Improvement of acetone, butanol and ethanol production from rice straw by acid and alkaline pretreatments

Moradi, Farzad; Amiri, Hamid; Soleimanian‐Zad, Sabihe; Ehsani, Mohammad Reza; Karimi, Keikhosro

doi:10.1016/j.fuel.2013.05.011

Cited by 126 publications

(49 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The glucan contents were increased by 10.6, 25.8, and 53.1% by the pretreatment for pine, berry, and poplar, respectively. Similar increases in glucan content, caused by concentrated phosphoric acid pretreatment were also reported for sweet sorghum bagasse (26.4%) (Goshadrou et al 2011) and rice straw (25.2) (Moradi et al 2013). The increase in glucan content can be explicated by material loss due to the dissolution of other carbohydrates during the pretreatment.…”

Section: Effect Of the Pretreatment On The Composition Of Woodssupporting

confidence: 76%

“…Hence, the removal of hemicellulosic carbohydrates was the most important change caused by the pretreatment, accounting for up to 37, 62, and 71% removal for pine, poplar, and berry, respectively. Decrease in the hemicellulosic carbohydrates, due to concentrated phosphoric acid pretreatment, was also reported for sweet sorghum bagasse (Goshadrou et al 2011), corn stover (Zhu et al 2009), Napier grass (Takata et al 2013), and rice straw (Moradi et al 2013). In comparison to hardwoods, hemicellulose removal was lower for the softwood, most probably due to the softwoods higher recalcitrant structure (Taherzadeh and Karimi 2008).…”

Section: Effect Of the Pretreatment On The Composition Of Woodsmentioning

confidence: 56%

“…This method is widely used for improvement of ethanol production from lignocelluloses (Wirawan et al 2012;Moradi et al 2013); however, to our knowledge, no previous work has been carried out to investigate the effect of this promising pretreatment technology on biogas production from lignocelluloses.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Improvement of Solid-State Biogas Production from Wood by Concentrated Phosphoric Acid Pretreatment

Mirmohamadsadeghi¹,

Karimi²,

Horváth³

2016

BioResources

Self Cite

View full text Add to dashboard Cite

Cellulose solvent-and organic solvent-based lignocellulose fractionation (COSLIF) has been repeatedly shown to be a cost-effective and promising process to modify the structure of different lignocelluloses. It has been repeatedly reported to improve enzymatic hydrolysis and ethanol production from different lignocelluloses. In this study, COSLIF was used to improve biomethane production from pine (softwood), poplar (soft hardwood), and berry (hard hardwood) via solid state anaerobic digestion (SSAD). Feed to inoculum (F/I) ratio, which plays a major role in SSAD, was set to 3, 4, and 5. After the pretreatment, 39, 33, and 24% higher methane yield from pine was achieved for F/I ratios of 3, 4, and 5, respectively. However, the methane yield from the hardwoods was not improved by the pretreatment, which was related to overloading of the digester. Compositional analysis showed considerable reduction in hemicellulose and lignin content by the pretreatment. Structural changes in the woods, before and after the pretreatment, were examined by X-ray diffractometer and scanning electron microscopy. The results showed that the crystallinity of cellulose was decreased and accessible surface area was drastically increased by the pretreatment.

show abstract

Section: Effect Of the Pretreatment On The Composition Of Woodssupporting

confidence: 76%

Section: Effect Of the Pretreatment On The Composition Of Woodsmentioning

confidence: 56%

See 1 more Smart Citation

Improvement of Solid-State Biogas Production from Wood by Concentrated Phosphoric Acid Pretreatment

Mirmohamadsadeghi¹,

Karimi²,

Horváth³

2016

BioResources

Self Cite

View full text Add to dashboard Cite

show abstract

“…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%

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

Amiri

Karimi

2015

Bioprocess Biosyst Eng

Self Cite

View full text Add to dashboard Cite

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.

show abstract

“…Different treatments including steam explosion Wang and Chen 2011), alkaline with NaOH (Gao et al 2012;Moradi et al 2013), alkaline peroxide (Wang and Chen 2011;Cheng et al 2012), dilute acid (Gottumukkala et al 2013), phosphoric acid (Moradi et al 2013), and ethanol organosolv ) pretreatments have been used prior to enzymatic hydrolysis for the production of cellulosic hydrolysate used for ABE production (Table 8.7).…”

Section: Advances In Abe Production From the Cellulosic Hydrolysatementioning

confidence: 99%

Biobutanol from Lignocellulosic Wastes

Amiri

Karimi

Bankar

et al. 2015

Biofuel and Biorefinery Technologies

Self Cite

View full text Add to dashboard Cite

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.

show abstract

Improvement of acetone, butanol and ethanol production from rice straw by acid and alkaline pretreatments

Cited by 126 publications

References 17 publications

Improvement of Solid-State Biogas Production from Wood by Concentrated Phosphoric Acid Pretreatment

Improvement of Solid-State Biogas Production from Wood by Concentrated Phosphoric Acid Pretreatment

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

Biobutanol from Lignocellulosic Wastes

Contact Info

Product

Resources

About