Ex-situ biological CO2 methanation using trickle bed reactor: review and recent advances

Author:

Sposob MichalORCID,Wahid Radziah,Fischer Keno

Abstract

AbstractPower-to-methane technology is a promising solution to facilitate the use of excess variable renewable energy for biomethane production. In this approach, hydrogen produced via electrolysis is used to upgrade raw biogas, which can be subsequently used as fuel or stored in the gas grid. Ex-situ biomethanation is an emerging technology that could potentially replace conventional energy-intensive biogas upgrading methods and allow CO2 utilization for biomethane production. This work provides a comprehensive overview on the current status of ex-situ biomethanation with particular attention to trickle bed reactor. The review includes description of ex-situ biomethanation and summarizes previous works on this topic. The key elements related to operational conditions, efficiency, and microbiology of ex-situ biomethanation using trickle bed reactor are described here. Additionally, the review highlights the technical and economic issues that have to be addressed for future development and large-scale implementation of ex-situ biomethanation.

Funder

Research Council of Norway

Norwegian Institute of Bioeconomy Research

Publisher

Springer Science and Business Media LLC

Subject

Pollution,Waste Management and Disposal,Applied Microbiology and Biotechnology,Environmental Engineering

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