Bioethanol production from paperboard mill sludge using acid-catalyzed bio-derived choline acetate ionic liquid pretreatment followed by fermentation process

被引：37
作者：
Farghaly, Ahmed [1 ,5 ]
Elsamadony, Mohamed [3 ]
Ookawara, Shinichi [1 ,4 ]
Tawfik, Ahmed [1 ,2 ]
机构：
[1] Egypt Japan Univ Sci & Technol, Environm Engn Dept, POB 179, Alexandria 21934, Egypt
[2] Natl Res Ctr, Water Pollut Res Dept, PO 12622, Giza, Egypt
[3] Tanta Univ, Fac Engn, Publ Works Engn Dept, Tanta 31521, Egypt
[4] Tokyo Inst Technol, Grad Sch Sci & Engn, Chem Engn Dept, Tokyo 1528552, Japan
[5] Assiut Univ, Fac Engn, Civil Engn Dept, Assiut 71515, Egypt
来源：
ENERGY CONVERSION AND MANAGEMENT | 2017年 / 145卷
关键词：
Lignocellulosic waste; Choline acetate ionic liquid; Enzymatic saccharification; Furans compound; Ethanol production; ENZYMATIC SACCHARIFICATION; DILUTE-ACID; ETHANOL-PRODUCTION; SUGARCANE BAGASSE; LIGNOCELLULOSIC BIOMASS; ANAEROBIC-DIGESTION; HYDROGEN-PRODUCTION; RICE STRAW; OPTIMIZATION; ENHANCEMENT;
D O I：
10.1016/j.enconman.2017.05.004
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Paperboard mill sludge (PMS) composed of cellulose, hemicellulose, lignin and ash contents of 36.72 +/- 2.81, 32.91 +/- 1.75, 22.89 +/- 0.56, and 7.48 +/- 0.39%, respectively. Enzymatic hydrolysis process followed by fermentation of native PMS provided an ethanol yield of 0.36 +/- 0.01 g/L which equivalent to net gain energy of -0.84 +/- 0.03 kJ/g(PMS). Choline acetate ionic liquid [Chol[OAc] IL was extensively used as a solvent for PMS to upgrade the performance. Pretreatment with [Cho][OAc] IL/PMS ratio of 10% (w/w) for 1.0 h, at a temperature of 120 degrees C exhibited hemicellulose and lignin removal efficiency of 5.05 +/- 0.52 and 14.71 +/- 1.22%, respectively with 89.19 +/- 5.62% cellulose recovery. This corresponded to net gain energy of 0.60 +/- 0.04 kJ/g(PMS) based on ethanol yield from enzymatic saccharification process which was quite low due to a limited hemicellulose removal and glucose yield of 24.1 +/- 1.4 g/L. [Chol[OAc] IL/PMS ratio of 10% (w/w) supplemented with 1% (v/v) HCl substantially improved the removal efficiency of hemicellulose (36.38 +/- 4.51%), lignin (17.42 +/- 1.19%) and cellulose (82.17 +/- 4.28%) which provided the maximum net energy of 5.36 +/- 0.30 kJ/g(PMS). (C) 2017 Elsevier Ltd. All rights reserved.
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收藏
页码：255 / 264
页数：10
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