Pretreatment and hydrolysis methods for recovery of fermentable sugars from de-oiled Jatropha waste

Gopalakrishnan Kumar; Biswarup Sen; Chiu Yue Lin

doi:10.1016/j.biortech.2013.02.080

Pretreatment and hydrolysis methods for recovery of fermentable sugars from de-oiled Jatropha waste

Gopalakrishnan Kumar, Biswarup Sen, Chiu Yue Lin

Department of Civil and Environmental Engineering

Research output: Contribution to journal › Article › peer-review

54 Citations (Scopus)

Abstract

The release of reducing sugars (RS) upon various pretreatments and hydrolysis methods from de-oiled Jatropha waste (DJW) was studied. The highest RS concentration of 12.9g/L was observed at 10% enzyme hydrolysis. The next highest RS of 8.0g/L and 7.8g/L were obtained with 10% HCl and 2.5% H₂SO₄, respectively. The NaOH (2.5%), ultrasonication and heat (90°C for 60min) treatments showed the RS concentration of 2.5g/L, 1.1g/L and 2.0g/L, respectively. Autoclave treatment slightly enhanced the sugar release (0.9g/L) compared to no treatment (0.7g/L). Glucose release (11.4g/L) peaked in enzyme hydrolysis. Enzyme treated acid unhydrolysed biomass showed 11.1g/L RS. HCl and H₂SO₄ pretreatment gave maximal xylose (6.89g/L and 6.16g/L, respectively). Combined (acid and enzyme) hydrolysis employed was efficient and its subsequent batch hydrogen fermentation showed a production 3.1L H₂/L reactor.

Original language	English
Pages (from-to)	275-279
Number of pages	5
Journal	Bioresource technology
Volume	145
DOIs	https://doi.org/10.1016/j.biortech.2013.02.080
Publication status	Published - 2013

All Science Journal Classification (ASJC) codes

Bioengineering
Environmental Engineering
Renewable Energy, Sustainability and the Environment
Waste Management and Disposal

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.biortech.2013.02.080

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title = "Pretreatment and hydrolysis methods for recovery of fermentable sugars from de-oiled Jatropha waste",

abstract = "The release of reducing sugars (RS) upon various pretreatments and hydrolysis methods from de-oiled Jatropha waste (DJW) was studied. The highest RS concentration of 12.9g/L was observed at 10% enzyme hydrolysis. The next highest RS of 8.0g/L and 7.8g/L were obtained with 10% HCl and 2.5% H2SO4, respectively. The NaOH (2.5%), ultrasonication and heat (90°C for 60min) treatments showed the RS concentration of 2.5g/L, 1.1g/L and 2.0g/L, respectively. Autoclave treatment slightly enhanced the sugar release (0.9g/L) compared to no treatment (0.7g/L). Glucose release (11.4g/L) peaked in enzyme hydrolysis. Enzyme treated acid unhydrolysed biomass showed 11.1g/L RS. HCl and H2SO4 pretreatment gave maximal xylose (6.89g/L and 6.16g/L, respectively). Combined (acid and enzyme) hydrolysis employed was efficient and its subsequent batch hydrogen fermentation showed a production 3.1L H2/L reactor.",

author = "Gopalakrishnan Kumar and Biswarup Sen and Lin, {Chiu Yue}",

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doi = "10.1016/j.biortech.2013.02.080",

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AU - Sen, Biswarup

AU - Lin, Chiu Yue

PY - 2013

Y1 - 2013

N2 - The release of reducing sugars (RS) upon various pretreatments and hydrolysis methods from de-oiled Jatropha waste (DJW) was studied. The highest RS concentration of 12.9g/L was observed at 10% enzyme hydrolysis. The next highest RS of 8.0g/L and 7.8g/L were obtained with 10% HCl and 2.5% H2SO4, respectively. The NaOH (2.5%), ultrasonication and heat (90°C for 60min) treatments showed the RS concentration of 2.5g/L, 1.1g/L and 2.0g/L, respectively. Autoclave treatment slightly enhanced the sugar release (0.9g/L) compared to no treatment (0.7g/L). Glucose release (11.4g/L) peaked in enzyme hydrolysis. Enzyme treated acid unhydrolysed biomass showed 11.1g/L RS. HCl and H2SO4 pretreatment gave maximal xylose (6.89g/L and 6.16g/L, respectively). Combined (acid and enzyme) hydrolysis employed was efficient and its subsequent batch hydrogen fermentation showed a production 3.1L H2/L reactor.

AB - The release of reducing sugars (RS) upon various pretreatments and hydrolysis methods from de-oiled Jatropha waste (DJW) was studied. The highest RS concentration of 12.9g/L was observed at 10% enzyme hydrolysis. The next highest RS of 8.0g/L and 7.8g/L were obtained with 10% HCl and 2.5% H2SO4, respectively. The NaOH (2.5%), ultrasonication and heat (90°C for 60min) treatments showed the RS concentration of 2.5g/L, 1.1g/L and 2.0g/L, respectively. Autoclave treatment slightly enhanced the sugar release (0.9g/L) compared to no treatment (0.7g/L). Glucose release (11.4g/L) peaked in enzyme hydrolysis. Enzyme treated acid unhydrolysed biomass showed 11.1g/L RS. HCl and H2SO4 pretreatment gave maximal xylose (6.89g/L and 6.16g/L, respectively). Combined (acid and enzyme) hydrolysis employed was efficient and its subsequent batch hydrogen fermentation showed a production 3.1L H2/L reactor.

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JO - Agricultural Wastes

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Pretreatment and hydrolysis methods for recovery of fermentable sugars from de-oiled Jatropha waste

Abstract

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UN SDGs

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