Kinetic study of removal Tylosin from contaminated water by persulfate in the presence of immobilized silver nanoparticle

The major contaminants of livestock effluent are nitrogen and organic matters; however it may contain other contaminants such as potassium, phosphorus and growth factors (hormones and heavy metals) or acute contaminants such as pharmaceuticals.Much attention has been recently devoted to the fate of pharmaceutically active compounds such as antibiotics in soil and water. Among them,tetracycline (TC) and tylosin (TYL) antibiotics were shown to be poorly biodegradable and toxic for microorganisms.Application of Ag۱+-catalyzed peroxydisulfate, as an advanced oxidation process, introduces an effectual method for wastewater treatment. The advanced oxidation processes (AOPs) based onthe in situ generation of reactive OH radical is applied. Thisradical species can quickly and nonselectively oxidize a broadrange of organic pollutants. An accelerated reaction using S۲O۸í۲ to destroy antibiotics can be achieved via chemical activation with Ag۱+ to generate sulfate radicals (SOí۴ ). In this work ,Silver ion (Ag۱+) -catalyzed peroxydisulfate was studied for the degradation of Tylosin in an aqueous medium.The effect of different parameters, such as temperature,peroxydisulfate concentration, and Ag۱+ concentrations,were investigated. Degradation efficiency was not considerable when using peroxydisulfate alone. Studies revealed that increases in temperature and in the initial concentrations of peroxydisulfate and Ag۱+ up to ۱۰۰ mM and ۰.۴ mM, respectively, enhanced pollutant degradation.

کلیدواژه ها:

Tylosin ، Kinetic ، Water and Wastewater ، Antibiotics ، Nano particle