화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.22, 1-7, February, 2015
DOI10.1016/j.jiec.2014.06.017  Export Citation
Immobilization of ammonium and phosphate in aqueous solution by zeolites synthesized from fly ashes with different compositions
Xiaodong Jia†, Mulan Zhang1, Yujie Wang, Yichu Song, Yaoyao Ke, and Yunqi Wang
  • School of soil and water conservation, Beijing Forestry University, Beijing 100083, PR China
  • 1Institude of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, PR China
E-mail:
Immobilization of ammonium and phosphate by zeolites synthesized from low-calcium (LC-Z) and highcalcium (HC-Z) fly ashes is studied. LC-Z has higher ammonium immobilization capacity while HC-Z has better performance in phosphate uptake. As part of Ca2+ released from HC-Z compete with ammonium the exchangeable sites in LC-Z, LC-Z can affect phosphate immobilization of HC-Z, and HC-Z also lowers ammonium uptake of LC-Z. Separate dosing of LC-Z and HC-Z, i.e., first LC-Z and then HC-Z, is proved better than mixed dosing at simultaneous immobilization of ammonium and phosphate. The effect parameters for phosphate and ammonium immobilization of LTH-Z are investigated.
Keywords:Industrial and municipal wastewater;Fly ash;Synthesized zeolite;Ammonium and phosphate immobilization
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