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Pilot scale dilute acid pretreatment of rice straw and fermentable sugar recovery at high solid loadings
DBT-IOC Centre for Advance Bioenergy Research, Research & Development Centre, Indian Oil Corporation Limited, Faridabad, India.
DBT-IOC Centre for Advance Bioenergy Research, Research & Development Centre, Indian Oil Corporation Limited, Faridabad, India.
DBT-IOC Centre for Advance Bioenergy Research, Research & Development Centre, Indian Oil Corporation Limited, Faridabad, India.
DBT-IOC Centre for Advance Bioenergy Research, Research & Development Centre, Indian Oil Corporation Limited, Faridabad, India.
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2016 (English)In: Bioresource Technology, ISSN 0960-8524, E-ISSN 1873-2976, Vol. 224, p. 688-693Article in journal (Other academic) Published
Abstract [en]

The aim of this work was to study the dilute acid pretreatment of rice straw (RS) and fermentable sugar recovery at high solid loadings at pilot scale. A series of pretreatment experiments were performed on RS resulting in >25 wt% solids followed by enzymatic hydrolysis without solid-liquid separation at 20 and 25 wt% using 10 FPU/g of the pretreated residue. The overall sugar recovery including the sugars released in pretreatment and enzymatic hydrolysis was calculated along with a mass balance. Accordingly, the optimized conditions, i.e. 0.35 wt% acid, 162 °C and 10 min were identified. The final glucose and xylose concentrations obtained were 83.3 and 31.9 g/L respectively resulting in total concentration of 115.2 g/L, with a potential to produce >50 g/L of ethanol. This is the first report on pilot scale study on acid pretreatment of RS in a screw feeder horizontal reactor followed by enzymatic hydrolysis at high solid loadings.

Place, publisher, year, edition, pages
2016. Vol. 224, p. 688-693
Keywords [en]
Rice straw; Pretreatment; Pilot scale; Fermentable sugars; Mass balance; Enzymatic hydrolysis
National Category
Bioenergy
Identifiers
URN: urn:nbn:se:hig:diva-26803DOI: 10.1016/j.biortech.2016.11.032ISI: 000395691900082PubMedID: 27864133Scopus ID: 2-s2.0-85006257707OAI: oai:DiVA.org:hig-26803DiVA, id: diva2:1213883
Available from: 2018-06-05 Created: 2018-06-05 Last updated: 2018-06-05Bibliographically approved

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Soam, Shveta

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