Decolourization of Methylene Blue in Aqueous Solution by Photocatalytic Oxidation, Fenton Oxidation and Biosorption
Citation
Nuket Kartal Temel*,1,a, Esra Bağda1,b 1 Faculty of Science, Sivas Cumhuriyet University, Sivas, Türkiye 2 Faculty of Pharmacy, Sivas Cumhuriyet University, Sivas, TürkiyAbstract
The aim of the study was to investigate decolourization of Methylene Blue (MB) in aqueous solution
using advanced oxidation processes (AOPs) and biosorption comparatively. Photocatalytic
decolourization of MB was studied using TiO2 as catalyst. The photocatalytic decolourization of MB
by direct UV irradiation alone, only TiO2 and TiO2/UV processes was investigated. It was found that
decolourization by photocatalytic process of MB increased with decreasing pH, and decolourization
rate also increased in the presence of TiO2/UV when compared to UV irradiation alone.
Decolourization of MB was also studied with using the Fenton process (Fe(II)/H2O2). Concentrations
of Fe(II) and H2O2 on decolourization ratio were investigated. The optimum catalyst to H2O2 ratio
was found 1:3 at pH 4.0. In the second part of the study, the biosorption process was conducted
with using plant gall immobilised alumina. The removal percentages were calculated with both plant
gall immobilised alumina and alumina alone. The immobilisation of plant gall increased the removal
percentages from 60-70% to 90-95%. The proposed methods (AOPs and biosorption) have both
advantages and disadvantages compared to each other.
Volume
43Issue
4URI
http://csj.cumhuriyet.edu.tr/en/download/article-file/2426189https://hdl.handle.net/20.500.12418/13971