Defluoridation performance of nano-hydroxyapatite/stilbite composite compared with bone char
作者: Taju SaniLuis Gómez-HortigüelaJoaquín Pérez-ParienteYonas ChebudeIsabel Díaz
作者单位: 1Chemistry Department, Addis Ababa University, Addis Ababa, Ethiopia
2Instituto de Catálisis y Petroleoquímica, CSIC, c/Marie Curie 2, 28049 Madrid, Spain
刊名: Separation and Purification Technology, 2016, Vol.157 , pp.241-248
来源数据库: Elsevier Journal
DOI: 10.1016/j.seppur.2015.11.014
关键词: FluorideZeolitesNano-hydroxyapatiteDefluoridationBone charFluorosis
英文摘要: Abstract(#br)Fluoride contamination of drinking water is a serious problem in the Rift Valley region of Ethiopia. In this work, a nano-hydroxyapatite/stilbite (nHAST) composite was prepared based on locally available stilbite zeolites and its fluoride removal performance was compared with that of Bone Char (BC). The reaction mechanism involving the fluoride adsorption is analyzed based on kinetics and isotherm studies. In both nHAST and BC the kinetic data fitted well to a pseudo-second order kinetic model of similar characteristics. In contrast, the adsorption isotherm on the nHAST composite fitted best with the Freundlich model, whereas on BC, it correlated well with the Langmuir model, suggesting a different mechanism: adsorption of fluoride on BC was homogeneous, whereas on the...
全文获取路径: Elsevier  (合作)
影响因子:2.894 (2012)

  • hydroxyapatite 羟磷灰石层析
  • stilbite 束沸石
  • compared 肿瘤和正常组织细胞周期的比较
  • performance 性能
  • composite 复合的