Microwave heating and hydrolysis of rubber wood biomass in ionic liquids

Darji, Dazylah; Alias, Yatimah; Som, Fauzi Mohd; Abd-Razak, Nurul Hainiza

doi:10.1002/jctb.4516

Cited by 24 publications

(12 citation statements)

References 31 publications

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“…Meanwhile, task specific ILs with dual properties (i.e. solvent and catalyst) have currently been explored in various reactions replacing traditional mineral acids such as sulfuric and hydrochloric acids . Acidic ILs such as 1‐ n ‐butyl‐3‐methylimidazolium hydrogen sulfate ([BMIm]HSO 4 ) and 1‐ n ‐butyl‐3‐methylimidazolium methylsulfate ([BMIm]MeSO 4 ) have already successfully delignified and depolymerized several lignocellulosic biomasses .…”

Section: Introductionmentioning

confidence: 99%

“…solvent and catalyst) have currently been explored in various reactions replacing traditional mineral acids such as sulfuric and hydrochloric acids. 9 Acidic ILs such as 1-n-butyl-3-methylimidazolium hydrogen sulfate ([BMIm]HSO 4 ) and 1-n-butyl-3-methylimidazolium methylsulfate ([BMIm]MeSO 4 ) have already successfully delignified and depolymerized several lignocellulosic biomasses. 10 However, most of the ILs used in biomass pretreatment are mono-cationic and are susceptible to chemical and thermal degradation.…”

Section: Introductionmentioning

confidence: 99%

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Macroalgal biomass hydrolysis using dicationic acidic ionic liquids

Malihan

Mittal

Nisola

et al. 2016

J of Chemical Tech & Biotech

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BACKGROUND Macroalgae has high potential as a bio‐fuel feedstock due to its high carbohydrate content. Conventional aqueous systems require a huge amount of energy to catalyze depolymerization and hydrolysis of macroalgae. Recently various task‐specific ionic liquids (ILs) successfully depolymerized different biomasses, but were thermally unstable. A variety of dicationic acidic ILs (DAILs) connected by oligo‐ethylene glycol (EG) chains bearing hydrogen sulfate (HSO4−) anions were synthesized with better thermal stability and utilized in hydrolysis of macroalgal biomass, Gelidium amansii. RESULTS The structures of DAILs were confirmed by 1H and 13C NMR as well as FT‐IR. EG‐linker chain lengths and dicationic structure increased the thermal stability of DAILs and influenced their catalytic performance for G. amansii hydrolysis. DAILs linked with short oligo‐EG chains afforded higher sugar yields and exhibited faster hydrolysis rates compared with those linked by long oligo‐EG chains (i.e. PEG400 and PEG600). A maximum sugar yield of 67.45 wt% was recovered from G. amansii using [Tri‐EG‐(MIm)2] 2HSO4 DAIL, after 3 min at 120 °C. CONCLUSION The synthesized DAILs showed dual properties as catalyst and reaction medium for hydrolysis of macroalgae in solvent‐less conditions. Shorter oligo‐EG chain linked DAILs exhibited faster reaction rates with higher sugar yields. © 2016 Society of Chemical Industry

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Macroalgal biomass hydrolysis using dicationic acidic ionic liquids

Malihan

Mittal

Nisola

et al. 2016

J of Chemical Tech & Biotech

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“…For example, 85% of the original lignin was extracted from maple wood floor after pretreatment with [emim][OAc] for 70 h at 90 °C ). Others reported studies have also showed that [OAc] IL show good performance for pretreatment of biomass such as energy cane bagasse (Qiu and Aita 2013), cypress wood (Moniruzzaman and Ono 2013), and rubber wood (Darji et al 2015).…”

Section: Quantification Of Lignin Contentmentioning

confidence: 94%

Effect of Ionic Liquids on Oil Palm Biomass Fiber Dissolution

et al. 2016

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Ionic liquids (ILs) were used in the dissolution of oil palm biomass, primarily empty fruit bunches (EFB), oil palm fronds (OPF), and oil palm trunks (OPT). These ILs acted as alternative solvents that could dissolve biopolymer molecules up to 5 wt.%. The IL, [emim][OAc] was the best solvent, dissolving EFB, OPF, and OPT of 99%, 100%, and 97%, respectively, at 100 ⁰C and 16 h. The lignin content of the regenerated oil palm solids for all biomass was quantified and showed significant reduction up to 35%; fiber length was also reduced as the heating time increased after IL dissolution. Also, the effect of ILs on the different parts of oil palm biomass fibers was thoroughly studied. The lignin content was quantified.

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“…Similar observation has been reported on the irradiation pretreatment of rubberwood. Darji et al [66] compared the rubberwood structure before and after pretreatment and found that most of the fibrous in the rubberwood lost and disappeared after the pretreatment process.…”

Section: Surface Morphology and Chemical Structurementioning

confidence: 99%

Irradiation Pretreatment of Tropical Biomass and Biofiber for Biofuel Production

Kassim¹,

Khalil²,

Serri³

et al. 2016

Radiation Effects in Materials

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Interest on biofuel production from biomass and biofiber has gain great attention globally because these materials are abundant, inexpensive, renewable, and sustainable. Generally, the conversion of biomass and biofiber to biofuel involves several processes including biomass production, pretreatment, hydrolysis, and fermentation. Selecting the most efficient pretreatment is crucial to ensure the success of biofuel production since pretreatment has been reported to contribute substantial portion on the production cost. The main goal of the pretreatment is to enhance digestibility of the biomass and biofiber, and to increase sugar production prior to fermentation process. To date, several pretreatment methods have been introduced to pretreat biomass and biofiber including irradiation. This book chapter reviews and discusses different leading irradiation pretreatment technologies along with their mechanism involved during pretreatment of various tropical biomass and biofiber. This chapter also reviews the effect of irradiation pretreatment on the biomass and biofiber component, which could assist the enzymatic saccharification process.

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Microwave heating and hydrolysis of rubber wood biomass in ionic liquids

Cited by 24 publications

References 31 publications

Macroalgal biomass hydrolysis using dicationic acidic ionic liquids

Macroalgal biomass hydrolysis using dicationic acidic ionic liquids

Effect of Ionic Liquids on Oil Palm Biomass Fiber Dissolution

Irradiation Pretreatment of Tropical Biomass and Biofiber for Biofuel Production

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