Pretreatment strategies for enhanced biogas production from lignocellulosic biomass. (April 2020)

• Record Type: Journal Article
• Authors: Abraham, Amith; Mathew, Anil K.; Park, Hyojung; Choi, Okkyoung; Sindhu, Raveendran; Parameswaran, Binod; Pandey, Ashok; Park, Jung Han; Sang, Byoung-In
• Is Part Of: Bioresource technology. Volume 301(2020)
• Publication Date: 2020-04
• Subjects: Anaerobic digestion -- Pretreatment -- Biogas -- Lignocellulose; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2019.122725
• Languages: English
• ISSNs: 0960-8524

Abstract

Graphical abstract: Highlights: Lignocellulosic biomass is a potential source of renewable energy. Anaerobic digestion is an efficient process for sustainable energy production. Recalcitrance of lignocellulosic biomass is a major challenge for biogas/methane production. Different pretreatment strategies can improve biogas production from LC feedstock. Abstract: The inclusion of a pretreatment step in anaerobic digestion processes increases the digestibility of lignocellulosic biomass and enhances biogas yields by promoting lignin removal and the destruction of complex biomass structures. The increase in surface area enables the efficient interaction of microbes or enzymes, and a reduction in cellulose crystallinity improves the digestion process under anaerobic conditions. The pretreatment methods may vary based on the type of the lignocellulosic biomass, the nature of the subsequent process and the overall economics of the process. An improved biogas production by 1200% had been reported when ionic liquid used as pretreatment strategy for anaerobic digestion. The different pretreatment techniques used for lignocellulosic biomasses are generally grouped into physical, chemical, physicochemical, and biological methods. These four modes of pretreatment on lignocellulosic biomass and their impact on biogas production process is the major focus of this review article.