Journal
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
Volume 21, Issue 7, Pages 5201-5210Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s11356-013-2089-8
Keywords
Hydrodechlorination; Polychlorinated biphenyls; nZVI; Pd/Fe bimetallic nanoparticles; E-waste; Soil remediation
Categories
Funding
- Science and Technology Foundation of Zhejiang Province, China [2009C13003]
- National High Technology Research and Development Program of China [2012AA06A203]
- National Natural Science Foundation of China [41271334, 81001475]
- Science and Technology Development Foundation of Hangzhou [20101131N05]
Ask authors/readers for more resources
Soil pollution by polychlorinated biphenyls (PCBs) arising from the crude disposal and recycling of electronic and electrical waste (e-waste) is a serious issue, and effective remediation technologies are urgently needed. Nanoscale zerovalent iron (nZVI) and bimetallic systems have been shown to promote successfully the destruction of halogenated organic compounds. In the present study, nZVI and Pd/Fe bimetallic nanoparticles synthesized by chemical deposition were used to remove 2,2',4,4',5,5'-hexachlorobiphenyl from deionized water, and then applied to PCBs contaminated soil collected from an e-waste recycling area. The results indicated that the hydrodechlorination of 2,2',4,4',5,5'-hexachlorobiphenyl by nZVI and Pd/Fe bimetallic nanoparticles followed pseudo-first-order kinetics and Pd loading was beneficial to the hydrodechlorination process. It was also found that the removal efficiencies of PCBs from soil achieved using Pd/Fe bimetallic nanoparticles were higher than that achieved using nZVI and that PCBs degradation might be affected by the soil properties. Finally, the potential challenges of nZVI application to in situ remediation were explored.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available