贾凌云

个人信息Personal Information

教授

博士生导师

硕士生导师

主要任职:生物工程学院院长、党委副书记

性别:女

毕业院校:大连理工大学

学位:博士

所在单位:生物工程学院

学科:生物工程与技术. 生物化工

办公地点:知微楼519房间

电子邮箱:lyjia@dlut.edu.cn

扫描关注

论文成果

当前位置: 贾凌云 >> 科学研究 >> 论文成果

Remediation of DDTs-Contaminated Sediments through Retrievable Activated Carbon Fiber Felt

点击次数:

论文类型:期刊论文

发表时间:2014-07-01

发表刊物:CLEAN-SOIL AIR WATER

收录刊物:SCIE

卷号:42

期号:7

页面范围:973-978

ISSN号:1863-0650

关键字:Activated carbon fiber felt; DDTs; POPs; Remediation; Sediment

摘要:Addition of adsorbent to the sediments has become an effective way for in situ treatment of persistent organic pollutants (POPs) contaminated sediments in recent years. However, once the adsorbents are added to the sediments, they are difficult to be retrieved, and potential risks of POPs are still existed. In this study, we proposed a new method that used activated carbon fiber felt (ACFF) to remediate POPs-contaminated sediments with the advantage of retrievability. As an example of POPs remediation, three sediments were spiked with p, p0-dichlordiphenyltrichloroethanes (DDT), o, p'-DDT, p, p'-dichlorodiphenyldichloroethylene, and p, p'-dichlorodiphenyldichloroethane, and were allowed to age for 7, 28, or 100 days before viscose-based ACFF was added to the spiked aqueous slurry in batch experiments. The effects of ACFF on DDTs removal efficiency in these sediments were examined. It was found that ACFF could efficiently remove DDTs released from the sediments. The DDTs removal efficiency of ACFF was influenced by the initial spiking concentrations, hydrophobicity of DDTs, aging times of the contaminated sediments, and organic carbon contents of the sediments. Moreover, the removal efficiency of ACFF was enhanced by increasing the amount of ACFF, as well as by sequential replacement of ACFF. The use of retrievable ACFF could potentially be an effective method for in situ remediation of sediments contaminated with POPs.