4.7 Article

Different pretreatment technologies of lignocellulosic biomass for bioethanol production: An overview


Volume 199, Issue -, Pages -


DOI: 10.1016/j.energy.2020.117457


Lignocellulosic biomass; Bioethanol production; Biological pretreatment; Chemical pretreatment; Physical pretreatment


  1. National Research Foundation of Korea (NRF) - Korean government (MSICT) [2019R1A2C2089232]
  2. National Research Foundation of Korea [2019R1A2C2089232] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)

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Regarding the supply of fossil fuels, greenhouse gasses emission, global warming, and increasing fuel price; there is a need to find alternative energy resources, which are renewable, environmentally sustainable, and economically viable. Agro-industrial biomass such as sugarcane bagasse, rice and wheat straw, corn stover, and switchgrass, named as lignocellulosic biomass (LCB) which is inexpensive, abundant, renewable, and provides a unique natural resource for large-scale and cost-effective bio-energy production. During the production of biofuels, pretreatment is a necessary step due to the recalcitrant structure of LCB. Various pretreatment methods were employed with a different mechanism of action, feasibility, and practicability to produce high yield biofuels. Since many years ago, the development of an effective pretreatment method has been challenging due to the existence of barriers and obstacles. Besides, each pretreatment method has its advantage and disadvantage, which should be investigated to obtain a higher yield of bioethanol. In this paper, the recent findings regarding the application of various pretreatment techniques such as chemical, physical and biological methods for bioethanol production from LCBs have been reviewed. The limitations of the mentioned methods based on the existing barriers were explained, and the future recommendations were discussed. (C) 2020 Elsevier Ltd. All rights reserved.


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