1. Biorefining of lignocellulosic feedstock and waste materials using ionic liquid
- Author
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Eugene Carmichael, Elaheh Ghassemieh, and Gary Lyons
- Subjects
0106 biological sciences ,Materials science ,020209 energy ,Mechanical Engineering ,02 engineering and technology ,Condensed Matter Physics ,01 natural sciences ,Solvent ,chemistry.chemical_compound ,chemistry ,Chemical engineering ,Mechanics of Materials ,Cellulosic ethanol ,010608 biotechnology ,Enzymatic hydrolysis ,Ionic liquid ,Digestate ,0202 electrical engineering, electronic engineering, information engineering ,General Materials Science ,Spent mushroom compost ,Biorefining ,Cellulose - Abstract
The ionic liquid trihexyltetradecylphosphonium hydrogen sulphate (THTDP HSO4) was used to extract cellulose from various lignocellulosic sources:- wheat straw, perennial ryegrass, willow, anaerobic digestate (AD) and spent mushroom compost (SMC). This was compared with a traditional dilute sulphuric acid extraction to evaluate the potential for this ionic liquid to be of use in the biorefining industry. The use of ultrasonication to facilitate the reaction was also tested. Results showed that this ionic liquid, which combines the features of a hydrophobic solvent with an acidic catalyst was effective in hydrolysing lignocelluloses. Compared to the use of dilute sulphuric acid, the ionic liquid produced purer, more thermally stable cellulosic fibres. It was also shown to be as effective as the dilute sulphuric acid in pretreating lignocelluloses for enzymatic hydrolysis. Finally, ultrasonication was shown to be compatible with the ionic liquid and suggests an energy efficient method for pretreatment of lignocellulose.
- Published
- 2020
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