Results 61 to 70 of about 1,591 (176)

Biomimetic TCF Bleaching of Pulp by Simple Inorganic Complexes of Cupric/Cobalt Acetate [PDF]

Iranian Journal of Chemistry & Chemical Engineering, 2014
Oxygen delignified kraft pulp from eucalyptus (E. urophylla × E. grandis) was catalytically pretreated in aerobic condition using ammonium persulfate in present of catalists like cupric acetate and/or cobalt acetate in acetic acid-water solution, i.
Xue Fei Zhou
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Model development for real oxygen delignification processes

TAPPI Journal
Previous extensive work has been done on modeling the oxygen delignification process, based on how the basic parameters, i.e., temperature, kappa number, concentration of alkali, and concentration of oxygen, affect the delignification rate. However, these models are not used extensively to evaluate the performance of real processes, primarily because ...
JARI KÄYHKÖ, KARI PELTONEN, MARKUS HONKANEN, ANTTI KOKKONEN, ADRIAAN VAN HEININGEN   +4 more
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AVALIAÇÃO DA SENSIBILIDADE DAS ANÁLISES DA LIGNINA RESIDUAL PELOS MÉTODOS DE NITROBENZENO, ÓXIDO DE COBRE E ACIDÓLISE

Ciência Florestal, 2014
This study aimed to evaluate the sensitiveness of the information obtained for the residual lignin from Eucalyptus grandis kraft pulps analyzed through the nitrobenzene oxidation, copper oxide (CuO) reduction and acidolysis techniques.
Gustavo Ventorim, Alexandre Coelho, Jorge Luiz Colodette, Ericka Figueiredo Alves, Jaqueline Silveira Comelato   +4 more
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Pulp strength enhancement by oxygen delignification

, 2022
Oxygen delignification is widely used in the pulp and paper industry as a part of delignification process between the kraft cook and bleaching. However, its potential has not been fully utilized. Rather than an intermediate process between cooking and bleaching, oxygen delignification is a strong oxidizing agent with powerful effects on the pulp ...
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ENHANCED SELECTIVITY OF OXYGEN DELIGNIFICATION BY CHERRY AND GUAR GUM ADDITIVES

Cellulose Chemistry and Technology
Natural polysaccharide-based gums produced by plants in response to biotic or abiotic factors are used in various industries due to their biodegradability, renewability, biocompatibility, and non-toxic properties. This study examined the use of these gums in a new application, such as adding them to the delignification liquor to decrease the negative ...
Iskefyeli, Ayşegül (58880064800), Kirci, Hüseyin (6602882061), Kalyoncu, Evren Ersoy (35105101700), Erişir, Emir (44360952500), Department of Forest Industry Engineering, Faculty of Forest, Karadeniz Technical University, Trabzon, Turkey; Department of Material and Material Processing Technologies, Arsin Vocational School, Karadeniz Technical University, Trabzon, Arsin, Turkey; Department of Material and Material Processing Technologies, Pamukova Vocational School, Sakarya University of Applied Sciences, Sakarya, Pamukova, Turkey   +4 more
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Clean Bleaching Engineering Practice for Bagasse Pulp: Totally Chlorine-Free and Elemental Chlorine-Free Bleaching Realized with the Same Production Line

BioResources, 2015
The experimental research, process design principles, and engineering practice of a bagasse pulp production line that could run both totally chlorine-free (OP)Q(PO) and elemental chlorine-free (OP)D(EOP) bleaching sequences are discussed in this paper ...
Zhi Li, Jun Li, Jun Xu, Li-huan Mo
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Evaluation of Hemp Root Bast as a New Material for Papermaking

BioResources, 2013
Industrial hemp is a non-wood fiber material that can be used for papermaking due to a high yield of hemp raw material and high-quality physical properties of its pulp.
Cheng Miao, Lan-Feng Hui, Zhong Liu, Xin Tang   +3 more
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Coupling pretreatment of lignocellulosic biomass for enzymatic hydrolysis with electrochemical reduction of CO2 for production of formic acid

Green Chemical Engineering
A new coupled electrolysis system has been developed by combining pretreatment of lignocellulosic biomass (corn stover) in alkaline anolyte for increasing cellulose digestibility with electrochemical reduction of CO2 on the cathode to produce formic acid.
Xi Liu, Fangqian Wang, Yongrong Li, Xuebing Zhao   +3 more
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Optimization of recombinant laccase production by Yarrowia lipolytica in a medium containing glucose as carbon source with Taguchi method [PDF]

Biological Journal of Microorganism, 2017
Introduction:Laccases (EC 1.10.3.2; benzenediol: oxygen oxidoreductase) are copper-containing oxidases that use molecular oxygen to oxidize various aromatic and non-aromatic compounds.
Farshad Darvishi, Marzie Moradi, Catherine Madzak, Claude Jolivalt   +3 more
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TCF BLEACHING CHARACTER OF SODA-ANTHRAQUINONE PULP FROM OIL PALM FROND

BioResources, 2011
The OQP, OQPO, and OLQP bleaching sequences have been applied to oil palm frond soda-anthraquinone pulp. Oxygen delignification resulted in a delignification of approximately half of the kappa number.
Xiwen Wang,, Jian Hu,, Yun Liang,, Jingshan Zeng   +3 more
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