Enhancement of enzymatic hydrolysis and lignin removal of bagasse using photocatalytic pretreatment

7th International Conference on Environment and Industrial Innovation

生态环境科学;工业技术

Pattanapibul, P.^1 ; Chuangchote, S.^1 ; Laosiripojana, N.^1 ; Champreda, V.^2 ; Kaewsaenee, J.^3

Joint Graduate School of Energy and Environment, Centre of Excellence on Energy Technology and Environment, King Mongkut's University of Technology Thonburi (KMUTT), 126 Pracha Uthit Rd., Bangmod, Thung Khru, Bangkok

10140, Thailand^1

National Center for Genetic Engineering and Biotechnology, 113 Phahonyothin Rd., Klong Luang, Pathumthani

12120, Thailand^2

Department of Physics, King Mongkut's University of Technology Thonburi (KMUTT), 126 Pracha Uthit Rd., Bangmod, Thung Khru, Bangkok

10140, Thailand^3

关键词: Additive composition;    Batch reactions;    Biological resistance;    Enzymatic digestibility;    Lignocellulosic material;    Optimum conditions;    Photo-catalytic;    Pretreatment process;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/67/1/012003/pdf
DOI  :  10.1088/1755-1315/67/1/012003

来源: IOP

【 摘 要 】

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 25°C. 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.