Effect of lignin structure on adsorbable organic halogens formation in chlorine dioxide bleaching [PDF]
Royal Society Open Science, 2019 Adsorbable organic halogens (AOX) are formed in pulp bleaching as a result of the reaction of residual lignin with chlorine dioxide. The natural structure of lignin is very complex and it tends to be damaged by various extraction methods. All the factors
Lisheng Shi +4 more
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Difference in adsorbable organic halogen formation between phenolic and non-phenolic lignin model compounds in chlorine dioxide bleaching [PDF]
Royal Society Open Science, 2019 Adsorbable organic halogen (AOX) is generally formed by the reaction of residual lignin in pulps with chlorine dioxide during bleaching. Lignin has a complex structure. Different functional groups and bonds are present in lignin structures.
Lisheng Shi +5 more
doaj +2 more sources
Degradation of EDTA and DTPA in chlorine dioxide bleaching conditions
Water Science and Technology, 2004 The decomposition of EDTA and DTPA was studied in simulated chlorine dioxide bleaching conditions. Under the investigated conditions EDTA and DTPA decomposed readily. Accordingly, feeding the chelating agents to the first chlorine dioxide stages (D0) should be reconsidered, when successful metal removal is desired.
Mika Sillanpää
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Chemosphere, 2019 The article reviews the transition from bleaching kraft pulp with elemental chlorine to bleaching with chlorine dioxide with respect to formation of chlorinated dioxins and furans (PCDD/Fs). New data is also presented for bleaching with 100% chlorine dioxide and the effect of elemental chlorine impurities.
exaly +3 more sources
SIMULTANEOUS DETERMINATION OF CHLORINE DIOXIDE AND HYPOCHLOROUS ACID IN BLEACHING SYSTEM
BioResources, 2011 This study has demonstrated a rapid spectroscopic method for the determination of chlorine dioxide and hypochlorous acid concentrations in the pulp bleaching processes.
Qiang Wang +4 more
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Optimization of Laccase-Aided Chlorine Dioxide Bleaching of Bagasse Pulp
BioResources, 2015 The laccase-mediator system in laccase-aided chlorine dioxide bleaching of bagasse pulp was optimized using response surface methodology (RSM). The effects and interactions of the laccase enzyme dosage, the dosage of the mediator 1-hydroxybenzotriazole ...
Yong Pei +5 more
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Effects of the Preferential Oxidation of Phenolic Lignin Using Chlorine Dioxide on Pulp Bleaching Efficiency [PDF]
International Journal of Molecular Sciences, 2022 Yi Liu, Shuangquan Yao, Baojie Liu
exaly +2 more sources
Effect of chlorine dioxide with NaH2PO4 and DMSO on bleaching of kraft pine pulp
AIP Advances, 2021 In this paper, the effect of D0 temperature, Kappa factor and the final pH value on bleaching sulfate bleached pine wood pulp was studied. The results showed that the bleaching efficiency was better when the pH value was 4, and the amount of absorbable ...
Lijie Huang +6 more
doaj +1 more source
Effects of xylanase on optical properties of bagasse kraft pulp in ECF bleaching [PDF]
تحقیقات علوم چوب و کاغذ ایران, 2009 The effect of using commercial xylanase enzyme in prebleaching of bagasse kraft pulp was investigated. Xylanase enzyme from Trichoderma viride was added to pulp at various doses of 10, 25 and 50 IU/g pulp for reaction time 2h and then the enzyme treated ...
Hossein Resalti +2 more
doaj +1 more source
Applicability of Microbial Xylanases in Paper Pulp Bleaching: A Review
BioResources, 2014 The pulp and paper industries are attempting to bring changes to the bleaching process to minimize the use of chlorine to satisfy regulatory and market demands. Xylanases offer a cost-effective way for mills to realize a variety of benefits in bleaching.
Avdhesh Kumar Gangwar +2 more
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