Removal of Eu(III) from aqueous solution using ZSM-5 zeolite

By D. Shao, Q. Fan, Jiaxing Li, Zhiwei Niu, Wang-suo Wu, Yixue Chen, Xiangke Wang. 2009

178 citations recorded by the source corpus.

Abstract ZSM-5 zeolite is characterized by XRD, FT-IR and acid–base titration in detail. The results show that the sorption site distribution of ZSM-5 zeolite is affected by ionic strength obviously; the main sorption site are =XNa, =SOH and =SO− in all pH ranges. The sorption experiments of Eu(III) on ZSM-5 zeolite indicate that the sorption is strongly dependent on pH value and on ionic strength (ranged from I = 0.001 to 0.05 mol/L NaClO4) under ambient conditions. The sorption edges of Eu(III) on ZSM-5 zeolite in 0.1 and 0.01 mol/L NaClO4 and the sorption isotherm in 0.01 mol/L NaClO4, respectively, were modeled using a quasi-mechanistic sorption model (1-site protolysis non electrostatic surface complexation and cation exchange (1-SPNE SC/CE) model). The Eu(III) sorption edges in different ionic strengths could be modeled in the pH range 3–10 using cation exchange reactions for Eu3+/Na+ and three surface complexation reactions on the sorption sites by forming =SOEu, =SOEu(OH)+ and =SOEu(OH)2 inner-sphere surface complexes successively. The Eu(III)/ZSM-5 zeolite EXAFS analysis indicates that Eu(III) on ZSM-5 zeolite can be simulated (R = 0.045) by assuming a number of coordination oxygen N = 7.7(5) at d(Eu–O) = 2.31A (σ = 0.01 A).

Subfields: Industrial and Manufacturing Engineering, Inorganic Chemistry, Mechanical Engineering

View Paper: https://www.semanticscholar.org/paper/2c73ffda9026a9f42df1cf338ee0d825fbc1f1c2

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In Industrial and Manufacturing Engineering

  1. M. Awual
  2. T. Yaita
  3. H. Shiwaku
  4. M. Hasan
  5. M. Salman
  6. Mohammed Muzibur Rahman
  7. A. Islam
  8. K. Kubra

In Inorganic Chemistry

  1. M. Awual
  2. T. Yaita
  3. H. Shiwaku
  4. M. Hasan
  5. M. Salman
  6. Mohammed Muzibur Rahman
  7. A. Islam
  8. K. Kubra

In Mechanical Engineering

  1. M. Awual
  2. T. Yaita
  3. M. Hasan

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