TY - JOUR
T1 - Ionic liquid based pretreatment of lignocellulosic biomass for enhanced bioconversion
AU - Usmani, Zeba
AU - Sharma, Minaxi
AU - Gupta, Pratishtha
AU - Karpichev, Yevgen
AU - Gathergood, Nicholas
AU - Bhat, Rajeev
AU - Gupta, Vijai Kumar
PY - 2020/5
Y1 - 2020/5
N2 - Lignocellulosic biomass is the most plentiful renewable biomolecule and an alternative bioresource for the production of biofuels and biochemicals in biorefineries. But biomass recalcitrance is a bottleneck in their usage, thus necessitating their pretreatment for hydrolysis. Most pretreatment technologies, result in toxic by-products or have lower yield. Ionic liquids (ILs) have successfully advanced as ‘greener and recyclable’ alternatives to volatile organic solvents for lignocellulosic biomass dissolution. This review covers recent developments made in usage of IL-based techniques with focus on biomass breakdown mechanism, process parameter design, impact of cation and anion groups, and the advantageous impact of ILs on the subsequent processing of the fractionated biomass. Progress and barriers for large-scale commercial usage of ILs in emerging biorefineries were critically evaluated using the principles of economies of scale and green chemistry in an environmentally sustainable way.
AB - Lignocellulosic biomass is the most plentiful renewable biomolecule and an alternative bioresource for the production of biofuels and biochemicals in biorefineries. But biomass recalcitrance is a bottleneck in their usage, thus necessitating their pretreatment for hydrolysis. Most pretreatment technologies, result in toxic by-products or have lower yield. Ionic liquids (ILs) have successfully advanced as ‘greener and recyclable’ alternatives to volatile organic solvents for lignocellulosic biomass dissolution. This review covers recent developments made in usage of IL-based techniques with focus on biomass breakdown mechanism, process parameter design, impact of cation and anion groups, and the advantageous impact of ILs on the subsequent processing of the fractionated biomass. Progress and barriers for large-scale commercial usage of ILs in emerging biorefineries were critically evaluated using the principles of economies of scale and green chemistry in an environmentally sustainable way.
KW - Biorefinery
KW - Enzymatic hydrolysis
KW - Ionic liquids
KW - Lignocellulosic biomass
KW - Pretreatment
UR - http://www.scopus.com/inward/record.url?scp=85079513472&partnerID=8YFLogxK
U2 - 10.1016/j.biortech.2020.123003
DO - 10.1016/j.biortech.2020.123003
M3 - Review article
C2 - 32081446
AN - SCOPUS:85079513472
SN - 0960-8524
VL - 304
JO - Bioresource Technology
JF - Bioresource Technology
M1 - 123003
ER -
