DBDP降解土壤中抗生素的实验研究——以盐酸四环素、氯霉素为例
Experimental study on DBDP degradation of antibiotics in soil——Taking tetracycline hydrochloride and chloramphenicol as example
刘梦晗 1胡素美 1黄俊 1韩雪琪 1孙奥 1张玲 1俞志敏1
作者信息
- 1. 合肥学院 生物食品与环境学院,安徽 合肥 230022
- 折叠
摘要
介质阻挡放电等离子体能在极短的时间内产生高能粒子轰击、高温热解和紫外光辐射等综合效应.以盐酸四环素和氯霉素为研究对象,利用介质阻挡放电等离子体降解土壤中盐酸四环素和氯霉素,研究抗生素初始浓度、放电电压以及载气流量对去除效果的影响,并通过正交实验进一步论证.单因素实验结果表明,抗生素的去除率与初始浓度呈负相关关系,与放电电压呈正相关关系,随载气流量先增加后降低.正交实验表明,盐酸四环素最佳降解条件为载气流量8 L/min、放电电压6 kV、初始浓度100 mg/kg,此时去除率可达到87.06％;氯霉素最佳降解条件为初始浓度100 mg/kg、载气流量0 L/min、放电电压为10 kV,此时去除率为85.12％.结论:介质阻挡放电等离子体能有效去除土壤中抗生素,在降低土壤抗生素污染方面具有巨大潜力.
Abstract
Dielectric barrier discharge plasma(DBDP)can generate comprehensive effects such as high-energy particle bombardment,high-temperature pyrolysis,and ultraviolet radiation in an extremely short period of time.The degradation of tetracycline hydrochloride and chloramphenicol in soil was studied using DBDP.The effects of initial concentration of antibiotics,discharge voltage,and carrier gas flow rate on their removal efficiency were studied,and further demonstrated through orthogonal experiments.The results of one-way experiments showed that the removal rate of antibiotics was negatively correlated with the initial concentration and positively correlated with the discharge voltage,which first increased and then decreased with the carrier gas flow rate.Orthogonal experiments showed that the best degradation conditions for tetracycline hydrochloride were carrier gas flow rate of 8 L/min,discharge voltage of 6 kV,initial concentration of 100 mg/kg,at which the removal rate could reach 87.06％;the best degradation conditions for chloramphenicol were initial concentration of 100 mg/kg,carrier gas flow rate of 0 L/min,discharge voltage of 10 kV,at which the removal rate was 85.12％.Conclusion:DBDP can effectively remove antibiotics from soil and has great potential in reducing soil antibiotic pollution.
关键词
介质阻挡放电等离子体/抗生素/土壤修复/盐酸四环素/氯霉素Key words
Dielectric barrier discharge plasma/antibiotics/soil remediation/tetracycline hydrochloride/chloram-phenicol引用本文复制引用
出版年
2024
NETL
NSTL
万方数据