Cellulose pretreatment with 1-n-butyl-3-methylimidazolium chloride for solid acid-catalyzed hydrolysis

Kim, Soo Jin; Dwiatmoko, Adid Adep; Choi, Jae Wook; Suh, Young Woong; Suh, Dong Jin; Oh, Moonhyun

doi:10.1016/j.biortech.2010.06.047

Cited by 90 publications

(56 citation statements)

References 29 publications

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“…Economic improvements have been reported via interventions such as the use of thermophilic cellulase in high solvent concentrations [205]; application of acid catalysts such as sulfonated carbon materials (sugar catalysts) [206], HCl [175,187], and Nafion NR50 [207]; inclusion of chemicals such as NH 4 OH-H 2 O 2 [208] and electrolyte solution [181]; direct (without cellulase) conversion of pretreated substrates to biofuels in consolidated bioprocessing [209]; the reuse of solvent in several batches [169]. Notwithstanding other process enhancements, it is necessary that lignin-derived products are efficiently utilized to improve process economics.…”

Section: Drawbacks and Process Modificationsmentioning

confidence: 99%

Chemical Pretreatment Methods for the Production of Cellulosic Ethanol: Technologies and Innovations

Bensah

Mensah

2013

International Journal of Chemical Engineering

267

105

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Pretreatment of lignocellulose has received considerable research globally due to its influence on the technical, economic and environmental sustainability of cellulosic ethanol production. Some of the most promising pretreatment methods require the application of chemicals such as acids, alkali, salts, oxidants, and solvents. Thus, advances in research have enabled the development and integration of chemical-based pretreatment into proprietary ethanol production technologies in several pilot and demonstration plants globally, with potential to scale-up to commercial levels. This paper reviews known and emerging chemical pretreatment methods, highlighting recent findings and process innovations developed to offset inherent challenges via a range of interventions, notably, the combination of chemical pretreatment with other methods to improve carbohydrate preservation, reduce formation of degradation products, achieve high sugar yields at mild reaction conditions, reduce solvent loads and enzyme dose, reduce waste generation, and improve recovery of biomass components in pure forms. The use of chemicals such as ionic liquids, NMMO, and sulphite are promising once challenges in solvent recovery are overcome. For developing countries, alkalibased methods are relatively easy to deploy in decentralized, low-tech systems owing to advantages such as the requirement of simple reactors and the ease of operation.

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Section: Drawbacks and Process Modificationsmentioning

confidence: 99%

Chemical Pretreatment Methods for the Production of Cellulosic Ethanol: Technologies and Innovations

Bensah

Mensah

2013

International Journal of Chemical Engineering

267

105

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“…For example, cellooligomers with a DP value around 30 were precipitated in 90% yield by the addition of water after microcrystalline cellulose was hydrolyzed in ionic liquids for 1.5 h. Another general strategy is to use ionic liquids as pretreatment agents to facilitate the hydrolysis process (vide ante). For example, pretreatment of cellulose with [Bmim]Cl led to loosen crystalline cellulose through partial transformation of cellulose I to cellulose II, which could facilitate the attack of proton during the subsequent hydrolysis over Nafion NR50 (Kim et al 2010). …”

Section: Acid Hydrolysis Of (Ligno)cellulosementioning

confidence: 99%

Selective Breakdown of (Ligno)cellulose in Ionic Liquids

Xie¹,

Zhao²

2011

Ionic Liquids: Applications and Perspectives

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“…Ionic liquids (ILs) have recently received a great deal of research interest (Kamiya et al 2008;Zhao et al 2009;Li et al 2009;Kim et al 2010;Dee and Bell 2011) because of their ability to dissolve lignocellulose to facilitate the depolymerization of the cellulose. However, the relatively high costs limit their practical application for biomass pretreatment (Zheng et al 2009;Kuo and Lee 2009;Brodeur et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Fenton Depolymerization of Cellulosic Biomass in Modified Cuprammonium Solution

Cao¹,

Zhao²

2015

BioResources

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This preliminary study developed a novel cellulose pretreatment method for cost-effective cellulosic utilization using a modified cuprammonium solution as a solvent to dissolve cellulose followed by molecular oxygen/Fenton depolymerization. The modified cuprammonium solution is composed of cuprammonium solution and a special catalyst that could efficiently enhance cellulosic oxygen sensitivity and therefore improve cellulosic depolymerization. The molecular oxygen depolymerization and Fenton depolymerization of cellulosic biomass dissolved in the modified cuprammonium solution were investigated. The results demonstrate that the Fenton reaction efficiently depolymerized the cellulose dissolved in the modified cuprammonium solution and reached the monomers with no loss of organic carbon, and almost all the cellulose maintained solubility without reagglomeration after cuprammonium was removed. Molecular oxygen oxidation reduced the cellulose average degree of polymerization (DP) to approximately 4 with less cost, and the oxygen pre-oxidation increased the H2O2 utilization in the Fenton depolymerization and remarkably reduced the H2O2 requirement.

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Cellulose pretreatment with 1-n-butyl-3-methylimidazolium chloride for solid acid-catalyzed hydrolysis

Cited by 90 publications

References 29 publications

Chemical Pretreatment Methods for the Production of Cellulosic Ethanol: Technologies and Innovations

Chemical Pretreatment Methods for the Production of Cellulosic Ethanol: Technologies and Innovations

Selective Breakdown of (Ligno)cellulose in Ionic Liquids

Fenton Depolymerization of Cellulosic Biomass in Modified Cuprammonium Solution

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