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Recent Advances in Carbon Dioxide Conversion: A Circular Bioeconomy Perspective

Department of Chemical Engineering, Yuan Ze University, Taoyuan City 32003, Taiwan
Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City 811213, Taiwan
Department of Chemical Engineering, National Cheng Kung University, Tainan City 701, Taiwan
Department of Civil and Environmental Engineering, University of Delaware, Newark, DE 19716, USA
Department of Chemical and Materials Engineering, College of Engineering, Tunghai University, Taichung City 407224, Taiwan
School of Environmental Engineering, University of Seoul, Seoul 02504, Korea
Author to whom correspondence should be addressed.
Academic Editors: Marzena Smol, Maria Włodarczyk-Makuła, Joanna Duda and Ludwig Hermann
Sustainability 2021, 13(12), 6962;
Received: 9 April 2021 / Revised: 16 June 2021 / Accepted: 16 June 2021 / Published: 21 June 2021
(This article belongs to the Special Issue Strategies toward a Green Deal and Circular Economy)
Managing the concentration of atmospheric CO2 requires a multifaceted engineering strategy, which remains a highly challenging task. Reducing atmospheric CO2 (CO2R) by converting it to value-added chemicals in a carbon neutral footprint manner must be the ultimate goal. The latest progress in CO2R through either abiotic (artificial catalysts) or biotic (natural enzymes) processes is reviewed herein. Abiotic CO2R can be conducted in the aqueous phase that usually leads to the formation of a mixture of CO, formic acid, and hydrogen. By contrast, a wide spectrum of hydrocarbon species is often observed by abiotic CO2R in the gaseous phase. On the other hand, biotic CO2R is often conducted in the aqueous phase and a wide spectrum of value-added chemicals are obtained. Key to the success of the abiotic process is understanding the surface chemistry of catalysts, which significantly governs the reactivity and selectivity of CO2R. However, in biotic CO2R, operation conditions and reactor design are crucial to reaching a neutral carbon footprint. Future research needs to look toward neutral or even negative carbon footprint CO2R processes. Having a deep insight into the scientific and technological aspect of both abiotic and biotic CO2R would advance in designing efficient catalysts and microalgae farming systems. Integrating the abiotic and biotic CO2R such as microbial fuel cells further diversifies the spectrum of CO2R. View Full-Text
Keywords: CO2 conversions; abiotic processes; algal farming; biorefinery; circular bioeconomy CO2 conversions; abiotic processes; algal farming; biorefinery; circular bioeconomy
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MDPI and ACS Style

Wang, T.; Dong, C.-D.; Lin, J.-Y.; Chen, C.-W.; Chang, J.-S.; Kim, H.; Huang, C.-P.; Hung, C.-M. Recent Advances in Carbon Dioxide Conversion: A Circular Bioeconomy Perspective. Sustainability 2021, 13, 6962.

AMA Style

Wang T, Dong C-D, Lin J-Y, Chen C-W, Chang J-S, Kim H, Huang C-P, Hung C-M. Recent Advances in Carbon Dioxide Conversion: A Circular Bioeconomy Perspective. Sustainability. 2021; 13(12):6962.

Chicago/Turabian Style

Wang, TsingHai, Cheng-Di Dong, Jui-Yen Lin, Chiu-Wen Chen, Jo-Shu Chang, Hyunook Kim, Chin-Pao Huang, and Chang-Mao Hung. 2021. "Recent Advances in Carbon Dioxide Conversion: A Circular Bioeconomy Perspective" Sustainability 13, no. 12: 6962.

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