Browse > Article
http://dx.doi.org/10.5322/JES.2009.18.9.953

Chemical Dechlorination Process of PCBs in Industrial Transformer Oil: Approach to Practical Use  

Ryoo, Keon-Sang (Department of Applied Chemistry, Andong National University)
Byun, Sang-Hyuk (Department of Applied Chemistry, Andong National University)
Choi, Jong-Ha (Department of Applied Chemistry, Andong National University)
Publication Information
Journal of Environmental Science International / v.18, no.9, 2009 , pp. 953-959 More about this Journal
Abstract
A practical and efficient disposal method for chemical dechlorination of PCBs (polychlorinated biphenyls) in transformer oil was evaluated. The transformer oil containing PCBs was treated by the PEG 600 (polyethylene glycol 600) and potassium hydroxide (KOH) along with different reaction temperatures(25, 50, 100 and $150^{\circ}C$) and times(30, 60, 240 and 480 min). The best disposal efficiency of PCBs in transformer oil was attained under the experimental conditions of PEG 600 (2.5 w/w%)/KOH (2.5 w/w%)/$150^{\circ}C$/4 hrs, showing completely removal of all PCBs containing 3-9 chlorines on two rings of biphenyl. In studying the reaction of PEG/KOH with PCBs, it confirmed that the process led to less chlorinated PCBs through a stepwise process with the successive elimination of chlorines.
Keywords
Aryl polyglycol; Dechlorination; PCBs; PEG 600; Transformer oil;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Sedlak D. L. and A. W. Andren, 1991, Aqueous phase oxidation of polychlorinated biphenyls by hydroxyl radicals, Envirion. Sci. Technol., 25, 1419-1427   DOI
2 Manzano M. A., J. A. Perales, D. Sales and J. M. Quiroga, 2004, Using solar and ultraviolet light to degrade PCBs in sand and transformer oils, Chemosphere, 57, 645-654   DOI   ScienceOn
3 Na Y, K. Kim. J. Hong and J. Seo, 2008, Determination of polychlorinated biphenyls in transformer oil using various adsorbents for solid phase extraction, Chemosphere, 73, 7-12   DOI   ScienceOn
4 Ryoo K. S., S. Kapila, R. K. Puri, A. F. Yanders and A. A. Elseewi, 2002, Evaluation of carbon for removal of PCBs from transformer mineral oil, Chemosphere, 25, 1569-1575   DOI   ScienceOn
5 PCBs 환경연구회, 2007, PCBs 이해와 대응, 학술진흥재단 PCBs 환경연구회, 5-12
6 Lee S. H. and B. Seo, 2005, The state of the art on Technologies for treatment of polychlorinated biphenyls (PCBs) pollutants, Clean Technology, 11(1), 29-39
7 Nollet H., M. Roles, P. Lutgen, P. Van der Meeren and W. Verstraete, 2003, Removal of PCBs from wastewater using fly ash, Chemosphere, 53, 655-665   DOI   ScienceOn
8 Liu X. and G. Yu, 2006, Combined effect of microwave and activated carbon on the remediation of polychlorinated biphenyl-contaminated soil, Chemosphere, 63, 228-235   DOI   ScienceOn
9 Bergeron J. M., D. Crews and J. A. McLachlan, 1994, PCBs as environment estrogens: turtle sex determination as a biomarker of environmental contamination, Environ. Health Perspect, 102, 780-781   DOI   ScienceOn
10 Sun Y., M. Takaoka, N. Takeda, T. Matsumoto and K. Oshita, 2006, Kinetics on the decomposition of polychlorinated biphenyls with activated carbon-supported iron, Chemosphere, 65, 183-189   DOI   ScienceOn
11 Takkasuga T., K. Senthilkumar, T. Matsumura, K. Shiozaki and S. Sakai, 2006, Isotope dilution analysis of polychlorinated biphenyls (PCBs) in transformer oil and global commercial PCB formulations by high resolution gas chromatography-high resolution mass spectrometry, Chemosphere, 62, 469-484   DOI   ScienceOn