Study on the decomposition of lignocellulosic biomass and subjecting it to alcoholic fermentation

Abstract

a b s t r a c tThe decomposition of lignocellulosic raw material included: mechanical grinding of plant biomass, delignification (removal of lignin e this process was conducted in alkaline environment) and detoxification process (removal of alcoholic fermentation inhibitory compounds).The study on producing ethanol from corn straw was based on SSF method which involved conducting simultaneous enzymatic hydrolysis of cellulose and fermentation of obtained saccharides.Based on the study of corn straw alcoholic fermentation it was determined that the way of preparing the raw material in the initial stage of simultaneous saccharification and fermentation, significantly influences the improvement of fermentation yield.In comparison with an attempt in which biomass detoxification process was not implemented, the attempt with detoxification resulted in gaining higher fermentation yield and in lowering the content of aldehydes, methanol and furfural in the produced spirit.Moreover, in the attempts in which detoxification of raw material was used, better actual speed, productivity and the yield of alcoholic fermentation of corn straw was noted. The conducted detoxification in the process of lignocellulosic biomass decomposition improved fermentation yield.

Effect of alkaline pretreatment on the preparation of regenerated lignocellulose fibers from bamboo stem

“…Effect of alkaline pretreatment on the properties of raw materials Alkaline treatment has been considered as a traditional and efficient way to disrupt the lignin-carbohydrate matrix, and has been extensively used to remove hemicelluloses, lignin, and/or cellulose from lignocellulosic biomass (Eronen et al 2009;Kotarska et al 2015;Park and Kim 2012;Zheng et al 2014). Alkaline pre-treatment at 60°C for 4 h has been considered as an effective procedure to break the rigid structure of lignocelluloses and changes the polymorphic lattice of cellulose (Viell 2014).…”

Technical possibilities of bioethanol production from coffee pulp: a renewable feedstock

“…However, there are several problems associated with the use of lignocellulosic feedstock into bioethanol, such as availability, quality, consistency, and transport (Kurian et al 2013;Sukumara et al 2015). Alternative, cheap, or waste feedstocks such as agricultural residues offer potential solutions to the sustainability challenges (Chandra et al 2012;de Jong and Gosselink 2014;Hughes et al 2014;Kotarska et al 2015). World coffee production could potentially supply substantial lowcost sustainable biofuel feedstock.…”

Renewable energy from biogas with reduced carbon dioxide footprint: Implications of applying different plant configurations and operating pressures

“…For example, Miscanthus involving a CO 2 footprint credit associated with SOC sequestration during the cultivation period of this well rooted multi-year energy crop [66]. However, biomass derived from Miscanthus has high proportion of lignocellulose and consequently reduced carbon conversion efficiency is obtained [67], at least in conventional anaerobic digestion (AD) systems. New AD systems are needed to overcome this barrier and more efficiently utilise carbon and bioenergy generated by Miscanthus.…”