个人信息Personal Information
教授
博士生导师
硕士生导师
性别:男
毕业院校:大连理工大学
学位:博士
所在单位:电气工程学院
学科:环境工程. 电工理论与新技术. 高电压与绝缘技术
办公地点:大连理工大学电气工程学院静电所
Remediation of chloramphenicol-contaminated soil by atmospheric pressure dielectric barrier discharge
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论文类型:期刊论文
发表时间:2012-01-15
发表刊物:CHEMICAL ENGINEERING JOURNAL
收录刊物:SCIE、EI
卷号:180
页面范围:99-105
ISSN号:1385-8947
关键字:DBD plasma; Soil remediation; Antibiotics; Chloramphenicol
摘要:The remediation of antibiotics-contaminated soil using dielectric barrier discharge (DBD) plasma at atmospheric pressure was investigated in this study. Experimental results showed that the degradation efficiency of chloramphenicol (CAP) approached 81% after 20 min of plasma treatment. Increasing applied voltage was beneficial for CAP decomposition, due to higher production of active species. Experiments conducted under different gas atmospheres (O-2, air, N-2, Ar) indicated that O-3 made a major contribution to CAP degradation. Large oxygen flow rate favored the abatement of CAP in soil and the optimal soil moisture content was found as 10%. As iron element abounded in soil, the effect of Fe-0 with different levels was examined and the improvement on CAP degradation was obtained. The system of DBD plasma performed a high level decomposition with initial CAP concentration between 200 and 1000 mg kg(-1). CAP molecules experienced O-H, phenyl-N bonds rupture and dechlorination, oxidation reactions through identifying intermediates of CAP degradation using HPLC/MS. Based on HPLC/MS analysis, a possible pathway of CAP degradation in soil in this system was also proposed. (C) 2011 Elsevier B.V. All rights reserved.