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Evaluation of NH4+-N Ion Exchange Property using Natural Zeolite and Zeolite Carrier  

Lee, Kwang Hyun (Department of Environmental Energy System Engineering, Kyonggi University)
Park, Min Suk (Department of Environmental Energy System Engineering, Kyonggi University)
Joo, Hyun Jong (Department of Environmental Energy System Engineering, Kyonggi University)
Publication Information
Journal of Korean Society on Water Environment / v.25, no.5, 2009 , pp. 750-757 More about this Journal
Abstract
The ammonium ion exchange characteristics of natural zeolite were investigated to remove ${NH_4}^+-N$. The effect of water temperature, particle size and competitive cation on the exchange capacity was examined. Ammonium ion exchange capacity tended to decrease when the temperature increased from $25^{\circ}C$ to $40^{\circ}C$. Exchange capacity was increased according to the particle size of natural zeolite comes to be small. Batch isotherm experiments were conducted for measuring ammonium ion exchange capacity. The ion exchange capacity was well described either by the Langmuir isotherm model or by the Freundlich isotherm model. The ammonium ion exchange capacity ($q_m$) of zeolite carrier can be calculated $11.744mg-{NH_4}^+/g$-carrier. The ion exchange capacity of manufactured zeolite carrier was showed a similar tendency as ion exchange capacity of powder-sized natural zeolite. Therefore, zeolite carrier can be used for increasing of nitrogen removal efficiency in the wastewater treatment plants.
Keywords
Freundlich isotherm model; Ion exchange; Langmuir isotherm model; Natural zeolite; Zeolite carrier;
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Times Cited By KSCI : 1  (Citation Analysis)
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