Lignocellulosic ethanol production without enzymes – Technoeconomic analysis of ionic liquid pretreatment followed by acidolysis

2014 ◽  
Vol 158 ◽  
pp. 294-299 ◽  
Author(s):  
Piotr Oleskowicz-Popiel ◽  
Daniel Klein-Marcuschamer ◽  
Blake A. Simmons ◽  
Harvey W. Blanch
2013 ◽  
Vol 102 ◽  
pp. 163-169 ◽  
Author(s):  
Marzieh Shafiei ◽  
Hamid Zilouei ◽  
Akram Zamani ◽  
Mohammad J. Taherzadeh ◽  
Keikhosro Karimi

2011 ◽  
Vol 102 (24) ◽  
pp. 11105-11114 ◽  
Author(s):  
Ling Tao ◽  
Andy Aden ◽  
Richard T. Elander ◽  
Venkata Ramesh Pallapolu ◽  
Y.Y. Lee ◽  
...  

2013 ◽  
Vol 15 (2) ◽  
pp. 94-98 ◽  
Author(s):  
Shengdong Zhu ◽  
Pei Yu ◽  
Mingke Lei ◽  
Yanjie Tong ◽  
Lu Zheng ◽  
...  

Ionic liquid (IL) pretreatment of lignocellulosic materials has provided a new technical tool to improve lignocellulosic ethanol production. To evaluate the influence of the residual IL in the fermentable sugars from enzymatic hydrolysis of IL pretreatment of lignocellulosic materials on the subsequent ethanol fermentation, the toxicity of the IL 1-butyl-3-methylimidazolium chloride ([BMIM]Cl) to Saccharomyces cerevisiae AY93161 was investigated. Firstly, the morphological structure, budding and metabolic activity of Saccharomyces cerevisiae AY93161 at different [BMIM]Cl concentrations were observed under an optical microscope. The results show that its single cell morphology remained unchanged at all [BMIM]Cl concentrations, but its reproduction rate by budding and its metabolic activity decreased with the [BMIM]Cl concentration increasing. The half effective concentration (EC50) and the half inhibition concentration (IC50) of [BMIM]Cl to Saccharomyces cerevisiae AY93161 were then measured using solid and liquid suspension culture and their value were 0.53 and 0.39 g.L-1 respectively. Finally, the influence of [BMIM]Cl on ethanol production was investigated. The results indicate that the [BMIM]Cl inhibited the growth and ethanol production of Saccharomyces cerevisiae AY93161. This toxicity study provides useful basic data for further development in lignocellulosic ethanol production by using IL technology and it also enriches the IL toxicity data.


BioResources ◽  
2013 ◽  
Vol 8 (2) ◽  
Author(s):  
Shengdong Zhu ◽  
Pei Yu ◽  
Qijun Wang ◽  
Bo Cheng ◽  
Jie Chen ◽  
...  

Author(s):  
Lalitendu Das ◽  
Ezinne C. Achinivu ◽  
Carolina Araujo Barcelos ◽  
Eric Sundstrom ◽  
Bashar Amer ◽  
...  

2016 ◽  
Vol 10 (1) ◽  
pp. 391-397
Author(s):  
Wangxiang Huang ◽  
Jiancheng Jin ◽  
Liang Feng ◽  
Wenjing Huang ◽  
Ke Wang ◽  
...  

The effects of ionic liquid 1-butyl-3-methylimidazolium chloride (BMIMCl) on the ethanol fermentation process of Saccharomyces cerevisiae AY93161 were investigated by using microcalorimetry. On the basis of microcalorimetric and process data, the thermokinetic parameters of the ethanol fermentation process at different BMIMCl concentrations from 0.001 to 5 gL-1 were calculated. Compared to the control, the BMIMCl caused a decreased value of the maximum specific growth rate µm (from 0.226 to 0.105 h-1), and an increased value of the maximum specific produced heat rate pm (from 2.08 to 7.06 mWlg-1) and the total heat output H for producing 1 g ethanol (from 990 to 1871 Jg-1). The decreased µm and increased pm and H led to lower final yeast concentration (from 3.85 to 2.39 gL-1) and ethanol concentration (from 40.3 to 25.1 gL-1). This gives useful information for improving the lignocellulosic ethanol production process using the ionic liquid technology.


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