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 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.
Zhao
Ya-Ping
YP
The College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China. yaping_zhao@163.com
Gao
Ting-Yao
TY
Jiang
Shang-Ying
SY
Cao
Da-Wen
DW
D000327:Adsorption; D003362:Cost-Benefit Analysis; D000644:Quaternary Ammonium Compounds / Q000302:isolation & purification*; D014865:Waste Disposal, Fluid / Q000191:economics / Q000379:methods*; D014873:Water Pollutants / Q000302:isolation & purification*; D017641:Zeolites / Q000737:chemistry*
D000644:Quaternary Ammonium Compounds; D014873:Water Pollutants; D017641:Zeolites