CO_(2)/Ar气液相等离子体处理盐酸四环素的研究

The Treatment of Tetracycline Hydrochloride by CO_(2)/Ar Gas-Liquid Phase Plasma

研究采用温室气体、氩气(CO_(2)/Ar)作为载气,产生气液相等离子体处理水中的盐酸四环素。研究了CO_(2)/Ar气液相等离子体CO_(2)分解、活性物质产生(如O、·OH、^(1)O_(2)、H_(2)O_(2)、O_(3))及不同参数条件下对盐酸四环素的降解机理。气相方面考察了CO_(2)/Ar比例、气体流量对CO_(2)转化的影响;液相方面考察了CO_(2)/Ar比例、不同初始浓度、气体流量及初始pH对盐酸四环素降解的影响。结合光谱诊断、液相活性物质表征、相关淬灭剂,分析了不同活性物质的产生规律及对盐酸四环素降解的影响。最后检测了降解过程产生的中间产物,提出了本体系盐酸四环素降解原理及可能的降解途径。为CO_(2)利用以及水污染治理提供一个新的思路。

In this study,greenhouse gas and argon(CO_(2)/Ar)were used as carrier gas to produce gas-liquid plasma to treat tetracycline hydrochloride in water.The CO_(2) decomposition of CO_(2)/Ar gas-liquid plasma,the production of reactive species(such as OH,^(1)O_(2),O,H_(2)O_(2),O_(3)),and the degradation mechanism of tetracycline hydrochloride under different parameters were studied.In the gas phase,the effects of CO_(2)/Ar ratio and gas flow rate on CO_(2) conversion were investigated.The effects of CO_(2)/Ar ratio,different initial concentrations,gas flow rate and initial pH on the degradation of tetracycline hydrochloride were investigated in the liquid phase.Combined with the spectral diagnosis,the characterization of liquid phase reactive species,and the relevant quenching agents,the production rules of different reactive species and their effects on the degradation of tetracycline hydrochloride were analyzed.Finally,the intermediate products produced in the degradation process were detected,and the degradation principle and possible degradation pathway of tetracycline hydrochloride in this system were proposed.It provides a new idea for CO_(2) utilization and water pollution control.