The use of hydrogen peroxide and sky stabilizer agent in bleaching process of textile fabrics

2019 ◽  
Author(s):  
Ab Dulmalik Khaliq ◽  
Achmad Chafidz ◽  
Faisal Rasjid Maddun ◽  
Hafizh Rafi Herimawan ◽  
Ghalib Muhammad Yusuf ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Bleaching Process ◽  
Textile Fabrics

scholarly journals Bleaching Process Investigation of Tunisian Dromedary Hair

ISRN Textiles ◽  
2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
T. Harizi ◽  
S. Dhouib ◽  
S. Msahli ◽  
F. Sakli
Keyword(s):  
Mechanical Properties ◽  
Hydrogen Peroxide ◽  
Adverse Effects ◽  
Oxalic Acid ◽  
Review Of The Literature ◽  
Bleaching Process ◽  
Bleaching Efficiency

Successful bleaching of pigmented fibres was, generally, evaluated by a maximum whiteness, a minimum yellowness, and less damage to the bleached fibers. A review of the literature reveals that many studies on pigmented fibre bleaching are concerned with improving the whiteness and mechanical properties of bleached fibres. In this study, we investigate the effects of the hydrogen peroxide concentration, bleaching time, and clarification bath on the bleaching efficiency of Tunisian dromedary hair. It was showed that 30 min bleaching time gives better result in term of whiteness. However, an increased bleaching time gives an excessive damage to the bleached fibers. Further, the damage incurred by the dromedary hair was more important than that for wool, as is shown by the tenacity results. We found that oxalic acid, which is used for rinsing dromedary hair (after bleaching), provides improved results in term of whiteness obtained with bleaching. Certainly, oxalic acid made it possible to remove the maximum of iron remaining on fibre after bleaching. Bleaching methods demonstrate the excessive damage incurred by the fibre when using hydrogen peroxide particularly with raise concentration. This damage leads to adverse effects on the tenacity fibre.

Study on Magnesium Hydroxide-Based Hydrogen Peroxide Bleaching Process of Nigra poplar CTMP

2011 ◽  
Vol 233-235 ◽  
pp. 1328-1331 ◽  
Author(s):  
Qiang Zhao ◽  
De Zhi Sun ◽  
Ming Yang Zhang ◽  
Su Min Kang
Keyword(s):  
Hydrogen Peroxide ◽  
Reaction Time ◽  
Magnesium Hydroxide ◽  
High Yield ◽  
Pulp Yield ◽  
Pulp Bleaching ◽  
Bleaching Process ◽  
Peroxide Bleaching ◽  
Bleaching Condition ◽  
Pulp Consistency

The Mg(OH)2-based peroxide bleaching process of Nigra poplar CTMP pulp was confirmed. The optimal bleaching condition were as follows: 4% H2O2,1% Mg(OH)2, 15% pulp consistency, the reaction temperature was 80°C and the suitable reaction time was 2 hours. The Mg(OH)2-based bleaching process shows significant benefits over sodium hydroxide process. In contrast, magnesium hydroxide bleaching generates higher pulp yield and lower effluent COD at the same chemical dosage. The study shows peroxide bleaching of CTMP pulp with magnesium hydroxide as alkali source is to be an option for the high-yield pulp bleaching.

Studies on Bleaching Process with Chlorine Dioxide on Cotton Fabric

2011 ◽  
Vol 233-235 ◽  
pp. 934-937
Author(s):  
Xiang Xia Liu ◽  
Yong Tang Jia ◽  
Jian Feng Di ◽  
Jia Jie Lu
Keyword(s):  
Hydrogen Peroxide ◽  
Cotton Fabric ◽  
Chlorine Dioxide ◽  
Capillary Effect ◽  
Bleaching Process

This paper discussed the bleaching process with chlorine dioxide on cotton fabric. Tests of the whiteness, capillary effect, and strength were made and the best bleaching process with chlorine dioxide was determined. Studies showed that compared with the conventional bleaching process of hydrogen peroxide, the whiteness and strength of cotton fabric treated with chlorine dioxide were higher and the capillary values was similar. Chlorine dioxide can find its good application because of its good properties and low pollution.

Study on TCF Bleaching of Reed Displacement Cooking Pulp

2013 ◽  
Vol 726-731 ◽  
pp. 543-547
Author(s):  
Ting Ting Fan ◽  
Ying Han ◽  
Guang Wei Sun ◽  
Jing Hui Zhou
Keyword(s):  
Hydrogen Peroxide ◽  
Peracetic Acid ◽  
Optimal Conditions ◽  
Experimental Conditions ◽  
Environment Friendly ◽  
Bleaching Process ◽  
Paper Making ◽  
Bleached Pulp ◽  
Method Yield ◽  
Temperature Time

With the improvement of environmental protection requirements, paper-making enterprises are imperative to eliminate pollution directly in production. This paper aims to adopt environment-friendly bleaching method, yield good quality pulp products. Op-Pa-P bleaching process of reed displacement cooking pulp is studied in this paper (O-oxygen, P-hydrogen peroxide, Pa-peracetic acid ). The experimental conditions of Op and Pa stage were optimized respectively. It included oxygen pressure, temperature, time in Op stage and charge of peracetic acid, temperature, time in Pa stage. The results show that the optimal technological conditions of Op are: 0.9Mpa, 100°C, 70min, Op stage can make brightness increase by 57.3%, viscosity decrease by 25% and KMnO4 number reduce to 2.6. Pa stage optimal conditions are Pa charge 1.5%, 70°C, 75min, brightness reached to 79.1 %ISO, KMnO4 number to 1.0, viscosity to 631mL.g-1. The brightness of P bleached pulp reached to 84.8%ISO, viscosity 601 mL.g-1, KMnO4 number 0.8.

Photosensitized Delignification of Residual Lignin and Chemical Pulp from Eucalyptus grandis Wood

Holzforschung ◽  
2002 ◽  
Vol 56 (6) ◽  
pp. 595-600 ◽  
Author(s):  
D. Da Silva Perez ◽  
A. Castellan ◽  
A. Nourmamode ◽  
S. Grelier ◽  
R. Ruggiero ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Methylene Blue ◽  
Eucalyptus Grandis ◽  
Photochemical Reactions ◽  
Size Exclusion ◽  
Residual Lignin ◽  
Bleaching Process ◽  
Chemical Pulp ◽  
Exclusion Chromatography ◽  
Unbleached Pulp

Summary Bleached pulps were obtained from a Eucalyptus grandis peroxyformic/formic acid chemical pulp using oxygen, hydrogen peroxide, photosensitizers (methylene blue, Fe (II) 4,4′,4″,4‴-tetrasulfophthalocyanine, hemin, hematoporphyrin) and/or TiO2. Residual lignin of unbleached pulp, isolated and characterized by size exclusion chromatography, 31P NMR and thioacidolysis, was used to study the photochemical reactions occurring during the bleaching process. The main reactions were conversion of phenolic aromatic units into carboxylic acids and cleavage of the β-O-4 ether bonds leading to a depolymerization of the lignin framework into smaller fragments.

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