Carbon, iron, and polymer-based conductive materials for improving methane production in anaerobic wastewater treatment systems : A review on their direct interspecific electron transfer mechanism

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

14 Scopus Citations
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Author(s)

  • Eldon R. Rene
  • Weifang Ma
  • Qian Hu
  • Bin Qiu

Detail(s)

Original languageEnglish
Article number127703
Journal / PublicationFuel
Volume342
Online published27 Feb 2023
Publication statusPublished - 15 Jun 2023

Abstract

Organic compounds in wastewater have a high potential to be converted to (bio)methane (CH4) via anaerobic processes for energy recovery. Facilitating direct interspecies electron transfer (DIET) between microorganisms with the addition of conductive materials, as opposed to the conventional anaerobic biological process, has been viewed as an efficient strategy for boosting the efficiency of CH4 production. In recent years, extensive research has been conducted on the performance, mechanisms, and technical uses of conductive materials, such as carbon, iron and polymer-based materials in anaerobic wastewater treatment systems. In this review, the properties of conductive materials have been comprehensively reviewed and summarized, along with their application strategies to enhance CH4 production. In addition, the paper focuses on the methane production mechanism in anaerobic bioreactors, in the presence of carbon, iron, and polymer-based materials. The DIET theory employed for methane synthesis and the involvement of various organic wastes including ethanol, butyrate, propionate, and complex organic compounds are also elaborated upon. The prospective future research directions were also identified and stated in this review. © 2023 Elsevier Ltd

Research Area(s)

  • Anaerobic treatment, CH4 production, Conductive materials, DIET, Organic wastewater

Citation Format(s)

Carbon, iron, and polymer-based conductive materials for improving methane production in anaerobic wastewater treatment systems: A review on their direct interspecific electron transfer mechanism. / Sun, Jiaji; Rene, Eldon R.; He, Yuhe et al.
In: Fuel, Vol. 342, 127703, 15.06.2023.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review