Evaluation of strategies to minimize ecotoxic side-effects of sorbent-based sediment remediation.
Evaluation of strategies to minimize ecotoxic side-effects of sorbent-based sediment remediation.
复制标题
DOI：
10.1002/jctb.5224
复制
发表时间：
2017-08
期刊：
影响因子：
--
通讯作者：
Werner D
中科院分区：
文献类型：
--
作者：
Han Z;Abel S;Akkanen J;Werner D
在过去的15年中，用于沉积物中持久性有机污染物封存的原位吸附剂改良从实验室规模的试验稳步发展到大规模的修复应用。然而，阻碍更广泛的技术应用的是对最常用的吸附剂活性炭对敏感的栖息于沉积物中的生物（如颤蚓）的生态毒性副作用的担忧。以受多环芳烃（PAHs）污染的泰恩河沉积物和颤蚓为案例研究，对吸附剂替代品和磁性吸附剂回收作为减轻此类生态毒性副作用的潜在工程策略进行了研究。还研究了在预期应用中随着时间推移自然会发生的用新鲜泰恩河水接触处理过的沉积物的潜在益处。
磁性生物炭被确定为一种有效的多环芳烃吸附剂，其生态毒性副作用比磁性活性炭小。在这种生物炭85.1% - 100%被磁性回收后，在处理过的沉积物中未检测到对颤蚓的生态毒性副作用。结果表明，通过吸附剂回收可以减轻磁性活性炭的生态毒性影响。相比之下，反复用泰恩河水接触处理过的沉积物没有可测量到的益处。
磁性生物炭是一种用于修复多环芳烃污染沉积物的有前途的吸附剂材料。© 2017作者。《化学技术与生物技术杂志》由约翰威立父子有限公司代表化学工业协会出版。
In situ sorbent amendment for persistent organic pollutant sequestration in sediment has over the past 15 years steadily progressed from bench‐scale trials to full‐scale remediation applications. Hindering a wider technology uptake are, however, concerns about ecotoxic side‐effects of the most commonly used sorbent, activated carbon, on sensitive, sediment dwelling organisms like Lumbriculus variegatus. Using River Tyne sediment polluted with polycyclic aromatic hydrocarbons (PAHs) and L. variegatus as a case study, sorbent alternatives and magnetic sorbent‐recovery were investigated as potential engineering strategies to mitigate such ecotoxic side‐effects. The potential benefits of contacting the treated sediment with fresh River Tyne water, as would naturally occur over time in the intended applications, were studied. Magnetic biochar was identified as an effective PAH sorbent with less ecotoxic side‐effects than magnetic activated carbon. After 85.1–100% magnetic recovery of this biochar, no ecotoxic side‐effects on L. variegatus were measurable in the treated sediment. Results show that ecotoxic effects of magnetic activated carbon can be alleviated through sorbent recovery. In contrast, contacting treated sediment repeatedly with River Tyne water had no measurable benefits. Magnetic biochar is a promising sorbent material for the remediation of PAH polluted sediment. © 2017 The Authors. Journal of Chemical Technology & Biotechnology published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
登录
查看更多内容
影响因子：
4.1
作者：
Sun, Xueli;Ghosh, Upal
通讯作者：
Ghosh, Upal
影响因子：
11.4
作者：
Hale, Sarah E.;Werner, David
通讯作者：
Werner, David
影响因子：
11.4
作者：
Sparrevik, Magnus;Saloranta, Tuomo;Linkov, Igor
通讯作者：
Linkov, Igor
影响因子：
13.6
作者：
Han, Zhantao;Sani, Badruddeen;Werner, David
通讯作者：
Werner, David
影响因子：
11.4
作者：
Kupryianchyk, D.;Reichman, E. P.;Koelmans, A. A.
通讯作者：
Koelmans, A. A.