Approach to an efficient pretreatment method for rice straw by deep eutectic solvent for high saccharification efficiency

被引：37

作者：

Maibam, Premeshworii Devi ^{[1
]}

Goyal, Arun ^{[1
,2
]}

机构：

[1] Indian Inst Technol Guwahati, Sch Energy Sci & Engn, Gauhati 781039, Assam, India

[2] Indian Inst Technol Guwahati, Dept Biosci & Bioengn, Carbohydrate Enzyme Biotechnol Lab, Gauhati 781039, Assam, India

来源：

BIORESOURCE TECHNOLOGY | 2022年 / 351卷

关键词：

Rice straw; Deep eutectic solvent; Delignification; Pretreatment efficiency; Saccharification efficiency; LIGNOCELLULOSIC BIOMASS; BIOETHANOL PRODUCTION; LIGNIN;

D O I：

10.1016/j.biortech.2022.127057

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Deep eutectic solvent comprising choline chloride (ChCl) and acetic acid (AA) was used for rice straw (RS) pretreatment. Effect of ChCl: AA molar ratio, time and temperature on lignin removal and retainment of total carbohydrate content (TCC) in pretreatment process were evaluated by central composite design (CCD) approach. The pretreatment temperature and molar ratio of AA to ChCl played a significant role in delignification. The optimized conditions for RS pretreatment were 1:3.59 (ChCl:AA molar ratio), 126 degrees C and 150 min. ChCl:AA pretreated RS (CApRS) gave 83.1% delignification, 679 mg/g(CApRS) TCC and 83.7% pretreatment efficiency. CApRS contained enriched cellulose content, 0.73 g/g(CApRS) as compared with 0.43 g/g(raw RS) in raw RS. CApRS showed 31% higher crystallinity index, 17-fold higher surface area than raw RS. The morphological study of CApRS displayed porous surface. Saccharification of CApRS by commercial cellulase gave total reducing sugar of 18.8 g/L in hydrolysate with saccharification efficiency, 92.2%.

引用

页数：8

共 42 条

[1] Recent Trends in the Pretreatment of Lignocellulosic Biomass for Value-Added Products [J].

Baruah, Julie ;

Nath, Bikash Kar ;

Sharma, Ritika ;

Kumar, Sachin ;

Deka, Ramesh Chandra ;

Baruah, Deben Chandra ;

Kalita, Eeshan .

FRONTIERS IN ENERGY RESEARCH, 2018, 6

[2] Green and Bio-Based Solvents [J].

Calvo-Flores, Francisco G. ;

Monteagudo-Arrebola, Maria Jos ;

Dobado, Jose A. ;

Isac-Garcia, Joaquin .

TOPICS IN CURRENT CHEMISTRY, 2018, 376 (03)

[3] Pretreatment efficiency and structural characterization of rice straw by an integrated process of dilute-acid and steam explosion for bioethanol production [J].

Chen, Wen-Hua ;

Pen, Ben-Li ;

Yu, Ching-Tsung ;

Hwang, Wen-Song .

BIORESOURCE TECHNOLOGY, 2011, 102 (03) :2916-2924

[4] Application of deep eutectic solvents in biomass pretreatment and conversion [J].

Chen, Yu ;

Mu, Tiancheng .

GREEN ENERGY & ENVIRONMENT, 2019, 4 (02) :95-115

[5] Molecular motion and ion diffusion in choline chloride based deep eutectic solvents studied by 1H pulsed field gradient NMR spectroscopy [J].

D'Agostino, Carmine ;

Harris, Robert C. ;

Abbott, Andrew P. ;

Gladden, Lynn F. ;

Mantle, Mick D. .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2011, 13 (48) :21383-21391

[6]

Di Marino D, 2016, GREEN CHEM, V18, P6021, DOI [10.1039/C6GC01353H, 10.1039/c6gc01353h]

[7]

Dowe N., 2001, SSF EXPT PROTOCOLS L, P510

[8] Modeling and optimization of bi-directional delignification of rice straw for production of bio-fuel feedstock using central composite design approach [J].

Dutta, Sajal Kanti ;

Halder, Gopinath ;

Mandal, Mrinal Kanti .

ENERGY, 2014, 71 :579-587

[9]

Hong S, 2020, GREEN CHEM, V22, P1851, DOI [10.1039/D0GC00006J, 10.1039/d0gc00006j]

[10] Significantly enhanced enzymatic hydrolysis of rice straw via a high-performance two-stage deep eutectic solvents synergistic pretreatment [J].

Hou, Xue-Dan ;

Feng, Guo-Jian ;

Ye, Mei ;

Huang, Chao-Mei ;

Zhang, Yi .

BIORESOURCE TECHNOLOGY, 2017, 238 :139-146

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