The effect of aqueous ammonia soaking on enzymatic hydrolysis of wheat straw

2013 ◽  
Vol 5 (3) ◽  
pp. 033131 ◽  
Author(s):  
Sonnur Yazici ◽  
Asli Isci
Keyword(s):  
Enzymatic Hydrolysis ◽  
Wheat Straw ◽  
Aqueous Ammonia ◽  
Aqueous Ammonia Soaking ◽  
Hydrolysis Of

Improving the efficiency of enzymatic hydrolysis of Eucalyptus residues with a modified aqueous ammonia soaking method

2018 ◽  
Vol 33 (2) ◽  
pp. 165-174 ◽  
Author(s):  
Dan Huo ◽  
Qiulin Yang ◽  
Guigan Fang ◽  
Qiujuan Liu ◽  
Chuanling Si ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Enzymatic Hydrolysis ◽  
Aqueous Ammonia ◽  
Pulp Mill ◽  
Fiber Surface ◽  
Raw Material ◽  
Sem Images ◽  
Aqueous Ammonia Soaking ◽  
Guaiacyl Lignin ◽  
Hydrolysis Of

Abstract Eucalyptus residues from pulp mill were pretreated with aqueous ammonia soaking (AAS) method to improve the efficiency of enzymatic hydrolysis. The optimized condition of AAS was obtained by response surface methodology. Meanwhile, hydrogen peroxide was introduced into the AAS system to modify the AAS pretreatment (AASP). The results showed that a fermentable sugar yield of 64.96 % was obtained when the eucalypt fibers were pretreated at the optimal conditions, with 80 % of ammonia (w/w) for 11 h and keeping the temperature at 90 °C. In further research it was found that the addition of H2O2 to the AAS could improve the pretreatment efficiency. The delignification rate and enzymatic digestibility were increased to 64.49 % and 73.85 %, respectively, with 5 % of hydrogen peroxide being used. FTIR analysis indicated that most syringyl and guaiacyl lignin and a trace amount of xylan were degraded and dissolved during the AAS and AASP pretreatments. The CrI of the raw material was increased after AAS and AASP pretreatments, which was attributed to the removal of amorphous portion. SEM images showed that microfibers were separated and explored from the initial fiber structure after AAS pretreatment, and the AASP method could improve the destructiveness of the fiber surface.

Stepwise pretreatment of aqueous ammonia and ethylenediamine improve enzymatic hydrolysis of corn stover

2018 ◽  
Vol 124 ◽  
pp. 201-208 ◽  
Author(s):  
Jia-Qing Zhu ◽  
Wen-Chao Li ◽  
Lei Qin ◽  
Xiong Zhao ◽  
Si Chen ◽  
...  
Keyword(s):  
Enzymatic Hydrolysis ◽  
Corn Stover ◽  
Aqueous Ammonia ◽  
Hydrolysis Of

Kinetic model of enzymatic hydrolysis of steam-exploded wheat straw

2012 ◽  
Vol 87 (2) ◽  
pp. 1280-1285 ◽  
Author(s):  
Greta Radeva ◽  
Ivo Valchev ◽  
Stoiko Petrin ◽  
Eva Valcheva ◽  
Petya Tsekova
Keyword(s):  
Enzymatic Hydrolysis ◽  
Kinetic Model ◽  
Wheat Straw ◽  
Hydrolysis Of

Application of a microassay method to study enzymatic hydrolysis of pretreated wheat straw

2010 ◽  
Vol 85 (9) ◽  
pp. 1291-1297 ◽  
Author(s):  
Pablo Alvira ◽  
María José Negro ◽  
Felicia Sáez ◽  
Mercedes Ballesteros
Keyword(s):  
Enzymatic Hydrolysis ◽  
Wheat Straw ◽  
Pretreated Wheat Straw ◽  
Hydrolysis Of

Enhanced enzymatic hydrolysis of wheat straw by two-step pretreatment combining alkalization and adsorption

2018 ◽  
Vol 102 (22) ◽  
pp. 9831-9842 ◽  
Author(s):  
Mengjie Wu ◽  
Hongyu Liu ◽  
Junyuan Guo ◽  
Chunping Yang
Keyword(s):  
Enzymatic Hydrolysis ◽  
Wheat Straw ◽  
Hydrolysis Of
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