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    Lignocellulosic biomass can be considered as one of the largest sources for the production of renewable biofuels (bioethanol). It involves an enzymatic treatment capable of ensuring the depolymerization of cellulose into fermentable sugars, followed by the production of ethanol by appropriate bacteriological fermentation. Proper destruction of the compact natural structure of the biomass would allow an interesting intensification of the operation. Among the most prominent technical approaches, the steam explosion (SE) is the most famous. However, this high pressure-high temperature process implies too high energy consumption while leading to the generation of many non-fermentable molecules. In recent years, many studies have proposed the use of the Instant Controlled Pressure-Drop (DIC) texturing pretreatment as an effective alternative to SE for ethanol production. Therefore, in this manuscript, we propose to compare and discuss the fundamental principles and experimental results of these two operations, as presented in the relevant literature.


    Neila Smichi, Yosra Messaoudi, Karim Allaf, Mohamed Gargouri. Steam explosion (SE) and instant controlled pressure drop (DIC) as thermo-hydro-mechanical pretreatment methods for bioethanol production. Bioprocess and biosystems engineering. 2020 Jun;43(6):945-957

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    PMID: 32025810

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