The Changing Structure of Residual Lignin in the Unbleached Bagasse Pulp During Chlorine Dioxide Delignification

2020 ◽  
Vol 14 (1) ◽  
pp. 20-28 ◽  
Author(s):  
Ming Lei ◽  
Bin Luo ◽  
Qingtong Zhang ◽  
Chenyan Guo ◽  
Mingchao Chi ◽  
...  
Keyword(s):  
Chlorine Dioxide ◽  
Residual Lignin ◽  
Bagasse Pulp

Voltammetric analysis of the bleachability of softwood kraft pulps

Holzforschung ◽  
2004 ◽  
Vol 58 (6) ◽  
pp. 581-587 ◽  
Author(s):  
Robert Bourbonnais ◽  
Loredana Valeanu ◽  
Michael G. Paice
Keyword(s):  
Chlorine Dioxide ◽  
Acid Content ◽  
Black Spruce ◽  
Kappa Number ◽  
Western Hemlock ◽  
Kraft Pulps ◽  
Residual Lignin ◽  
Redox Mediators ◽  
Voltammetric Analysis ◽  
Hexenuronic Acid

Abstract Kraft and oxygen delignified pulps with various kappa numbers were prepared from black spruce and western hemlock chips. The bleachability (ratio of kappa number decrease to chlorine dioxide applied) of the different pulps at the same kappa number varied with both wood furnish and delignification process. Thus, unbleached kappa number alone is not a reliable indicator of bleachability for these pulps. This may be due in part to the variable hexenuronic acid content of the pulps; those with higher ratio of hexenuronic acid content to kappa number (HexA/kappa) are harder to bleach. Voltammetric analysis of the same kraft pulps in the presence of redox mediators was found to measure both the content and reactivity of residual lignin. Peak current ratios of redox mediators correlated with pulp bleachability for all pulps. These ratios may therefore provide a more accurate prediction of bleachability than unbleached kappa number.

Variation of Hexenuronic Acid During Chlorine Dioxide Bleaching of Bagasse Pulp

2017 ◽  
Vol 11 (6) ◽  
pp. 612-615
Author(s):  
Cong Gao ◽  
Shuangquan Yao ◽  
Quanfeng Lyu ◽  
Yi Dai ◽  
Lisheng Shi ◽  
...  
Keyword(s):  
Chlorine Dioxide ◽  
Hexenuronic Acid ◽  
Bagasse Pulp

scholarly journals Xylanase-Aided Chlorine Dioxide Bleaching of Bagasse Pulp to Reduce AOX Formation

BioResources ◽  
2016 ◽  
Vol 11 (2) ◽  
Author(s):  
Yi Dai ◽  
Xueping Song ◽  
Cong Gao ◽  
Sha He ◽  
Shuangxi Nie ◽  
...  
Keyword(s):  
Chlorine Dioxide ◽  
Bagasse Pulp

Extraction of hemicellulose by hot water to reduce adsorbable organic halogen formation in chlorine dioxide bleaching of bagasse pulp

2017 ◽  
Vol 96 ◽  
pp. 178-185 ◽  
Author(s):  
Shuangquan Yao ◽  
Shuangxi Nie ◽  
Huixia Zhu ◽  
Shuangfei Wang ◽  
Xueping Song ◽  
...  
Keyword(s):  
Chlorine Dioxide ◽  
Hot Water ◽  
Organic Halogen ◽  
Bagasse Pulp

Effect of hot chlorine dioxide delignification on AOX in bagasse pulp wastewater

Cellulose ◽  
2018 ◽  
Vol 25 (3) ◽  
pp. 2037-2049 ◽  
Author(s):  
Haichuan Zhang ◽  
Shuangxi Nie ◽  
Chengrong Qin ◽  
Kun Zhang ◽  
Shuangfei Wang
Keyword(s):  
Chlorine Dioxide ◽  
Bagasse Pulp

Effects of D-hot pretreatment on micro-distribution of residual lignin in sugarcane bagasse pulp and fiber properties

Cellulose ◽  
2018 ◽  
Vol 25 (8) ◽  
pp. 4423-4435 ◽  
Author(s):  
Haichuan Zhang ◽  
Chengrong Qin ◽  
Shuangxi Nie ◽  
Shuangfei Wang
Keyword(s):  
Sugarcane Bagasse ◽  
Residual Lignin ◽  
Fiber Properties ◽  
Bagasse Pulp

Removal of hexenuronic acid by xylanase to reduce adsorbable organic halides formation in chlorine dioxide bleaching of bagasse pulp

2015 ◽  
Vol 196 ◽  
pp. 413-417 ◽  
Author(s):  
Shuangxi Nie ◽  
Shuangfei Wang ◽  
Chengrong Qin ◽  
Shuangquan Yao ◽  
Johnbull Friday Ebonka ◽  
...  
Keyword(s):  
Chlorine Dioxide ◽  
Adsorbable Organic Halides ◽  
Organic Halides ◽  
Hexenuronic Acid ◽  
Bagasse Pulp

scholarly journals Kinetics of AOX Formation in Chlorine Dioxide Bleaching of Bagasse Pulp

BioResources ◽  
2014 ◽  
Vol 9 (3) ◽  
Author(s):  
Shuangxi Nie ◽  
Shuangquan Yao ◽  
Chengrong Qin ◽  
Kecheng Li ◽  
Xinliang Liu ◽  
...  
Keyword(s):  
Chlorine Dioxide ◽  
Kinetics Of ◽  
Bagasse Pulp

Absorbable Organic Halide Reduction in Chlorine Dioxide Bleaching of Bagasse Pulp from the Addition of Ammonium Thiosulfate

2017 ◽  
Vol 11 (6) ◽  
pp. 666-670
Author(s):  
Chengrong Qin ◽  
Cong Gao ◽  
Tiantian Cao ◽  
Shuangquan Yao ◽  
Huixia Zhu ◽  
...  
Keyword(s):  
Chlorine Dioxide ◽  
Organic Halide ◽  
Ammonium Thiosulfate ◽  
Bagasse Pulp
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