Ammonium removal by modified zeolite from municipal wastewater

Article type: Research Article

Authors: ZHAO, Ya-ping | GAO, Ting-yao | JIANG, Shang-ying | CAO, Da-wen

Affiliations: The College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China | The National Engineering Center of Urban Pollution and Control, Tongji University, Shanghai 200092, China

Note: [] Corresponding author. E-mail: yaping_zhao@163.com

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.

Keywords: ammonium, modified zeolite, regeneration, municipal wastewater

Journal: Journal of Environmental Sciences, vol. 16, no. 6, pp. 1001-1004, 2004