Enhancement of enzymatic hydrolysis and lignin removal of bagasse using photocatalytic pretreatment
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Author list: Pattanapibul P., Chuangchote S., Laosiripojana N., Champreda V., Kaewsaenee J.
Publisher: IOP Publishing
Publication year: 2017
Volume number: 67
Issue number: 1
ISSN: 1755-1307
eISSN: 1755-1315
Languages: English-Great Britain (EN-GB)
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Abstract
Pretreatment for reduction of biological resistance in a lignocellulosic material, i.e. bagasse, for enzymatic hydrolysis and fermentation was investigated. Photocatalyst (TiO2) was used as an additive composition to assist this pretreatment process. Reaction time was varied (24, 48, and 72 h) to find the optimum condition for the pretreatment, while concentration of solvent (NaOH, H2O2, or NH4OH), biomass to solvent ratio, and weight ratio of catalyst to bagasse were fixed at 2 M, 1:20 g/ml (typically, solvent = 150 ml), and 1:5, respectively. Batch reaction temperature was at 25ฐC. After the pretreatment, the enzymatic digestibility of pretreated bagasse was carried out to find the sugar yield. Hydrolysis of pretreated bagasse with photocatalyst show higher sugar yields than the conventional reactions without photocatalyst. The maximum yields of sugars (541.03 mg glucose and 192.79 mg pentose) were obtained at the longest reaction time. ฉ Published under licence by IOP Publishing Ltd.
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