Ammonium removal by modified zeolite from municipal wastewater |
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Authors: | Zhao Ya-Ping Gao Ting-Yao Jiang Shang-Ying Cao Da-Wen |
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Institution: | 1. The College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China 2. The National Engineering Center of Urban Pollution and Control, Tongji University, Shanghai 200092, China |
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Abstract: | Ammonium removal by modified zeolite, H-form and Na-form zeolite, were examined by batch-type methods. The adsorption of ammonium on modified zeolite was exothermic process. The saturation adsorption capacity of ammonium on H-form and Na-form zeolite were 21.23 and 41.15 mg/g, respectively. After ten times adsorption-desorption-readsorption cycles the standard deviations of H-form and Na-form zeolite were 6.34% and 6.59%. The zeolite adsorption process has proved cost effective and practical in reducing ammonium by H-form and Na-form zeolite in municipal wastewater from concentration 27.68 mg/L to 2.80 mg/L and 5.91 mg/L. |
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Keywords: | ammonium modified zeolite regeneration municipal wastewater |
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