Life cycle environmental benefits of recycling waste liquor and chemicals in production of lignocellulosic bioethanol.
Bioresour Technol
; 390: 129855, 2023 Dec.
Article
em En
| MEDLINE
| ID: mdl-37858801
ABSTRACT
In recent decades, numerous bioconversion processes and techniques have been developed to utilize lignocellulosic biomass as feedstock in the production of bio-based fuels and materials. However, waste treatment, an important sub-system, is seldom considered in the life cycle assessment of lignocellulose derived products. This study comprehensively investigated the environmental impacts of bioethanol and electricity cogeneration from sugarcane bagasse, with a focus on recycling techniques adopted in waste treatment. A life cycle assessment indicated that high recycle rate of black liquor, acid and waste washing water can substantially reduce the consumption of fresh water, related chemicals and energy by 70-80%. Environmental impacts relating to global warming, acidification potential and primary energy demand can be decreased by 5-10 times or even entirely eliminated. These study outcomes demonstrate significant environmental benefits of integrating waste recycling techniques into lignocellulose biorefinery process, providing a solid foundation for future industrial development.
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Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Celulose
/
Saccharum
Idioma:
En
Ano de publicação:
2023
Tipo de documento:
Article