively low biofilm electron consumption rate. This is effectively an electrolyser-assisted gas fermentation system. Targeting high-value products, such as protein for human food consumption is one of the few pathways forward for electrolyser-assisted gas fermentation. Alternatively, gas fermentation of reformed biogas presents an interesting and potentially more sustainable implementation pathway to improve economic viability of chemicals. This critical review suggests linking water treatment resource recovery with gas fermentation is attractive for bioplastics and butanol in terms of competitiveness and market demand. © 2021 Elsevier Ltd

Research Area(s)

  • Biogas, Carbon dioxide, Circular economy, Gas fermentation, Microbial electrosynthesis, Techno-economic analysis

Citation Format(s)

Strategies to improve viability of a circular carbon bioeconomy-A techno-economic review of microbial electrosynthesis and gas fermentation. / Wood, Jamin C.; Grové, Johannes; Marcellin, Esteban et al.
In: Water Research, Vol. 201, 117306, 01.08.2021.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review