Organosolv pretreatment of rice straw for efficient acetone, butanol, and ethanol production

Amiri, Hamid; Karimi, Keikhosro; Zilouei, Hamid

doi:10.1016/j.biortech.2013.11.038

Cited by 240 publications

(110 citation statements)

References 27 publications

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“…The chips were partly ball-milled and screened to achieve the wood powder with a size between 177 and 833 lm (20-80 mesh) for the bench-scale pretreatment [8]. The dry weight content of the samples was measured by drying in a convection oven at 105°C until a constant weight.…”

Section: Raw Materials and Enzymesmentioning

confidence: 99%

“…However, these pretreatments suffer from high-energy demands for recovery of the chemical agents and having environmental pollutant wastewaters [13]. Recently, for improvement of ABE production from rice straw, organosolv pretreatment was suggested and promising results were obtained [8].…”

Section: Introductionmentioning

confidence: 99%

“…Agricultural residues such as wheat straw [2], corn fiber [3], corn stover [4,5], switchgrass [4], sweet sorghum bagasse [6], and rice straw [7,8] have been evaluated as suitable substrates for ABE production. Besides, woody materials are widely available and feasible source with some advantages compared with agricultural residues for biofuel production in the near term [9].…”

Section: Introductionmentioning

confidence: 99%

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Improvement of acetone, butanol, and ethanol production from woody biomass using organosolv pretreatment

Amiri

Karimi

2015

Bioprocess Biosyst Eng

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A suitable pretreatment is a prerequisite of efficient acetone-butanol-ethanol (ABE) production from wood by Clostridia. In this study, organosolv fractionation, an effective pretreatment with ability to separate lignin as a co-product, was evaluated for ABE production from softwood pine and hardwood elm. ABE production from untreated woods was limited to the yield of 81 g ABE/kg wood and concentration of 5.5 g ABE/L. Thus, the woods were pretreated with aqueous ethanol at elevated temperatures before hydrolysis and fermentation to ABE by Clostridium acetobutylicum. Hydrolysis of pine and elm pretreated at 180 °C for 60 min resulted in the highest sugar concentrations of 16.8 and 23.2 g/L, respectively. The hydrolysate obtained from elm was fermented to ABE with the highest yield of 121.1 g/kg and concentration of 11.6 g/L. The maximum yield of 87.9 g/kg was obtained from pine pretreated for 30 min at 150 °C. Moreover, structural modifications in the woods were investigated and related to the improvements. The woody biomasses are suitable feedstocks for ABE production after the organosolv pretreatment. Effects of the pretreatment conditions on ABE production might be related to the reduced cellulose crystallinity, reduced lignin and hemicellulose content, and lower total phenolic compounds in the hydrolysates.

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Section: Raw Materials and Enzymesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Improvement of acetone, butanol, and ethanol production from woody biomass using organosolv pretreatment

Amiri

Karimi

2015

Bioprocess Biosyst Eng

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“…Additionally, solvent recovery requires minimal energy. Amiri et al (2014) reported the use of aqueous ethanol containing 1% w/w of sulphuric acid for pre-treating rice straw with a solid-liquid ratio of 1:8. The temperature of the mixture was maintained at 150-180°C for 30-60 minutes.…”

Section: Organosolv Pre-treatmentmentioning

confidence: 99%

A comprehensive review on pre-treatment strategy for lignocellulosic food industry waste: Challenges and opportunities

Ravindran¹,

Jaiswal²

2016

Bioresource Technology

472

156

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“…Although the inhibitors can be removed by the detoxification processes, sugar loss through these processes is commonly unavoidable, leading to additional capital investment (Qureshi et al 2010;Amiri et al 2014). Therefore, various efforts are being made to find pretreatment methods to obtain hydrolysates with less inhibitors for efficient ABE production.…”

Section: Fermentation Of Hydrolysates From Both Cellulose and Hemicelmentioning

confidence: 99%

Biobutanol from Lignocellulosic Wastes

Amiri

Karimi

Bankar

et al. 2015

Biofuel and Biorefinery Technologies

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The perceived inability to economically provide conventional petroleum to meet the growing energy demands is facing a diverse and broad set of challenges. The major technical and commercial drawbacks of the existing biofuels (bioethanol or biodiesel) have prompted the continuing development of more advanced biofuels such as biobutanol. Acetone-butanol-ethanol (ABE) fermentation is an old process which recently attracted new interests for the production of butanol as an advanced biofuel. Efficient use of low cost lignocellulosic wastes as a carbon source for ABE fermentation can be a proper approach for the economical production of biobutanol. This chapter focuses on the utilization of lignocellulosic materials in ABE fermentation process. It explains the ABE fermentation process especially the processes that were economically used in the Soviet Union, China, and South Africa in the twentieth century. It also summarizes different technologies that have been suggested for the utilization of lignocelluloses for biobutanol production.

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Organosolv pretreatment of rice straw for efficient acetone, butanol, and ethanol production

Cited by 240 publications

References 27 publications

Improvement of acetone, butanol, and ethanol production from woody biomass using organosolv pretreatment

Improvement of acetone, butanol, and ethanol production from woody biomass using organosolv pretreatment

A comprehensive review on pre-treatment strategy for lignocellulosic food industry waste: Challenges and opportunities

Biobutanol from Lignocellulosic Wastes

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