Using low carbon footprint high-pressure carbon dioxide in bioconversion of aspen branch waste for sustainable bioethanol production

被引：16

作者：

Wu, Yingji ^{[1
]}

Ge, Shengbo ^{[1
]}

Xia, Changlei ^{[1
,2
]}

Cai, Liping ^{[1
]}

Mei, Changtong ^{[1
]}

Sonne, Christian ^{[3
]}

Park, Young-Kwon ^{[4
]}

Kim, Young-Min ^{[5
]}

Chen, Wei-Hsin ^{[6
,7
,8
]}

Chang, Jo-Shu ^{[7
,9
]}

Lam, Su Shiung ^{[2
,10
,11
]}

机构：

[1] Nanjing Forestry Univ, Coll Mat Sci & Engn, Coinnovat Ctr Efficient Proc & Utilizat Forestry, Nanjing 210037, Jiangsu, Peoples R China

[2] Anhui Juke Graphene Technol Co Ltd, Bozhou 233600, Anhui, Peoples R China

[3] Aarhus Univ, Arctic Res Ctr ARC, Dept Biosci, Frederiksborgvej 399,POB 358, DK-4000 Roskilde, Denmark

[4] Univ Seoul, Sch Environm Engn, Seoul 02504, South Korea

[5] Daegu Univ, Dept Environm Engn, Gyongsan 38453, South Korea

[6] Natl Cheng Kung Univ, Dept Aeronaut & Astronaut, Tainan 701, Taiwan

[7] Tunghai Univ, Coll Engn, Dept Chem & Mat Engn, Taichung 407, Taiwan

[8] Natl Chin Yi Univ Technol, Dept Mech Engn, Taichung 411, Taiwan

[9] Natl Cheng Kung Univ, Dept Chem Engn, Tainan 701, Taiwan

[10] Univ Malaysia Terengganu, Inst Trop Aquaculture & Fisheries AKUATROP, Pyrolysis Technol Res Grp, Kuala Nerus 21030, Malaysia

[11] Henan Agr Univ, Henan Prov Engn Res Ctr Biomass Value Added Prod, Zhengzhou 450002, Henan, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2020年 / 313卷

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

Separate hydrolysis-fermentation (SHF); Biomass; Carbon dioxide (CO2); Yeast fermentation; Biofuel; ENZYMATIC-HYDROLYSIS; SEPARATE HYDROLYSIS; ETHANOL-PRODUCTION; LIGNOCELLULOSIC BIOMASS; PRETREATMENT; CELLULOSE; FERMENTATION; BIOFUELS; WATER; WOOD;

D O I：

10.1016/j.biortech.2020.123675

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

An innovative approach was developed by incorporating high-pressure CO2 into the separate hydrolysis-fermentation of aspen leftover branches, aiming to enhance the bioethanol production efficiency. The high-pressure CO2 significantly increased the 72-h enzymatic hydrolysis yield of converting aspen into glucose from 53.8% to 82.9%. The hydrolysis process was performed with low enzyme loading (10 FPU g(-1) glucan) with the aim of reducing the cost of fuel bioethanol production. The ethanol yield from fermentation of the hydrolyzed glucose using yeast (Saccharomyces cerevisiae) was 8.7 g L-1, showing increment of 10% compared with the glucose control. Techno-economic analysis indicated that the energy consumption of fuel bioethanol production from aspen branch chips was reduced by 35% and the production cost was cut 44% to 0.615 USD L-1, when 68 atm CO2 was introduced into the process. These results furtherly emphasized the low carbon footprint of this sustainable energy production approach.

引用

页数：9

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