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Wastewater treatment meets artificial photosynthesis: Solar to green fuel production, water remediation and carbon emission reduction

Wastewater treatment meets artificial photosynthesis: Solar to green fuel production, water... Current wastewater treatment (WWT) is energy-intensive and leads to vast CO2 emissions. Chinese pledge of “double carbon” target encourages a paradigm shift from fossil fuels use to renewable energy harvesting during WWT. In this context, hybrid microbial photoelectrochemical (MPEC) system integrating microbial electrochemical WWT with artificial photosynthesis (APS) emerges as a promising approach to tackle water-energy-carbon challenges simultaneously. Herein, we emphasized the significance to implement energy recovery during WWT for achieving the carbon neutrality goal. Then, we elucidated the working principle of MPEC and its advantages compared with conventional APS, and discussed its potential in fulfilling energy self-sustaining WWT, carbon capture and solar fuel production. Finally, we provided a strategy to judge the carbon profit by analysis of energy and carbon fluxes in a MPEC using several common organics in wastewater. Overall, MPEC provides an alternative of WWT approach to assist carbon-neutral goal, and simultaneously achieves solar harvesting, conversion and storage.[graphic not available: see fulltext] http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Frontiers of Environmental Science & Engineering Springer Journals

Wastewater treatment meets artificial photosynthesis: Solar to green fuel production, water remediation and carbon emission reduction

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References (12)

Publisher
Springer Journals
Copyright
Copyright © Higher Education Press 2022
ISSN
2095-2201
eISSN
2095-221X
DOI
10.1007/s11783-022-1536-5
Publisher site
See Article on Publisher Site

Abstract

Current wastewater treatment (WWT) is energy-intensive and leads to vast CO2 emissions. Chinese pledge of “double carbon” target encourages a paradigm shift from fossil fuels use to renewable energy harvesting during WWT. In this context, hybrid microbial photoelectrochemical (MPEC) system integrating microbial electrochemical WWT with artificial photosynthesis (APS) emerges as a promising approach to tackle water-energy-carbon challenges simultaneously. Herein, we emphasized the significance to implement energy recovery during WWT for achieving the carbon neutrality goal. Then, we elucidated the working principle of MPEC and its advantages compared with conventional APS, and discussed its potential in fulfilling energy self-sustaining WWT, carbon capture and solar fuel production. Finally, we provided a strategy to judge the carbon profit by analysis of energy and carbon fluxes in a MPEC using several common organics in wastewater. Overall, MPEC provides an alternative of WWT approach to assist carbon-neutral goal, and simultaneously achieves solar harvesting, conversion and storage.[graphic not available: see fulltext]

Journal

Frontiers of Environmental Science & Engineering – Springer Journals

Published: Apr 1, 2022

Keywords: Wastewater treatment; Artificial photosynthesis; Microbial photoelectrochemical (MPEC) system; Carbon neutral; Renewable energy

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