Cooking with Active Oxygen and Solid Alkali: A Promising Alternative Approach for Lignocellulosic Biorefineries. Issue 20 (9th August 2017)

• Record Type: Journal Article
• Authors: Jiang, Yetao; Zeng, Xianhai; Luque, Rafael; Tang, Xing; Sun, Yong; Lei, Tingzhou; Liu, Shijie; Lin, Lu
• Is Part Of: ChemSusChem. Volume 10:Issue 20(2017)
• Page Start: 3982
• Page End: 3993
• Publication Date: 2017-08-09
• Subjects: active oxygen -- biomass -- fractionation -- lignocellulose -- solid alkali; Green chemistry -- Periodicals; Sustainable engineering -- Periodicals; Chemistry -- Periodicals; Chemical engineering -- Periodicals; 660
• DOI: 10.1002/cssc.201700906
• Languages: English
• ISSNs: 1864-5631

Abstract

Abstract: Lignocellulosic biomass, a matrix of biopolymers including cellulose, hemicellulose, and lignin, has gathered increasing attention in recent years for the production of chemicals, fuels, and materials through biorefinery processes owing to its renewability and availability. The fractionation of lignocellulose is considered to be the fundamental step to establish an economical and sustainable lignocellulosic biorefinery. In this Minireview, we summarize a newly developed oxygen delignification for lignocellulose fractionation called cooking with active oxygen and solid alkali (CAOSA), which can fractionate lignocellulose into its constituents and maintain its processable form. In the CAOSA approach, environmentally friendly chemicals are applied instead of undesirable chemicals such as strong alkalis and sulfides. Notably, the alkali recovery for this process promises to be relatively simple and does not require causticizing or sintering. These features make the CAOSA process an alternative for both lignocellulose fractionation and biomass pretreatment. The advantages and challenges of CAOSA are also discussed to provide a comprehensive perspective with respect to existing strategies. Abstract : Let's get cooking : Cooking with active oxygen and solid alkali is discussed as a promising alternative approach for lignocellulosic biorefineries. In this green and clean cooking process, MgO and active oxygen are used for the fractionation of lignocellulose for the specific valorization of hemicellulose, cellulose, and lignin. NF=nanofiltration, EVAPN=evaporation, XOS=xylooligosaccharide