Results 141 to 150 of about 5,336,577 (173)
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Carbohydrate Polymers, 2017
In this study, the pre-hydrolysis liquor (PHL) was recycled during aspen chip water pre-hydrolysis, and the effects of PHL recycling on the extraction and accumulation of the hemicellulosic saccharides especially that with high molecular weight in the PHL were studied.
Zongquan, Li +4 more
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In this study, the pre-hydrolysis liquor (PHL) was recycled during aspen chip water pre-hydrolysis, and the effects of PHL recycling on the extraction and accumulation of the hemicellulosic saccharides especially that with high molecular weight in the PHL were studied.
Zongquan, Li +4 more
openaire +2 more sources
Carbohydrate Polymers, 2013
In this work, we aimed at adsorbing the oligo-sugars of prehydrolysis liquor on precipitated calcium carbonate (PCC) to produce modified PCC. The results showed that the adsorptions of oligo-sugars, lignin and furfural were greater on porous PCC (PCC2) than on nano-sized PCC (PCC1) due to the larger surface area of PCC2.
Pedram, Fatehi +2 more
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In this work, we aimed at adsorbing the oligo-sugars of prehydrolysis liquor on precipitated calcium carbonate (PCC) to produce modified PCC. The results showed that the adsorptions of oligo-sugars, lignin and furfural were greater on porous PCC (PCC2) than on nano-sized PCC (PCC1) due to the larger surface area of PCC2.
Pedram, Fatehi +2 more
openaire +2 more sources
Separation and Purification Technology, 2019
Abstract The removal of the lignin from the pre-hydrolysis liquor (PHL) of kraft-based dissolved pulp production is essential for the utilization of the saccharides in PHL. Horseradish peroxidase (HRP) was used to treat the PHL, and the treatment conditions for lignin removal were optimized, and the novel combined processes of HRP treatment and ...
Menghua Qin, Chenglong Qiu
exaly +2 more sources
Abstract The removal of the lignin from the pre-hydrolysis liquor (PHL) of kraft-based dissolved pulp production is essential for the utilization of the saccharides in PHL. Horseradish peroxidase (HRP) was used to treat the PHL, and the treatment conditions for lignin removal were optimized, and the novel combined processes of HRP treatment and ...
Menghua Qin, Chenglong Qiu
exaly +2 more sources
Bioresource Technology, 2016
A feasible approach was developed to produce furfural from the pre-hydrolysis liquor of corncob via biochar catalysts as the solid acid catalyst in a new biphasic system with dichloromethane (DCM) as the organic phase and the concentrated pre-hydrolysis liquor (CPHL) containing NaCl as the aqueous phase.
Qixuan Lin, Chuan-Fu Liu, Junli Ren
exaly +3 more sources
A feasible approach was developed to produce furfural from the pre-hydrolysis liquor of corncob via biochar catalysts as the solid acid catalyst in a new biphasic system with dichloromethane (DCM) as the organic phase and the concentrated pre-hydrolysis liquor (CPHL) containing NaCl as the aqueous phase.
Qixuan Lin, Chuan-Fu Liu, Junli Ren
exaly +3 more sources
Green Chemistry, 2022
High-value use of PHL to transform the platform compound furfural. Laccase polymerization through the combination of 5-5′ and 4-O-5′ bonds removes soluble lignin in PHL while protecting the sugar content from loss.
Jing Liu +8 more
openaire +1 more source
High-value use of PHL to transform the platform compound furfural. Laccase polymerization through the combination of 5-5′ and 4-O-5′ bonds removes soluble lignin in PHL while protecting the sugar content from loss.
Jing Liu +8 more
openaire +1 more source
Biomass and Bioenergy, 2011
Abstract Hemicelluloses are the main organics dissolved in the pre-hydrolysis liquor (PHL) of the kraft-based dissolving pulp production process. In this study, two methods were employed to isolate the hemicelluloses from industrial PHL samples. The results showed that the hemicelluloses, precipitated in ethanol after an acidification step (Method 2),
Yonghao Ni, Pedram Fatehi
exaly +2 more sources
Abstract Hemicelluloses are the main organics dissolved in the pre-hydrolysis liquor (PHL) of the kraft-based dissolving pulp production process. In this study, two methods were employed to isolate the hemicelluloses from industrial PHL samples. The results showed that the hemicelluloses, precipitated in ethanol after an acidification step (Method 2),
Yonghao Ni, Pedram Fatehi
exaly +2 more sources
Flocculation Process of PEO for Lignin Removal from Pre-Hydrolysis Liquor of Mixed Hardwood
Advanced Materials Research, 2013To isolate lignin of PHL, PEO with various molecular weights (MW) s were added to PHL under different process conditions, and the turbidity and size of complexes formed in the PHL, as well as the lignin, hemicelluloses (sugar) and chemical oxygen demand (COD) of PHL were assessed after PEO treatments. Alternatively, poly aluminum chloride (PAC) (200 mg/
Gang Liu +5 more
openaire +1 more source
Bioresource Technology, 2017
Herein, bacterial cellulose (BC) was synthesized by acetobacter xylinum via organic acid pre-hydrolysis liquor of agricultural corn stalk used as carbon source. Acetic acid was applied to pretreat the corn stalk, then, the prehydrolysate was detoxified by sequential steps of activated carbon and ion exchange resin treatment prior to use as carbon ...
Rendang Yang
exaly +3 more sources
Herein, bacterial cellulose (BC) was synthesized by acetobacter xylinum via organic acid pre-hydrolysis liquor of agricultural corn stalk used as carbon source. Acetic acid was applied to pretreat the corn stalk, then, the prehydrolysate was detoxified by sequential steps of activated carbon and ion exchange resin treatment prior to use as carbon ...
Rendang Yang
exaly +3 more sources
Nordic Pulp & Paper Research Journal, 2018
Abstract Dissolving pulps could be considered as the future biorefineries, which normally generate liquor during the wood chip pre-hydrolysis (PHL). PHL has high chemical oxygen demand (COD) and biochemical oxygen demand (BOD). Mills do not have efficient means for disposal of PHL, being in general burned in the recovery boiler with a ...
Tatiana Aurora Condezo Castro +3 more
openaire +1 more source
Abstract Dissolving pulps could be considered as the future biorefineries, which normally generate liquor during the wood chip pre-hydrolysis (PHL). PHL has high chemical oxygen demand (COD) and biochemical oxygen demand (BOD). Mills do not have efficient means for disposal of PHL, being in general burned in the recovery boiler with a ...
Tatiana Aurora Condezo Castro +3 more
openaire +1 more source
Industrial Crops and Products, 2018
Abstract Pre-hydrolysis liquor (PHL) from the kraft-based dissolving pulp process contains large amounts of hemicelluloses and their degradation products, which makes it a promising candidate for the production of xylose or xylooligosaccharides (XOS). However, it is usually treated as wastewater of the pulp and paper industries.
Xuefei Cao, Shaolong Sun, Runcang Sun
exaly +2 more sources
Abstract Pre-hydrolysis liquor (PHL) from the kraft-based dissolving pulp process contains large amounts of hemicelluloses and their degradation products, which makes it a promising candidate for the production of xylose or xylooligosaccharides (XOS). However, it is usually treated as wastewater of the pulp and paper industries.
Xuefei Cao, Shaolong Sun, Runcang Sun
exaly +2 more sources