skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Can Multiple Ions in an Ionic Liquid Improve the Biomass Pretreatment Efficacy?

Journal Article · · ACS Sustainable Chemistry & Engineering
 [1]; ORCiD logo [2]; ORCiD logo [3]; ORCiD logo [3];  [3];  [4];  [3]; ORCiD logo [5]; ORCiD logo [3]
  1. Joint BioEnergy Institute, Emeryville, CA (United States)
  2. Joint BioEnergy Institute, Emeryville, CA (United States); ; Sandia National Lab. (SNL-CA), Livermore, CA (United States)
  3. Joint BioEnergy Institute, Emeryville, CA (United States); Sandia National Lab. (SNL-CA), Livermore, CA (United States)
  4. Univ. of California, Berkeley, CA (United States)
  5. Joint BioEnergy Institute, Emeryville, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

we report over the last few decades, efforts to transition the global production of fuels and chemicals toward renewable carbon feedstocks have accelerated. A large portion of these efforts have focused on valorization of one of the most abundant renewable carbon sources, lignocellulose. Pretreatment of lignocellulose is the first critical step in this process. In this study, novel ionic liquid (IL) systems consisting of multiple ions known to be effective at biomass pretreatment were tested on woody and grassy biomass. Molecular simulations and experimental results established the synergistic advantages of combining specific individual components in these systems. For pine (woody) biomass, pretreatment with the combination of imidazolium, cholinium, acetate, and lysinate ions achieved 80% glucose and 70% xylose yields at high biomass loading. For sorghum biomass, an IL system comprising cholinium, lysinate, and palmitate ions not only enabled a 98% glucose yield but was also found to be biocompatible in a one-pot configuration, producing the biofuel precursor bisabolene using an engineered strain of the yeast Rhodosporidium toruloides.

Research Organization:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Sandia National Lab. (SNL-CA), Livermore, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1848065
Journal Information:
ACS Sustainable Chemistry & Engineering, Vol. 9, Issue 12; ISSN 2168-0485
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

References (25)

Predictive screening of ionic liquids for dissolving cellulose and experimental verification journal January 2016
Transforming biomass conversion with ionic liquids: process intensification and the development of a high-gravity, one-pot process for the production of cellulosic ethanol journal January 2016
Mixing ionic liquids – “simple mixtures” or “double salts”? journal January 2014
The hierarchical structure and mechanics of plant materials journal June 2012
Current perspective on pretreatment technologies using lignocellulosic biomass: An emerging biorefinery concept journal March 2020
Impact of ionic liquid type on the structure, morphology and properties of silk-cellulose biocomposite materials journal March 2018
Ionic liquid based pretreatment of lignocellulosic biomass for enhanced bioconversion journal May 2020
NHC in Imidazolium Acetate Ionic Liquids: Actual or Potential Presence? journal August 2018
Analytical applications and physicochemical properties of ionic liquid-based hybrid materials: A review journal April 2019
Ionic liquid pretreatment of lignocellulosic biomass with ionic liquid–water mixtures journal January 2011
Understanding the role of co-solvents in the dissolution of cellulose in ionic liquids journal January 2014
Wheat Bran Pretreatment by Room Temperature Ionic Liquid-Water Mixture: Optimization of Process Conditions by PLS-Surface Response Design journal August 2019
Understanding pretreatment efficacy of four cholinium and imidazolium ionic liquids by chemistry and computation journal January 2014
Ionic liquids and deep eutectic solvents for lignocellulosic biomass fractionation journal January 2017
Characterization of ionic liquid pretreated plant cell wall for improved enzymatic digestibility journal February 2018
Comparison of lignin and cellulose solubilities in ionic liquids by COSMO-RS analysis and experimental validation journal May 2012
Ionic liquids: Promising green solvents for lignocellulosic biomass utilization journal June 2017
Empirical Evidence for the Potential Climate Benefits of Decarbonizing Light Vehicle Transport in the U.S. with Bioenergy from Purpose-Grown Biomass with and without BECCS journal February 2020
One-pot integrated biofuel production using low-cost biocompatible protic ionic liquids journal January 2017
Lignocellulosic biomass to bioethanol, a comprehensive review with a focus on pretreatment journal November 2013
Two Herbicides in a Single Compound: Double Salt Herbicidal Ionic Liquids Exemplified with Glyphosate, Dicamba, and MCPA journal June 2017
Multiscale modelling strategies and experimental insights for the solvation of cellulose and hemicellulose in ionic liquids journal March 2018
Lignocellulosic biomass to biofuels and biochemicals: A comprehensive review with a focus on ethanol organosolv pretreatment technology journal September 2018
Structural features affecting the enzymatic digestibility of pine wood pretreated with ionic liquids: Understanding Digestibility of IL Pretreated Pine journal September 2015
Novel renewable ionic liquids as highly effective solvents for pretreatment of rice straw biomass by selective removal of lignin journal April 2012