Comparison of different ionic liquids pretreatment for barley straw enzymatic saccharification.
Recently, application of ionic liquids due to their special solvency properties as a promising method of pretreatment for lignocellulosic biomass has received much attention. Chemical stability, temperature stability, non-flammability, low vapor pressure, wide liquidus range, and non-toxicity are among those unique properties. These solvents are also known as green solvents due to non-toxicity and low vapor pressure. The present study was set to compare the effect of five different ionic liquids namely, 1-ethyl-3-methyl imidazolium acetate, 1-ethyl-3-methyl imidazolium diethyl phosphate, 1-butyl-3-methyl imidazolium chlorides, 1,3-dimethyl imidazolium dimethyl phosphate, and 1-butyl-3-methylimidazolium-trifluoromethane sulfonate on barley straw in bioethanol production process. The performance of ionic liquids was evaluated based on the change observed in chemical structure, crystallinity index, and cellulose digestibility. Overall, 1-ethyl-3-methyl imidazolium acetate was found most effective in pretreating barely straw for bioethanol production. To the best of our knowledge, the present study reports different ionic liquids; some for the first time, for barely straw pretreatment.
Department of Chemical Engineering, South Tehran Branch, Islamic Azad University, Tehran, Iran.
Sohrab Haghighi
SH
Mood
Department of Chemical Engineering, South Tehran Branch, Islamic Azad University, Tehran, Iran.
Amir Hossein
AH
Golfeshan
Biofuel Research Team (BRTeam), Microbial Biotechnology and Biosafety Department, Agricultural Biotechnology Research Institute of Iran (ABRII), Mahdasht Road, Fahmideh Blvd., P.O. Box: 31535-1897, Karaj, Iran. meisam_tab@yahoo.com.
Meisam
M
Tabatabaei
Biofuel Research Team (BRTeam), Microbial Biotechnology and Biosafety Department, Agricultural Biotechnology Research Institute of Iran (ABRII), Mahdasht Road, Fahmideh Blvd., P.O. Box: 31535-1897, Karaj, Iran.
Saeed
S
Abbasalizadeh
Department of Chemical Engineering, South Tehran Branch, Islamic Azad University, Tehran, Iran.|Biofuel Research Team (BRTeam), Microbial Biotechnology and Biosafety Department, Agricultural Biotechnology Research Institute of Iran (ABRII), Mahdasht Road, Fahmideh Blvd., P.O. Box: 31535-1897, Karaj, Iran.
Mehdi
M
Ardjmand
Barely straw; Cellulose digestibility; Crystallinity index; Ionic liquid; Pretreatment