Improvement of ethanol production from birch and spruce pretreated with 1-H-3-methylmorpholinium chloride
Electron. j. biotechnol
;
41: 95-99, sept. 2019. graf, tab, ilus
Artículo
en Inglés
| LILACS
| ID: biblio-1087252
ABSTRACT
Background: Pretreatment is the critically important step for the production of ethanol from lignocelluloses. In this study, hardwood birch (Betula pendula) and softwood spruce (Norway spruce) woods were pretreated with a newly synthesized morpholinium ionic liquid, 1-H-3-methylmorpholinium chloride ([HMMorph][Cl]), followed by enzymatic hydrolysis and fermentation to ethanol. Results: [HMMorph][Cl] was synthesized using inexpensive raw materials, i.e., hydrochloric acid and N-methyl morpholine, following a simple process. The influence of pretreatment time (2, 3, 5, and 8 h) and temperature (120 and 140°C) in terms of hydrolysis efficiency was investigated. Glucose yields from enzymatic hydrolysis were improved from 13.7% to 45.7% and 12.9% to 51.8% after pretreatment of birch and spruce woods, respectively, under optimum pretreatment conditions (i.e., at 140°C for 3 h) as compared to those from pristine woods. Moreover, the yields of ethanol production from birch and spruce were increased to 34.8% and 44.2%, respectively, while the yields were negligible for untreated woods. Conclusions: This study demonstrated the ability of [HMMorph][Cl] as an inexpensive agent to pretreat both softwood and hardwood.
Texto completo:
Disponible
Índice:
LILACS (Américas)
Asunto principal:
Betula
/
Etanol
/
Lignina
Idioma:
Inglés
Revista:
Electron. j. biotechnol
Asunto de la revista:
Biotecnologia
Año:
2019
Tipo del documento:
Artículo
País de afiliación:
Irán
/
Suecia
Institución/País de afiliación:
Chalmers University of Technology/SE
/
Isfahan University of Technology/IR
/
Umeå University/SE
/
University of Isfahan/IR
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