期刊
SCIENCE OF THE TOTAL ENVIRONMENT
卷 792, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.scitotenv.2021.148479
关键词
Greenhouse gas; Carbon capture; Carbon storage; Wastewater
资金
- University of Salerno (FARB) [ORSA11328, 300393FRB18NADDE, 300393FRB17NADDE]
- Inter-University Centre for Prediction and Prevention of Relevant Hazards (Centro Universitario per la Previsione e Prevenzione Grandi Rischi, C.U.G.RI.)
- EU-FEDER [CLU 2017-09]
- Catalan Government [UdG-AG-575]
- Catalan Government (ICREA Academia) [2017-SGR-1552]
- Spanish Ministry of Science [RTI2018-098360-B-I00]
- Department of Science and Technology-Engineering Research for Development and Development (DOST-ERDT)
- University of the Philippines Diliman (UPD)
- regional government of Castilla y Leon [CLU 2017-09]
This review paper identifies the main sources of carbon dioxide emissions in wastewater treatment plants and discusses various technologies for CO2 capture. Different technologies have varying cost-effectiveness and efficiency, calling for further research and development for implementation.
This review paper aims to identify the main sources of carbon dioxide (CO2) emissions from wastewater treatment plants (WWTPs) and highlights the technologies developed for CO2 capture in this milieu. CO2 is emitted in all the operational units of conventional WWTPs and even after the disposal of treated effluents and sludges. CO2 emissions from wastewater can be captured or mitigated by several technologies such as the production of biochar from sludge, the application of constructed wetlands (CWs), the treatment of wastewater in microbial electrochemical processes (microbial electrosynthesis, MES; microbial electrolytic carbon capture, MECC; in microbial carbon capture, MCC), and via microalgal cultivation. Sludge-to-biochar and CW systems showed a high cost-effectiveness in the capture of CO2, while MES, MECC, MCC technologies, and microalgal cultivation offered efficient capture of CO2 with associate production of value-added by-products. At the state-of-the-art, these technologies, utilized for carbon capture and utilization from wastewater, require more research for further configuration, development and cost-effectiveness. Moreover, the integration of these technologies has a potential internal rate of return (IRR) that could equate the operation or provide additional revenue to wastewater management. In the context of circular economy, these carbon capture technologies will pave theway for new sustainable concepts of WWTPs, as an essential element for the mitigation of climate change fostering the transition to a decarbonised economy. (C) 2021 Elsevier B.V. All rights reserved.
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