Dye removal from aqueous solution using ferrite-based nanocomposite inthe photocatalytic process

Lack of pure water is the one of the major barriers in the global socio-economic development.The industrial discharge and other human activities release different kinds of chemicals into thenatural environment, contaminating available resources of water [۱]. Dyes are one of the largestpolluting groups of textile wastes and other industrial processes. Due to the adverse effects oforganic dyes on human health, several technologies have been used to treat dye-containingwastewaters, including coagulation- flocculation, biological treatment, electrochemical treatment,membrane filtration, ion exchange, absorption, chemical oxidation, and advanced oxidationprocesses. Photocatalytic oxidation is one of the effective and well-known techniques for reducingthe negative effects of environmental pollutants [۲]. The photocatalytic process involves theacceleration of a chemical reaction in the presence of substances called photocatalysts, which canabsorb quantum light with the appropriate wavelength, according to the band structure of theirorbitals. In this research, the efficiency of MgFe۲O۴/MoS۲ nanocomposite in the photocatalyticoxidation of acid blue ۱۱۳ dye was investigated. The effects of three parameters, including contacttime, pH value and the amount of catalyst on the dye degradation were studied. The optimumconditions for degradation of ۲۰ mg/l acid blue۱۱۳ were found at ۱۰.۰۷ min, and catalyst dose of۲۰.۹۵ mg under visible light irradiation. The results show that by photocatalytic oxidation processusing the synthesized nanocomposite, ۹۳.۹۱% of the dye degradation can be achieved.