(AGENPARL) – LONDON (UNITED KINGDOM), gio 17 settembre 2020
In the time of rapidly depleting petroleum resources, world-wide food shortages, and solid waste problems, it is imperative to promote dedicated research into using a proper pretreatment technique utilizing regeneratable raw materials such as lignocellulosic biomass. However, not all pretreatment techniques are a viable alternative for industrial practice. Pretreatment is an important step to upgrade different kinds of lignocellulosic biomass into more valuable products, including biofuels and bio-based industrial chemicals. Most of the pretreatment techniques have their limitations or weaknesses, including, high operational costs and temperature, toxicity and corrosive to the instrument, etc., while, some other pretreatment methods such as biological and plasma are a green procedure that also can be used to alter the physical and chemical properties of the lignocellulosic materials. Although, our present understanding is still low and not much research has been done to guarantee which pretreatment method is the reliable alternative, the combination of different pretreatment methods could be a good strategy to overcome the limitations of each approach. This review presents an overview of different pretreatment methods of lignocellulosic biomass to increase the rate and the degree of cellulose hydrolysis and subsequent processing step as well as future perspectives.
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