Environmental sustainability of bioethanol production from rice straw in India: A review

Singh, Renu; Srivastava, Monika; Shukla, Ashish

doi:10.1016/j.rser.2015.10.005

Cited by 196 publications

(68 citation statements)

References 91 publications

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“…However, significant quantity of rice straw remains unused and is burned in open fields causing serious environmental problems. In India, every year approximately 22289 Gg of rice straw surplus is produced out of which 13915 Gg is estimated to be burnt in the field (Singh et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Alkali pretreatment at ambient temperature: A promising method to enhance biomethanation of rice straw

Shetty

Kshirsagar

Tapadia-Maheshwari

et al. 2017

Bioresource Technology

110

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Section: Introductionmentioning

confidence: 99%

Alkali pretreatment at ambient temperature: A promising method to enhance biomethanation of rice straw

Shetty

Kshirsagar

Tapadia-Maheshwari

et al. 2017

Bioresource Technology

110

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“…Rice straw is one of the abundant lignocellulosic crop residues of the world (Kim and Dale 2004;Rahnama et al 2014;Singh et al 2016). The annual global production of rice is about 526 million metric tons (Kim and Dale 2004).…”

Section: Introductionmentioning

confidence: 99%

“…Its disposal is also a problem due to its bulkiness, slow degradation in the nature, and harboring of diseases. It has been seen that burning rice straw in open fields is a common practice all over the world, which leads to air pollution (Gadde et al 2009;Emtenan et al 2012;Singh et al 2016). An alternative to this is using rice straw as a feedstock for production of cellulosic ethanol (Park et al 2011;Jain et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Enzymatic saccharification of pretreated rice straw by cellulases from Aspergillus niger BK01

et al. 2017

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Alkali-assisted acid pretreated rice straw was saccharified using cellulase from Aspergillus niger BK01. The cellulase production by the fungus was enhanced by parametric optimization using solid-state fermentation conditions. Maximum cellulase production (12.0 U/gds of carboxymethyl cellulase, CMCase) was achieved in 96 h, using 6.0% substrate concentration, 7.5% inoculum concentration, 1:2 solid to liquid ratio, at pH 5.5, and temperature 28°C, by supplementation of the fermentation medium with 0.1% carboxymethylcellulose and 0.1% ammonium nitrate. Characterization of crude cellulases showed that highest CMCase activity was observed at pH 4.8 and temperature 40°C. The CMCase was stable from pH 4.8-5.5 and at a temperature range of 35-50°C. The pretreated biomass was subjected to hydrolysis with the fungal cellulases. The saccharification optimization studies showed that 2% (v/v) enzyme concentration and hydrolysis time of 2.5 h were optimum for maximum yield, i.e, 23.78% sugars and 35.96% saccharification value.

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“…(2) Animal feed supply [44]: Besides cellulose, straw contains hemicellulose and lignin which are palatable to ruminants such as cows. (3) Bio-ethanol production: Rice straw can be used in bio-ethanol production, bringing additional income and allowing sustainable utilization [45]. (4) Returning straw to the field: This solution is an important soil management practice to improve soil fertility.…”

Section: Solutions For Agricultural Strawmentioning

confidence: 99%

Effects of Agricultural Biomass Burning on Regional Haze in China: A Review

Zhao

Zhang

et al. 2017

Atmosphere

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Burning agricultural straw before and/or after harvest is a common farming practice. Regional and extensive agricultural open field straw burning can cause serious air pollution events. This paper looks at the effects of biomass burning emission on regional haze that should be considered in the forecasting of regional haze. It describes the current state of crop residue burning in China, and analyzes the relationship between biomass burning and regional haze in terms of temporal/spatial patterns and chemical composition. Finally, some suggestions/recommendations are proposed for the recycling of agricultural straw to reduce the impact of biomass burning on regional haze and air quality. We suggest that prescribed open burning would be a more suitable solution in China. We hope that this report about biomass burning and regional haze will bring the issue to the attention of governments and other researchers.

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Environmental sustainability of bioethanol production from rice straw in India: A review

Cited by 196 publications

References 91 publications

Alkali pretreatment at ambient temperature: A promising method to enhance biomethanation of rice straw

Alkali pretreatment at ambient temperature: A promising method to enhance biomethanation of rice straw

Enzymatic saccharification of pretreated rice straw by cellulases from Aspergillus niger BK01

Effects of Agricultural Biomass Burning on Regional Haze in China: A Review

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