Results 161 to 170 of about 18,450 (195)
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International Journal of Biological Macromolecules, 2020
The removal of lignin is important to the recovery of saccharides from the pre-hydrolysis liquor (PHL) in kraft-based dissolved pulp production. A one-step process for lignin removal from PHL via treatment with horseradish peroxidase (HRP) in the presence of Ca2+ was proposed, and its principle was studied.
Fusheng, Wang +5 more
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The removal of lignin is important to the recovery of saccharides from the pre-hydrolysis liquor (PHL) in kraft-based dissolved pulp production. A one-step process for lignin removal from PHL via treatment with horseradish peroxidase (HRP) in the presence of Ca2+ was proposed, and its principle was studied.
Fusheng, Wang +5 more
openaire +2 more sources
Bioresource Technology, 2012
A process for removing inhibitors from pre-hydrolysis liquor (PHL) of a kraft-based dissolving pulp production process by adsorption and flocculation, and the characteristics of this process were studied. In this process, industrially produced PHL was treated with unmodified and oxidized activated carbon as an absorbent and polydiallyldimethylammonium ...
Xin, Liu, Pedram, Fatehi, Yonghao, Ni
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A process for removing inhibitors from pre-hydrolysis liquor (PHL) of a kraft-based dissolving pulp production process by adsorption and flocculation, and the characteristics of this process were studied. In this process, industrially produced PHL was treated with unmodified and oxidized activated carbon as an absorbent and polydiallyldimethylammonium ...
Xin, Liu, Pedram, Fatehi, Yonghao, Ni
openaire +2 more sources
Separation and Purification Technology, 2015
Abstract Pre-hydrolysis Liquor (PHL) is an aqueous stream containing dissolved organics, produced in the pre-hydrolysis kraft (PHK)-based dissolving pulp production process. Hemicelluloses (6 wt.%) and acetic acid (1 wt.%) present in the PHL can be used or recovered as valuable products, instead of being used as fuel for recovery boiler operation. In
Ishneet Kaur, Yonghao Ni
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Abstract Pre-hydrolysis Liquor (PHL) is an aqueous stream containing dissolved organics, produced in the pre-hydrolysis kraft (PHK)-based dissolving pulp production process. Hemicelluloses (6 wt.%) and acetic acid (1 wt.%) present in the PHL can be used or recovered as valuable products, instead of being used as fuel for recovery boiler operation. In
Ishneet Kaur, Yonghao Ni
openaire +1 more source
Cellulose, 2018
The effect of using auto pre-hydrolysis liquor, acidic pre-hydrolysis liquor, and alkaline pre-hydrolysis liquor on the production of alpha cellulose from poplar was investigated across this research work. Poplar chips were pulped with soda-AQ pulping process at a kappa number of 15 after being pre-hydrolyzed with different pre-hydrolysis liquors at ...
Mostafa Nikkhah Dafchahi +4 more
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The effect of using auto pre-hydrolysis liquor, acidic pre-hydrolysis liquor, and alkaline pre-hydrolysis liquor on the production of alpha cellulose from poplar was investigated across this research work. Poplar chips were pulped with soda-AQ pulping process at a kappa number of 15 after being pre-hydrolyzed with different pre-hydrolysis liquors at ...
Mostafa Nikkhah Dafchahi +4 more
openaire +1 more source
Biomass and Bioenergy, 2014
Abstract The kinetics of C-5 sugars (xylose/xylan) conversion to furfural in an industrial pre-hydrolysis liquor (PHL) in both acetic acid (HAc)-catalyzed system and sulfuric acid (H 2 SO 4 )-catalyzed system, were determined in a temperature range of 150–190 °C.
Haitang Liu +5 more
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Abstract The kinetics of C-5 sugars (xylose/xylan) conversion to furfural in an industrial pre-hydrolysis liquor (PHL) in both acetic acid (HAc)-catalyzed system and sulfuric acid (H 2 SO 4 )-catalyzed system, were determined in a temperature range of 150–190 °C.
Haitang Liu +5 more
openaire +1 more source
Separation and Purification Technology, 2019
Abstract In this study, the effect of traditional acidification and hydrothermal acid hydrolysis on the separation of lignin and xylose from the pre-hydrolysis liquor (PHL) of kraft pulping process was comparatively evaluated. The PHL was acidified at room temperature or hydrothermally treated under acidic conditions to isolate lignin and xylose.
Xue Chen +6 more
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Abstract In this study, the effect of traditional acidification and hydrothermal acid hydrolysis on the separation of lignin and xylose from the pre-hydrolysis liquor (PHL) of kraft pulping process was comparatively evaluated. The PHL was acidified at room temperature or hydrothermally treated under acidic conditions to isolate lignin and xylose.
Xue Chen +6 more
openaire +1 more source
International Journal of Biological Macromolecules
The pre-hydrolysis liquor (PHL) produced during pulp dissolution and biomass refining is mainly composed of hemicellulose and lignin, and it is a potential source for production of value-added materials and platform chemicals; however, their utilization has been a serious challenge.
Shunli, Li +5 more
openaire +2 more sources
The pre-hydrolysis liquor (PHL) produced during pulp dissolution and biomass refining is mainly composed of hemicellulose and lignin, and it is a potential source for production of value-added materials and platform chemicals; however, their utilization has been a serious challenge.
Shunli, Li +5 more
openaire +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.
Aojie, Deng +6 more
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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.
Aojie, Deng +6 more
openaire +2 more sources
Bioresource Technology, 2013
Acetic acid was one of the main compositions of the pre-hydrolysis liquor (PHL), which was recovered by reactive extraction with triisooctylamine (TIOA) diluted with decanol. Dilution of TIOA played an important role in extracting acetic acid from the PHL.
G, Yang +4 more
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Acetic acid was one of the main compositions of the pre-hydrolysis liquor (PHL), which was recovered by reactive extraction with triisooctylamine (TIOA) diluted with decanol. Dilution of TIOA played an important role in extracting acetic acid from the PHL.
G, Yang +4 more
openaire +2 more sources
Biomass and Bioenergy, 2012
Abstract A study was carried out to assess the chemical composition of pre-hydrolysate liquor (PHL) produced in a dissolving pulp production facility in Eastern Canada. The true PHL contains high amount of both mono- and oligo-sugars (1.50–1.65%). Xylose/xylan was the predominate sugar in the PHL.
Abrar Saeed +5 more
openaire +1 more source
Abstract A study was carried out to assess the chemical composition of pre-hydrolysate liquor (PHL) produced in a dissolving pulp production facility in Eastern Canada. The true PHL contains high amount of both mono- and oligo-sugars (1.50–1.65%). Xylose/xylan was the predominate sugar in the PHL.
Abrar Saeed +5 more
openaire +1 more source