Kinetics of azo dye formation. Micellar effects

1972 ◽  
Vol 37 (10) ◽  
pp. 1674-1676 ◽  
Author(s):  
Mark. Poindexter ◽  
Bruce. McKay
Keyword(s):  
Azo Dye ◽  
Micellar Effects ◽  
Kinetics Of

Kinetics of bacterial decolorization of azo dye with Escherichia coli NO3

2000 ◽  
Vol 75 (2) ◽  
pp. 107-111 ◽  
Author(s):  
Jo-Shu Chang ◽  
Tai-Shin Kuo
Keyword(s):  
Escherichia Coli ◽  
Azo Dye ◽  
Kinetics Of

Degradation of azo dye with dirhodium(II) caprolactamate as heterogeneous catalyst

2012 ◽  
Vol 65 (12) ◽  
pp. 2175-2182
Author(s):  
Abeer S. Elsherbiny ◽  
Sahar H. El-Khalafy ◽  
Michael P. Doyle
Keyword(s):  
Hydroxyl Radicals ◽  
Azo Dye ◽  
Degradation Kinetics ◽  
Oxidative Degradation ◽  
Total Carbon ◽  
Order Kinetic ◽  
First Order ◽  
Pseudo First Order ◽  
Kinetics Of ◽  
Degradation Of Azo Dye

The kinetics of the oxidative degradation of an azo dye Metanil Yellow (MY) was investigated in aqueous solution using dirhodium(II) caprolactamate, Rh2(cap)4, as a catalyst in the presence of H2O2 as oxidizing agent. The reaction process was followed by UV/Vis spectrophotometer. The decolorization and degradation kinetics were investigated and both followed a pseudo-first-order kinetic with respect to the [MY]. The effects of various parameters such as H2O2 and dye concentrations, the amount of catalyst and temperature have been studied. The studies show that Rh2(cap)4 is a very effective catalyst for the formation of hydroxyl radicals HO• which oxidized and degraded about 92% of MY into CO2 and H2O after 24 h as measured by total carbon analyzer.

scholarly journals Process and kinetics of azo dye decolourization in bioelectrochemical systems: effect of several key factors

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Hou-Yun Yang ◽  
Chuan-Shu He ◽  
Lei Li ◽  
Jie Zhang ◽  
Jin-You Shen ◽  
...  
Keyword(s):  
Azo Dye ◽  
Bioelectrochemical Systems ◽  
Key Factors ◽  
Dye Decolourization ◽  
Kinetics Of

Ozonation of azo dyes

1997 ◽  
Vol 35 (4) ◽  
pp. 279-286 ◽  
Author(s):  
S. Liakou ◽  
S. Pavlou ◽  
G. Lyberatos
Keyword(s):  
Mathematical Model ◽  
Azo Dyes ◽  
Azo Dye ◽  
Orange Ii ◽  
Batch Experiments ◽  
Ozone Oxidation ◽  
Ozone Pretreatment ◽  
Kinetics Of ◽  
Dye Molecule

Ozone pretreatment studies of wastewater containing a specific azo dye – Orange II - were conducted in order to assess the kinetics of ozone oxidation and to evaluate the effect of ozonation on the biodegradability of the wastewater. Batch experiments were performed at different initial concentrations of the dye, showing that ozone is capable of a rapid disruption of the dye molecule. Moreover, the production of biodegradable compounds is apparent from the evolution of COD and BOD5 measurements. A mathematical model which describes the dye elimination, the COD and BOD5 variation, and the amount of ozone reacted has been developed.

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