Current developments and challenges of green technologies for the valorization of liquid, solid, and gaseous wastes from sugarcane ethanol production.

Autor: Sydney EB; Universidade Tecnológica Federal do Paraná, Câmpus Ponta Grossa, Bioprocess Engineering and Biotechnology Department, Ponta Grossa, Paraná, Brazil., Carvalho JC; Federal University of Paraná, Department of Bioprocess Engineering and Biotechnology, Centro Politécnico, 81531-990 Curitiba, Paraná, Brazil., Letti LAJ; Federal University of Paraná, Department of Bioprocess Engineering and Biotechnology, Centro Politécnico, 81531-990 Curitiba, Paraná, Brazil., Magalhães AI Jr; Federal University of Paraná, Department of Bioprocess Engineering and Biotechnology, Centro Politécnico, 81531-990 Curitiba, Paraná, Brazil., Karp SG; Federal University of Paraná, Department of Bioprocess Engineering and Biotechnology, Centro Politécnico, 81531-990 Curitiba, Paraná, Brazil., Martinez-Burgos WJ; Federal University of Paraná, Department of Bioprocess Engineering and Biotechnology, Centro Politécnico, 81531-990 Curitiba, Paraná, Brazil., Candeo ES; Universidade Tecnológica Federal do Paraná, Câmpus Ponta Grossa, Bioprocess Engineering and Biotechnology Department, Ponta Grossa, Paraná, Brazil., Rodrigues C; Federal University of Paraná, Department of Bioprocess Engineering and Biotechnology, Centro Politécnico, 81531-990 Curitiba, Paraná, Brazil., Vandenberghe LPS; Federal University of Paraná, Department of Bioprocess Engineering and Biotechnology, Centro Politécnico, 81531-990 Curitiba, Paraná, Brazil., Neto CJD; Federal University of Paraná, Department of Bioprocess Engineering and Biotechnology, Centro Politécnico, 81531-990 Curitiba, Paraná, Brazil., Torres LAZ; Universidade Tecnológica Federal do Paraná, Câmpus Ponta Grossa, Bioprocess Engineering and Biotechnology Department, Ponta Grossa, Paraná, Brazil., Medeiros ABP; Federal University of Paraná, Department of Bioprocess Engineering and Biotechnology, Centro Politécnico, 81531-990 Curitiba, Paraná, Brazil., Woiciechowski AL; Federal University of Paraná, Department of Bioprocess Engineering and Biotechnology, Centro Politécnico, 81531-990 Curitiba, Paraná, Brazil., Soccol CR; Federal University of Paraná, Department of Bioprocess Engineering and Biotechnology, Centro Politécnico, 81531-990 Curitiba, Paraná, Brazil. Electronic address: soccol@ufpr.br.
Jazyk: angličtina
Zdroj: Journal of hazardous materials [J Hazard Mater] 2021 Feb 15; Vol. 404 (Pt A), pp. 124059. Date of Electronic Publication: 2020 Sep 28.
DOI: 10.1016/j.jhazmat.2020.124059
Abstrakt: The sugarcane industry is one of the largest in the world and processes huge volumes of biomass, especially for ethanol and sugar production. These processes also generate several environmentally harmful solid, liquid, and gaseous wastes. Part of these wastes is reused, but with low-added value technologies, while a large unused fraction continues to impact the environment. In this review, the classic waste reuse routes are outlined, and promising green and circular technologies that can positively impact this sector are discussed. To remain competitive and reduce its environmental impact, the sugarcane industry must embrace technologies for bagasse fractionation and pyrolysis, microalgae cultivation for both CO 2 recovery and vinasse treatment, CO 2 chemical fixation, energy generation through the anaerobic digestion of vinasse, and genetically improved fermentation yeast strains. Considering the technological maturity, the anaerobic digestion of vinasse emerges as an important solution in the short term. However, the greatest environmental opportunity is to use the pure CO 2 from fermentation. The other opportunities still require continued research to reach technological maturity. Intensifying the processes, the exploration of driving-change technologies, and the integration of wastes through biorefinery processes can lead to a more sustainable sugarcane processing industry.
(Copyright © 2020 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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