Results 151 to 160 of about 18,536 (182)

Chitosan as a flocculant for pre-hydrolysis liquor of kraft-based dissolving pulp production process

Carbohydrate Polymers, 2011
Abstract In this work, the flocculation concept was employed to recover the dissolved lignocellulosic materials of industrially produced pre-hydrolysis liquor (PHL) using two different molecular weights of chitosan. The analysis revealed the maximum turbidity of 1000 NTU or 1900 NTU via adding 2.2 mg/g low molecular weight (LMW) or 1.7 mg/g high ...
Abrar Saeed, Pedram Fatehi, Yonghao Ni
openaire   +3 more sources

Green synthesis of bacterial cellulose via acetic acid pre-hydrolysis liquor of agricultural corn stalk used as carbon 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 ...
Zheng, Cheng, Rendang, Yang, Xu, Liu, Xiao, Liu, Hua, Chen   +4 more
openaire   +4 more sources

Enhancement of lignin-based carbon quantum dots from poplar pre-hydrolysis liquor on photocatalytic CO2 reduction via TiO2 nanosheets

Industrial Crops and Products, 2021
Abstract Reasonable utilization of lignin in pre-hydrolysis liquor (PHL) is very important for the economic benefit of papermaking industry. In this paper, lignin in poplar pre-hydrolysis liquor (PHL) was effectively adsorbed by TiO2 nanosheets, realizing the purification of PHL.
Qichao Gao, Zhimin Yuan, Guihua Yang, Zhongjian Tian, Zaiyong Jiang, Kai Zhang, Chao Wang, Jiachuan Chen   +7 more
openaire   +3 more sources

Isolation and cationization of hemicelluloses from pre-hydrolysis liquor of kraft-based dissolving pulp production process

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),
Zehua Liu, Yonghao Ni, Pedram Fatehi, Abrar Saeed   +3 more
openaire   +3 more sources

A process to produce furfural and acetic acid from pre-hydrolysis liquor of kraft based dissolving pulp process

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
openaire   +3 more sources

Hydrothermal acid hydrolysis for highly efficient separation of lignin and xylose from pre-hydrolysis liquor of kraft pulping process

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, Xuefei Cao, Shaoni Sun, Tongqi Yuan, Shuangfei Wang, Quentin Shi, Runcang Sun   +6 more
openaire   +3 more sources

A feasible process for furfural production from the pre-hydrolysis liquor of corncob via biochar catalysts in a new biphasic system

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, Qixuan, Lin, Yuhuan, Yan, Huiling, Li, Junli, Ren, Chuanfu, Liu, Runcang, Sun   +6 more
openaire   +4 more sources

Recovery of acetic acid from pre-hydrolysis liquor of hardwood kraft-based dissolving pulp production process by reactive extraction with triisooctylamine

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, M Sarwar, Jahan, Laboni, Ahsan, Linqiang, Zheng, Yonghao, Ni   +4 more
openaire   +4 more sources

Adsorption of lignocelluloses of pre-hydrolysis liquor on calcium carbonate to induce functional filler

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, Fadia C, Hamdan, Yonghao, Ni   +2 more
openaire   +2 more sources

Biological treatment and ultrafiltration of woodchip pre-hydrolysis liquor from dissolving pulp mills

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, Claudio Mudadu Silva, Jorge Luiz Colodette, Ann H. Mounteer   +3 more
openaire   +1 more source