In-situ detoxification strategies to boost bioalcohol production from lignocellulosic biomass

Cleitiane da Costa Nogueira, Carlos Eduardo de Araújo Padilha, Júlia Maria de Medeiros Dantas, Fábio Gonçalves Macêdo de Medeiros, Alexandre de Araújo Guilherme, Domingos Fabiano de Santana Souza and Everaldo Silvino dos Santos

Renewable Energy, 2021, vol. 180, issue C, 914-936

Abstract: The bioalcohol production (ethanol and butanol) from lignocellulosic biomass has some techno-economic limitations nowadays. Detoxification technologies can efficiently remove fermentation inhibitors (such as furan aldehydes, aliphatic acids, and phenolic compounds) to increase the bioalcohol titers. However, the addition of more steps before fermentation increases the complexity of the production scheme and reduces the profit margin. Process intensification concepts have been disseminated as a critical factor for the success of biotechnological processes, including bioalcohol production. Thus, this review discusses the main inhibitors from lignocellulosic biomass and the in-situ technologies used to minimize the yeast inhibition in hydrolysates and slurries. In-situ detoxification strategies involve different fundamentals, but they have the unanimity of allowing fermentation to be carried out concurrently. They are usually based on the establishment of a microbial consortium as well as the addition of reducing agents, polymers, solvents and adsorbents. Also, in-situ product recovery methods have been developed to minimize energy consumption in downstream processing.

Keywords: Ethanol; Butanol; Inhibitor; Hydrolysate; Fermentation (search for similar items in EconPapers)
Date: 2021
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Citations: View citations in EconPapers (4)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:180:y:2021:i:c:p:914-936

DOI: 10.1016/j.renene.2021.09.012

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