Recent Advances in the Application of Inorganic Salt Pretreatment for Transforming Lignocellulosic Biomass into Reducing Sugars.
Currently, the transformation of lignocellulosic biomass into value-added products such as reducing sugars is garnering attention worldwide. However, efficient hydrolysis is usually hindered by the recalcitrant structure of the biomass. Many pretreatment technologies have been developed to overcome the recalcitrance of lignocellulose such that the components can be reutilized more effectively to enhance sugar recovery. Among all of the utilized pretreatment methods, inorganic salt pretreatment represents a more novel method and offers comparable sugar recovery with the potential for reducing costs. The use of inorganic salt also shows improved performance when it is integrated with other pretreatment technologies. Hence, this paper is aimed to provide a detailed overview of the current situation for lignocellulosic biomass and its physicochemical characteristics. Furthermore, this review discusses some recent studies using inorganic salt for pretreating biomass and the mechanisms involved during the process. Finally, some prospects and challenges using inorganic salt are highlighted.
Yu-Loong
YL
Loow
Ta Yeong
TY
Wu
Khang Aik
KA
Tan
Yung Shen
YS
Lim
Lee Fong
LF
Siow
Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia , 43600 UKM Bangi, Selangor Darul Ehsan, Malaysia.
Jamaliah Md
JM
Jahim
Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia , 43600 UKM Bangi, Selangor Darul Ehsan, Malaysia.
Abdul Wahab
AW
Mohammad
Department of Chemical Engineering, Faculty of Engineering, University of Malaya , 50603 Kuala Lumpur, Malaysia.
Wen Hui
WH
Teoh
D001709:Biotechnology / Q000379:methods / Q000639:trends*; D006868:Hydrolysis; D008031:Lignin / Q000737:chemistry*; D009005:Monosaccharides / Q000737:chemistry*; D010084:Oxidation-Reduction; D012965:Sodium Chloride / Q000737:chemistry
D009005:Monosaccharides; C036909:lignocellulose; D012965:Sodium Chloride; D008031:Lignin
biomass valorization; cellulose; hemicellulose; inorganic salt; lignin; sustainability; waste reuse