A practical approach to the degradation of polychlorinated biphenyls in transformer oil

被引：41

作者：

Wu, WH ^{[1
]}

Xu, J ^{[1
]}

Zhao, HM ^{[1
]}

Zhang, Q ^{[1
]}

Liao, SJ ^{[1
]}

机构：

[1] Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China

来源：

CHEMOSPHERE | 2005年 / 60卷 / 07期

关键词：

hydrodechlorination; nanometric sodium hydride; polychlorinated biphenyls; transformer oil; transition metal catalysts;

D O I：

10.1016/j.chemosphere.2004.11.079

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A practical and efficient disposal method for hydrodechlormation of polychlorinated biphenyls (PCBs) in transformer oil is reported. Transformer oil containing PCBs was treated by nanometric sodium hydride (nano-NaH) and transition metal catalysts. High destruction and removal efficiency (89.8%) can be attained by nano-NaH alone under mild conditions. The process exhibits apparent characteristics of a first order reaction. The reductive ability of nano-NaH was enhanced by the addition of transition metal catalysts. In the presence of TiCl4, 99.9% PCBs was hydrodechlorinated. The complex reducing reagents, Ni(OAc)(2) + i-PrONa, show extra hydrodechlorinating activity for di-chlorinated biphenyls. (c) 2004 Elsevier Ltd. All rights reserved.

引用

页码：944 / 950

页数：7

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