A morpholinium ionic liquid for rice straw pretreatment to enhance ethanol production
Artikel i vetenskaplig tidskrift, 2019

Rice straw was successfully pretreated with a novel and inexpensive morpholinium ionic liquid, 1-H-3-methylmorpholinium chloride ([HMMorph][Cl]). The influence of water (30, 40, 50% w/w) and dimethyl sulfoxide (DMSO) (10, 30% w/w), as co-solvents, pretreatment time (2, 3, 5 h), temperature (90, 105, 120 °C), solid loading (5, 6.7, 10% w/w), and straw particle size (<0.177, 0.177–0.841 mm, and 0.841–2 mm) were investigated for maximum ethanol production. The best results were obtained in 50% water, at 120 °C and 5% (w/w) solid loading for 5 h from 0.177 – 0.841 mm straw particles. The hydrolysis yield was increased from 33.2% to 70.1%, while ethanol production yield was improved from 21.9% to 64% of the theoretical maximum. The performance of the IL was comparable to 1-ethyl-3-methylimidazolium acetate. Simple synthesis process and dilute solution required for the pretreatment with [HMMorph][Cl] offers cost reductions in the use of ILs in biofuel production.

Morpholinium ionic liquid

Rice straw




Marzieh Mohamadi

Chalmers, Biologi och bioteknik, Systembiologi

Isfahan University of Technology

Marzieh Shafiei

University of Isfahan

Amir Abdolmaleki

Isfahan University of Technology

Shiraz University

Keikhosro Karimi

Isfahan University of Technology

J. P. Mikkola

Umeå universitet

Åbo Akademi

Christer Larsson

Chalmers, Biologi och bioteknik, Systembiologi

Industrial Crops and Products

0926-6690 (ISSN)

Vol. 139 111494


Förnyelsebar bioenergi

Kemiska processer




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