Degradation of ciprofloxacin hydrochloride in a multiphase mixed system by subaquatic gas-liquid discharge plasma  

作　　者：Mengyu WANG Jianping LIANG Ke LU Zikai ZHOU Qinghua LIU Hao YUAN Wenchun WANG Dezheng YANG 王梦雨;梁建平;卢可;周子凯;刘清华;袁皓;王文春;杨德正(Key Laboratory of Materials Modification by Laser,Ion and Electron Beams,Ministry of Education,Dalian 116024,People’s Republic of China)

机构地区：[1]Key Laboratory of Materials Modification by Laser,Ion and Electron Beams,Ministry of Education,Dalian 116024,People’s Republic of China

出　　处：《Plasma Science and Technology》2024年第11期144-151,共8页等离子体科学和技术（英文版）

基　　金：supported by National Natural Science Foundations of China (Nos. 52307163 and 12305279);the China Postdoctoral Science Foundation (Nos. 2023M740498 and 2022M710590);Postdoctoral Fellowship Program of CPSF (No. GZC20230348)。

摘　　要：In recent years, antibiotic pollution has become a serious threat to human health. In this study, a gas-liquid discharge plasma is developed to degrade ciprofloxacin hydrochloride in a multiphase mixed system containing inorganic and organic impurities. The discharge characteristics are analyzed by diagnosing the applied voltage and discharge current waveforms, as well as the optical emission spectra. The work investigates how degradation efficiency is affected by applied voltage, gas flow rate, treatment time, initial concentration as well as the addition of γ-Al_(2)O_(3) pellets and peanut straw. After 70 min, the degradation efficiency of ciprofloxacin hydrochloride in the multiphase mixed system reached 99.6%. Its removal efficiency increases as the initial concentration decreases and the applied voltage increases. Besides, there is still a good degradation efficiency of ciprofloxacin hydrochloride with the addition of peanut straw.The degradation mechanism of ciprofloxacin hydrochloride is investigated through the analysis of degraded intermediates and reactive species.

关 键 词：antibiotic gas-liquid discharge multiphase mixed system ciprofloxacin hydrochloride degradation 

分 类 号：O539[理学—等离子体物理] R978.1[理学—物理]