Ammonium removal by modified zeolite from municipal wastewater

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 te...

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Bibliographic Details
Published inJournal of environmental sciences (China) Vol. 16; no. 6; p. 1001
Main Authors Zhao, Ya-Ping, Gao, Ting-Yao, Jiang, Shang-Ying, Cao, Da-Wen
Format Journal Article
LanguageEnglish
Published Netherlands 2004
Subjects
Adsorption
Cost-Benefit Analysis
Quaternary Ammonium Compounds - isolation & purification
Waste Disposal, Fluid - economics
Waste Disposal, Fluid - methods
Water Pollutants - isolation & purification
Zeolites - chemistry
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Summary: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.
ISSN:1001-0742
DOI:10.3321/j.issn:1001-0742.2004.06.027