Perspectives in the production of bioethanol: A review of sustainable methods, technologies, and bioprocesses.

The main objective of this review paper is analyzes perspectives of manufacturing bioethanol via biotechnology, using sustainable management. Two categories are emphasized: (i) agro-industrial valuation, which represents alternative methods for bioethanol production, and (ii) Agro-industrial Techniques and Infrastructure Analysis. Future of biofuels is addressed in terms of applicability and production methods. Authors perform a systematic literature review to characterize the present state of knowledge on ethanol production. The study is conducted from a decision-making standpoint, so that they identify several problems (subcategories) in bioethanol production. The section on technology and industrial infrastructure focuses on advances in biorefineries, revealing technical and economic limitations, and also the gap between sustainable production policies and environmental impact. The second part of the paper presents the evolution of the industrial sector toward technological innovation and adoption of complex bio-production methods for clean energy production. This review mostly covers results reported over the past decade, with a special emphasis on papers published recently, from 2010 to 2021, therefore, it can serve for extended future research that would address additional specific categories. One concludes that the industrial sector must promote bioethanol production efficiently and sustainably, harmonized with the society and the environment. Sustainable production points to alternative energy sources based on cellulosic materials and third generation materials derived from algal biomass. • Chemical processes in the agro-industrial production sector include clean technologies. • Critical gaps for biofuel production contain factors that must be related to industrial processes and uncertain economic cost. • Technological integration of 1G and 2G bioethanol production can reduce operating costs and investment risks. • Biorefinery models use various biomass feedstocks, and they integrate 1st/2nd generation technological processes. [ABSTRACT FROM AUTHOR]