title: Degradation of tetracycline in water by ultrasonic irradiation.
abstract: The objective of this work is to investigate the effectiveness of ultrasonic radiation for the degradation of tetracycline. We analyzed the influence of several operational parameters, including the solution pH, ultrasonic power, initial concentration of tetracycline, H(2)O(2) addition, and the most common anions in surface waters such as bicarbonate, nitrate and sulfate. The results showed that the ultrasonic degradation of tetracycline followed pseudo first-order kinetics. The tetracycline degradation rate is highly pH-dependent and favored at higher pH. The degradation ratio increased with increasing ultrasonic power density, but decreased with increasing the initial concentration of tetracycline. The addition of bicarbonate ions and H(2)O(2) can enhance the degradation rate. No rate variation was observed with the presence of nitrate and sulfate ions.
authors.affiliation: Shandong Polytechnic University, Jinan, China. xk_wang@spu.edu.cn
authors.forename: Xikui
authors.initials: X
authors.lastname: Wang
authors.forename: Yinan
authors.initials: Y
authors.lastname: Wang
authors.forename: Dongliang
authors.initials: D
authors.lastname: Li
mesh_terms: D000838:Anions / Q000737:chemistry; D006861:Hydrogen Peroxide / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D013016:Sound; D013752:Tetracycline / Q000737:chemistry / Q000528:radiation effects*; D014874:Water Pollutants, Chemical / Q000737:chemistry / Q000528:radiation effects*
chemical_list: D000838:Anions; D014874:Water Pollutants, Chemical; D006861:Hydrogen Peroxide; D013752:Tetracycline