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Enhancement of high-solids enzymatic hydrolysis of corncob residues by bisulfite pretreatment for biorefinery
- Source :
- Bioresource Technology. 221:461-468
- Publication Year :
- 2016
- Publisher :
- Elsevier BV, 2016.
-
Abstract
- Co-production of glucose, furfural and other green materials based on a lignocellulosic biorefinery is a promising way to realize the commercial application of corncob residues. An effective process was developed for glucose production using low temperature bisulfite pretreatment and high-solids enzymatic hydrolysis. Corncob residues from furfural production (FRs) were pretreated with 0.1g NaHSO3/g dry substrate at 100°C for 3h. Lignin was sulfonated and sulfonic groups were produced during pretreatment, which resulted in decreasing the zeta potential of the samples. Compared with raw material, bisulfite pretreatment of FRs increased the glucose yield from 18.6 to 99.45% after 72h hydrolysis at a solids loading of 12.5%. The hydrolysis residues showed a relatively high thermal stability and concentrated high derivatives. Direct pretreatment followed by enzymatic hydrolysis is an environmentally-friendly and economically-feasible method for the production of glucose and high-purity lignin, which could be further converted into high-value products.
- Subjects :
- Environmental Engineering
020209 energy
Bioengineering
02 engineering and technology
010501 environmental sciences
Raw material
Corncob
Furfural
Zea mays
01 natural sciences
chemistry.chemical_compound
Hydrolysis
Bioreactors
Enzymatic hydrolysis
0202 electrical engineering, electronic engineering, information engineering
Sulfites
Lignin
Waste Management and Disposal
0105 earth and related environmental sciences
Chromatography
Renewable Energy, Sustainability and the Environment
General Medicine
Biorefinery
Bisulfite
Glucose
Biochemistry
chemistry
Subjects
Details
- ISSN :
- 09608524
- Volume :
- 221
- Database :
- OpenAIRE
- Journal :
- Bioresource Technology
- Accession number :
- edsair.doi.dedup.....5cbeb41dc80819ead58f0d30d15d8081