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DOI : 10.17640/KSWST.2015.23.5.41 ,    Vol.23, No.5, 41 ~ 51, 2015
Title
Copper and TCEP(tris-2-chloroethyl phosphate) Simultaneous Removal Characteristics Using Clinoptilolite in the Artificial Seawater
김이태 I Tae Kim , 안광호 Kwang Ho Ahn
Abstract
The adsorption characteristic of clinoptilolite(natural zeolite) with respect to copper ion and TCEP has been studied in artificial seawater. The optimum pH for copper adsorption was pH level 7 and then removal efficiency of copper ion was 83.1 percentages. But in case of TCEP(tris-2-chloroethyl phosphate), TCEP adsorption rate was decreased according to the pH rise. The adsorption capacity of copper ions and TCEP was higher than in the freshwater than in sea water. Adsorption inhibition and blocking effect onto clinoptilolite surface of TCEP were mostly due to OH- ions increasing and structural properties of TCEP. An equilibrium time of 150 minutes was required for the adsorption of copper ion and an equilibrium time of 250 minutes was required for the adsorption of TCEP onto clinoptilolite in artificial seawater. As a result of copper ion and TCEP about Langmuir and Freundlich isotherms, the experimental data for copper ion were better fitted to Freundlich equation than to the Langmuir equation but TCEP data were better fitted to the Langmuir equation than to the Freundlich equation.
Key Words
Natural zeolite, Clinoptilolite, Copper, TCEP, Seawater
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