TY - JOUR
T1 - Effect of various pretreatment methods on sugar and ethanol production from cellulosic water hyacinth
AU - Rezania, Shahabaldin
AU - Alizadeh, Hossein
AU - Park, Junboum
AU - Md Din, Mohd Fadhil
AU - Darajeh, Negisa
AU - Ebrahimi, Shirin Shafiei
AU - Saha, Bidyut Baran
AU - Kamyab, Hesam
N1 - Funding Information:
This research was supported by a grant (2016R1D1A1A02937267) provided by Korean National Research Foundation (KNRF) which is part of project individual basic science & engineering research program (SGER).
Publisher Copyright:
© 2019 North Carolina State University.
PY - 2019/2/1
Y1 - 2019/2/1
N2 - Effects of acid, alkali, ionic liquid (IL), and microwave-alkali pretreatments on cellulosic water hyacinth (WH) were investigated based on the total reducing sugars (TRS) and ethanol production. For the first time, IL pretreatment with (1-Ethyl-3-methylimidazolium acetate ([EMIM][Ac]) was used for WH, and the efficiency was compared with the other methods. Cellulase and Saccharomyces cerevisiae were fermented together for 72 h. Based on the results, all pretreatment methods effectively increased the sugar content as well as the ethanol yield. Untreated WH had 25 ± 1.5 mg/g of TRS, which was increased to 157 ± 8.2 mg/g, 95 ± 3.1 mg/g, 51 ± 4.2 mg/g, and 45 ± 2.6 mg/g via alkali, microwave-alkali, acid, and IL pretreatments, respectively. The highest TRS level of 402 mg/g was obtained in 24 h and 6.2 ± 0.4 g/L of ethanol in 48 h of fermentation with the alkali-treated WH. The ethanol production was followed by other treatment methods of WH in the order of microwave-alkali, acid, and IL. The results indicated that the ethanol production from WH was related to the type of pretreatment as well as the TRS production.
AB - Effects of acid, alkali, ionic liquid (IL), and microwave-alkali pretreatments on cellulosic water hyacinth (WH) were investigated based on the total reducing sugars (TRS) and ethanol production. For the first time, IL pretreatment with (1-Ethyl-3-methylimidazolium acetate ([EMIM][Ac]) was used for WH, and the efficiency was compared with the other methods. Cellulase and Saccharomyces cerevisiae were fermented together for 72 h. Based on the results, all pretreatment methods effectively increased the sugar content as well as the ethanol yield. Untreated WH had 25 ± 1.5 mg/g of TRS, which was increased to 157 ± 8.2 mg/g, 95 ± 3.1 mg/g, 51 ± 4.2 mg/g, and 45 ± 2.6 mg/g via alkali, microwave-alkali, acid, and IL pretreatments, respectively. The highest TRS level of 402 mg/g was obtained in 24 h and 6.2 ± 0.4 g/L of ethanol in 48 h of fermentation with the alkali-treated WH. The ethanol production was followed by other treatment methods of WH in the order of microwave-alkali, acid, and IL. The results indicated that the ethanol production from WH was related to the type of pretreatment as well as the TRS production.
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U2 - 10.15376/biores.14.1.592-606
DO - 10.15376/biores.14.1.592-606
M3 - Article
AN - SCOPUS:85061328490
SN - 1930-2126
VL - 14
SP - 592
EP - 606
JO - BioResources
JF - BioResources
IS - 1
ER -