Statistical investigation of the cotton dyeing kinetics of CI Reactive Black 5 dye

2016 ◽  
Vol 132 (2) ◽  
pp. 130-134
Author(s):  
Agah Oktay Özdemir ◽  
Bülent Çağlar ◽  
Mustafa Tutak ◽  
Oğuz Demiryürek
Keyword(s):  
Statistical Investigation ◽  
Reactive Black 5 ◽  
Kinetics Of ◽  
Cotton Dyeing ◽  
Dyeing Kinetics

scholarly journals The influence of surfactant structure on the dyeing of polyamide knitting with acid dyes

2018 ◽  
Vol 24 (2) ◽  
pp. 117-125
Author(s):  
Nebojsa Ristic ◽  
Ivica Dodic ◽  
Ivanka Ristic
Keyword(s):  
Nonionic Surfactants ◽  
Significant Contribution ◽  
Polyamide 6 ◽  
Acid Dyes ◽  
Kinetic And Thermodynamic Parameters ◽  
Slowing Down ◽  
Dyeing Process ◽  
High Utilization ◽  
Kinetics Of ◽  
Dyeing Kinetics

The influence of nonionic and anionic surfactants on the dyeing kinetics of polyamide 6 knitting was studied in this work. The influence of surfactants on the dyeing process is presented by determining the kinetic and thermodynamic parameters of dyeing. Nonionic surfactants create unstable polydisperse associates which reduce the concentration of individual ionic forms of dyes in the solution, slowing down the dyeing process, with the dyeing having higher leveling. Interactions were confirmed by measuring the cloud point of nonionic surfactants and they are stronger with more hydrophobic dye and are related to the results of the studied dyeing kinetics. The anionic surfactant as a retarding agent, which behaves like a colorless dye in the studied dyeing system, makes a significant contribution even at concentrations of 0.5 and 1 g/dm3, indicating the conclusion that the surfactant concentration in a dyeing solution should be optimized by previous trials, so that the process would be efficient with high utilization of dye.

scholarly journals Ecologically friendly chitosan-montmorillonite bio-nanocomposite as adsorbent for textile dyes from aqueous solutions

2017 ◽  
Vol 49 (4) ◽  
pp. 419-429
Author(s):  
Natasa Jovic-Jovicic ◽  
Predrag Bankovic ◽  
Zorica Mojovic ◽  
Bojana Nedic-Vasiljevic ◽  
Sanja Marinovic ◽  
...  
Keyword(s):  
Textile Dyes ◽  
Langmuir Model ◽  
Reactive Black 5 ◽  
Freundlich Model ◽  
Kinetics Of Adsorption ◽  
Order Of Kinetics ◽  
Pseudo Second Order ◽  
Ir Analysis ◽  
Acid Orange 10 ◽  
Kinetics Of

The bio-nanocomposite of montmorillonite and natural biopolymer chitosan (C-MM) was synthesized. Intercalation of chitosan in form of monolayer into the interlamellar space of montmorillonite was confirmed by XRD and IR analysis. The adsorption of textile dyes: Acid Yellow 99 (AY99), Acid Orange 10 (AO10) and Reactive Black 5 (RB5) onto C-MM was investigated. The adsorption was performed with the respect to adsorption time, pH and initial dye concentration. The kinetics of adsorption obeyed pseudo-second-order of kinetics and was the most efficient in acidic pH. Langmuir model best described the adsorption of AY99 and AO10 , while RB5 adsorption isotherm was best fitted with Freundlich model.

Kinetics of decolorization and mineralization of the azo dye Reactive Black 5 by hydrogen peroxide and UV light

2001 ◽  
Vol 44 (5) ◽  
pp. 295-301 ◽  
Author(s):  
A. Mohey El-Dein ◽  
J.A. Libra ◽  
U. Weismann
Keyword(s):  
Hydrogen Peroxide ◽  
Uv Light ◽  
Anaerobic Bacteria ◽  
White Rot Fungi ◽  
White Rot ◽  
Aerobic Biodegradation ◽  
Reactive Black 5 ◽  
Sulfate Reducing ◽  
Facultative Anaerobic Bacteria ◽  
Kinetics Of

C.I. Reactive Black 5 is one of the most used reactive dyes for textile finishing. It is a diazo dye, which can be decolorized by facultative anaerobic bacteria, sulfate reducing bacteria and aerobic white rot fungi. Mineralization by microorganisms has proven difficult. Advanced oxidation processes are promising alternatives for the decolorization and mineralization of Reactive Black 5, alone and in combination with aerobic biodegradation. The kinetics of the decolorization of Reactive Black 5 using a combination of hydrogen peroxide and UV radiation have been investigated. The rate of decolorization is first order with respect to dye concentration. It is enhanced with increasing hydrogen peroxide concentrations up to an optimum value. In our model we have correlated an empirical reaction rate expression which considers the contribution of both hydrogen peroxide and UV flux radiation based on the reaction kinetics. This empirical correlation agrees well with the experimental data for these conditions. Complete decolorization corresponded with 40-50% mineralization of the dye. Further mineralization can be achieved with extended radiation time.

scholarly journals Photocatalytic degradation of reactive black 5 on the surface of tin oxide microrods

2018 ◽  
Vol 16 (5) ◽  
pp. 773-781 ◽  
Author(s):  
Shanza Rauf Khan ◽  
Muhammad Umar Khalid ◽  
Saba Jamil ◽  
Songnan Li ◽  
Aiman Mujahid ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Tin Oxide ◽  
Degradation Kinetics ◽  
Xrd Analysis ◽  
Sem Analysis ◽  
Reactive Black 5 ◽  
Unit Cells ◽  
High Concentrations ◽  
Co Precipitation ◽  
Kinetics Of

Abstract A simple co-precipitation technique is proposed for synthesis of tin oxide (SnO2) microrods. Stannous chloride and urea were used during synthesis. X-ray powder diffraction (XRD) analysis revealed that the annealed product consists of SnO2 microrods having tetragonal unit cells, while scanning electron microscopy (SEM) analysis revealed the rod-like morphology of a synthesized product. These synthesized microrods are used as photocatalyst for the degradation of reactive black 5 (RB5). Degradation kinetics of RB5 are monitored under daylight in different concentrations of hydrogen peroxide (H2O2) and catalyst. The percentage of RB5 conversion is also calculated at various concentrations of hydrogen peroxide and catalyst which demonstrate that RB5 shows high catalytic degradation at high concentrations of hydrogen peroxide and catalyst.

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