摘要
介质阻挡等离子体放电(DBDP)能在极短的时间内产生具有高能粒子轰击、高温热解、紫外光辐射等综合效应的复杂过程,利用DBDP降解水中盐酸四环素(TC),研究了盐酸四环素初始浓度、放电电压以及载气流量在中性条件下对四环素去除效果的影响,并通过动力学分析进一步论证。实验结果表明,介质阻挡放电能有效去除水中盐酸四环素,四环素的降解率随其初始浓度的增加而降低,随放电电压、载气流量的增加降解率也会增加,但载气流量对降解效果影响较大,当流量超过120 L/h后促进效果开始减弱。在放电电压为9 Kv,初始浓度25 mg/L,载气流量120 L/h中性条件下盐酸四环素的降解率达到80.25%。
Dielectric barrier plasma discharge(DBDP)can produce complex processes with comprehensive effects such as high-energy particle bombardment,high-temperature pyrolysis and ultraviolet radiation in a very short time.Tetracycline hydrochloride(TC)in water was degraded by DBDP.The effects of initial concentration of tetracycline hydrochloride,discharge voltage and carrier gas flow rate on the removal efficiency were studied,and further demonstrated by kinetic analysis.The experimental results show that dielectric barrier discharge can effectively remove tetracycline hydrochloride from water,and the degradation rate of tetracycline decreases with the increase of its initial concentration.With the increase of discharge voltage and carrier gas flow rate,the degradation rate will also increase,but the carrier gas flow rate has a great influence on the degradation effect.When the flow rate exceeds 120 L/h,the promotion effect begins to weaken.Under the neutral conditions of 9 Kv discharge voltage,25 mg/L initial concentration and 120 L/h carrier gas flow rate,the degradation rate of tetracycline hydrochloride reached 80.25%.
作者
岳维明
黄俊
刘思奇
Yue Weiming;Huang Jun;Liu Siqi(Guangde Ecological and Environmental Protection Branch of Xuancheng City,Xuancheng 242200;College of Biofood and Environment,Hefei University,Hefei 230022,China)
出处
《广东化工》
CAS
2022年第22期60-63,11,共5页
Guangdong Chemical Industry
关键词
水处理技术
介质阻挡等离子体
液中放电
抗生素
盐酸四环素
water treatment technology
dielectric barrier plasma
medium discharge
antibiotics
tetracycline hydrochloride
