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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
chemical engineering
ZnO assisted photocatalytic degradation of acridine orange in aqueous solution using visible irradiation
Desalination, Volume 232, No. 1-3, Year 2008
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Description
A detailed investigation of photocatalytic degradation of the dye, acridine orange, has been carried out in aqueous heterogeneous medium containing ZnO as photocatalyst in a batch reactor. Visible light in the absence of ZnO has negligible effect on degradation. The disappearance of the dye, monitored spectrophotometrically, follows approximately pseudo-first order kinetics according to the Langmuir-Hinshelwood model. The total degradation of dye was tested using the chemical oxygen demand (COD) method. The addition of an optimal amount of hydrogen peroxide and potassium persulphate increases the degradation rate while NaCl and Na2CO3 decreases. The effect of addition of cationic and anionic surfactants has also been investigated. Bubbling of nitrogen in the reaction solution decreases the reaction rate. ZnO has been found experimentally to be a highly efficient photocatalyst for the degradation of acridine orange dye and hence there is a great potential in the treatment of organic pollutants such as dyes. © 2008.
Authors & Co-Authors
Pare, Brijesh K.
India, Ujain
Vikram University
Jonnalagadda, Sreekantha B.
South Africa, Durban
University of Kwazulu-natal
Tomar, Hitendra S.
India, Ujain
Vikram University
Singh, Pardeep
India, Ujain
Vikram University
Bhagwat, Vasant W.
India, Ujain
Vikram University
Statistics
Citations: 214
Authors: 5
Affiliations: 2
Identifiers
Doi:
10.1016/j.desal.2008.01.007
ISSN:
00119164