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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 56, Number 6
JKCSEZ 56(6)
December 20, 2012 

 
Title
A Comparative Study on Adsorption Characteristics of PCBs in Transformer Oil Using Various Adsorbents

여러 흡착제를 이용한 변압기 오일 중의 PCBs 흡착특성에 관한 비교연구
Author
Keon Sang Ryoo*, Yong Pyo Hong, Chun Ju Ahn

유건상*, 홍용표, 안찬주
Keywords
Transformer oil, PCBs, Activated carbon, Loess, Fly ash
Abstract
The aim of the present study is to explore the possibility of utilizing loess and fly ash as well as activated carbon for the adsorptive removal of PCBs in transformer oil. Here, we investigated the effect of various factors such as temperature (5, 25, 55), contact time (30 min-3 day) and adsorbent does (1, 2.5, 5, 10 g) in detail. It was found that PCBs adsorption rate from transformer oil by activated carbon is more favored than loess at the equilibrium time of 60 minutes. The equilibrium data for both activated carbon and loess is fitted well to the Freundlich isotherm model. The rate constant and activation energy of PCBs adsorption in transformer oil on each adsorbent was analyzed by fitting a kinetic model at 5, 25 and 55 oC. From the thermodynamic parameters, the PCBs adsorption process for transformer oil/activated carbon and loess system is spontaneous and endothermic in nature.
Page
692 - 699
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