Effect of dye auxiliaries on the kinetics of advanced oxidation UV/H2O2of Acid Orange 7 (AO7)

2008 ◽  
Vol 83 (10) ◽  
pp. 1339-1346 ◽  
Author(s):  
Ángela Anglada ◽  
María J. Rivero ◽  
Inmaculada Ortíz ◽  
Ane Urtiaga
Keyword(s):  
Advanced Oxidation ◽  
Acid Orange 7 ◽  
Acid Orange ◽  
Kinetics Of

Adsorption Kinetics of Acid Orange 7 on Nano-CeO2–TiO2 in Water

2015 ◽  
Vol 15 (9) ◽  
pp. 7280-7284 ◽  
Author(s):  
Xiaozhen Song ◽  
Bin Zhao ◽  
Mingjie Gu ◽  
Ruixing Li
Keyword(s):  
Adsorption Kinetics ◽  
Acid Orange 7 ◽  
Acid Orange ◽  
Kinetics Of

Kinetics of oxidative decolorization and mineralization of Acid Orange 7 by dark and photoassisted Co2+-catalyzed peroxymonosulfate system

Chemosphere ◽  
2007 ◽  
Vol 67 (4) ◽  
pp. 802-808 ◽  
Author(s):  
Xiaoyang Chen ◽  
Xianliang Qiao ◽  
Degao Wang ◽  
Jing Lin ◽  
Jingwen Chen
Keyword(s):  
Acid Orange 7 ◽  
Acid Orange ◽  
Kinetics Of

Kinetics of Acid Orange 7 oxidation by using carbon fiber and reticulated vitreous carbon in an electro-Fenton process

2018 ◽  
Vol 213 ◽  
pp. 279-287 ◽  
Author(s):  
Blenda Ramírez-Pereda ◽  
Alberto Álvarez-Gallegos ◽  
Jesús Gabriel Rangel-Peraza ◽  
Yaneth A. Bustos-Terrones
Keyword(s):  
Carbon Fiber ◽  
Vitreous Carbon ◽  
Fenton Process ◽  
Acid Orange 7 ◽  
Reticulated Vitreous Carbon ◽  
Acid Orange ◽  
Kinetics Of

scholarly journals Kinetics of anaerobic biodecolourisation of azo dyes

2006 ◽  
Vol 54 (2) ◽  
pp. 73-79 ◽  
Author(s):  
S. Kalyuzhnyi ◽  
N. Yemashova ◽  
V. Fedorovich
Keyword(s):  
Azo Dyes ◽  
Reaction Medium ◽  
Reduction Peak ◽  
Methyl Red ◽  
Acid Orange 7 ◽  
Acid Orange ◽  
First Order ◽  
Irreversible Reduction ◽  
Reducing Environment ◽  
Kinetics Of

Kinetics of anaerobic biodecolourisation (methanogenic environment) of four azo dyes (Acid Orange 6, Acid Orange 7, Methyl Orange and Methyl Red) was investigated with regard to their electrochemical properties as well as under variation of dye and sludge concentrations, pH and temperature. Cyclic voltammetry revealed a correlation between the potential of irreversible reduction peak of the dye and its first-order decolorisation constant. For each dye tested, this decolourisation constant was adversely proportional to dye concentration (0.086–1.7 mM) and had a saturation (hyperbolic) dependency on sludge concentration (0.04–1.1 g VSS/l), a bell-shape dependency on pH (4.0–9.0) and Arrhenius dependency on temperature (24–40 °C). Transfer from methanogenic to sulphate reducing environment led to an increase of decolorisation constant for all the dyes investigated due to the abundant presence of sulphide as a reducing agent in the reaction medium. Similar transfer to a denitrifying environment resulted in an almost complete decease of decolourisation because nitrate easily outcompetes azo dyes as an electron acceptor.

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