Design and Economic Evaluation of Cellulose Hydrolysis Processes

Fan, L.T.; Gharpuray, Mahendra Moreshwar; Lee, Yong-Hyun

doi:10.1007/978-3-642-72575-3_5

Cited by 8 publications

(11 citation statements)

References 16 publications

(9 reference statements)

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“…Thus, dilution with water at modest temperatures provides complete and rapid hydrolysis to glucose, with little degradation. In fact, the use of concentrated sulfuric acid is an accepted test method for quantifying the potential glucose content of cellulose (26) and for quantifying the lignin content (14).…”

Section: Methodsmentioning

confidence: 99%

Enzymes, Energy, and the Environment: A Strategic Perspective on the U.S. Department of Energy's Research and Development Activities for Bioethanol

Sheehan

Himmel

1999

Biotechnology Progress

186

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For well over one hundred years, researchers around the world have pursued ways to make ethanol from biomass such as wood, grasses, and waste materials. To distinguish it from ethanol made from starch and sugars in traditional agricultural crops, we refer to ethanol made from biomass as "bioethanol." The effort to develop bioethanol technology gained significant momentum in the late 1970s as a result of the energy crises that occurred in that decade. This article briefly reviews the broader history of bioethanol technology development. With this as a background, we focus our attention on the strategic thinking behind the U.S. Department of Energy's Bioethanol Program, which envisions remarkable advances in cellulase enzyme research and as the basis for significant future process cost reductions.

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Section: Methodsmentioning

confidence: 99%

Enzymes, Energy, and the Environment: A Strategic Perspective on the U.S. Department of Energy's Research and Development Activities for Bioethanol

Sheehan

Himmel

1999

Biotechnology Progress

186

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“…The conversion of renewable lignocellulosic substrates into simple fermentable sugars has always been a promising way for the production of ethanol, which happens to be one of the most important biofuel (Fan et al 1987;Wood and Saddler 1988). As the growing demand of the fuel is expected to increase in the future, the researchers and the policy makers all over the world have focused their attention towards the exploitation of the other cellulosic substrates available for their effective conversion into ethanol.…”

Section: Introductionmentioning

confidence: 99%

Biological pretreatment of sugarcane trash for its conversion to fermentable sugars

Singh

Gupta

Tiwari

et al. 2007

World J Microbiol Biotechnol

156

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Pretreatment of lignocellulosic biomasses, the first step in their conversion to utilizable molecules requires very high energy (steam and electricity), corrosion resistant high-pressure reactors and high temperatures. These severe conditions not only add to the cost component of the entire process but also lead to the loss of sugars to the side reactions. Microbial pretreatments have been reported to be associated with reducing the cost factors as well as the severities of the reactions. Eight bioagents, including fungi and bacteria, were screened for their pretreatment effects on sugarcane trash. They narrowed down the C:N ratio of trash from 108:1 to a varying range of approximately 42:1 to 60:1.The maximum drop in C:N ratio of 61% was observed using Aspergillus terreus followed by Cellulomonas uda (52%) and Trichoderma reesei and Zymomonas mobilis (49%). The bioagents helped in degradation of sugarcane trash by production of cellulases, the maximum being produced by A. terreus, (12 fold) followed by C. uda (10 fold), Cellulomonas cartae (9 fold) and Bacillus macerans (8 fold). The microbial pretreatment of trash rendered the easy accessibility of sugars for enzymatic hydrolysis, which can be directed for production of alcohol.

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“…Some factors influence the glucose yield and the byproducts, such as temperature, reaction time (Taherzadeh et al, 1997), and degree of polymerization of cellulose (Kosaric et al, 1983). These variables are not identical in different types of lignocellulosic materials, and each particular lignocellulosic material has its own optimal treatment parameters (Fan et al, 1987;Taherzadeh and Karimi, 2007). Therefore, it is extremely necessary to further research the acid hydrolysis of SSB residue.…”

Section: Introductionmentioning

confidence: 99%

Conversion of Sweet Sorghum Bagasse Residue to Glucose by Dilute Acid Hydrolysis

Zhang

Zhao

et al. 2015

Energy Sources, Part A: Recovery, Utilization, and Environmenta

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In the present work, hydrolysis of sweet sorghum bagasse residue using dilute acid was investigated. The sweet sorghum bagasse residue was from pretreatment. Process parameters investigated include reactor temperature, reaction time, and acid concentration in order to find suitable conditions for hydrolysis of the cellulose fraction. The effects of dilute acid hydrolysis were assessed by glucose yield and decomposition products concentration. The highest yield of glucose, 70.10%, was found at the temperature of 170°C, acid concentration of 1.0% (w/w), and a reaction time of 10 min. Meanwhile, 0.99 g/L of acetic acid, 0.22 g/L of furfural, 0.73 g/L of hydro-xymethyl furfural, and 1.60 g/L of levulinic acid were obtained under these conditions, which concluded that the decomposition of glucose was slight and confirmed the selectivity of this dilute acid hydrolysis of the sweet sorghum bagasse residue. The present work aims to take full advantage of the sweet sorghum bagasse residue and obtain glucose solutions with a low concentration of growth inhibitors.

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Design and Economic Evaluation of Cellulose Hydrolysis Processes

Cited by 8 publications

References 16 publications

Enzymes, Energy, and the Environment: A Strategic Perspective on the U.S. Department of Energy's Research and Development Activities for Bioethanol

Enzymes, Energy, and the Environment: A Strategic Perspective on the U.S. Department of Energy's Research and Development Activities for Bioethanol

Biological pretreatment of sugarcane trash for its conversion to fermentable sugars

Conversion of Sweet Sorghum Bagasse Residue to Glucose by Dilute Acid Hydrolysis

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