REWAS 2013 pp 167-176 | Cite as

Thermodynamic Analysis of Lead-Fluoride Ion-Water System

  • Jiayuan Li
  • Tianzu Yang
  • Lin Chen
  • Weifeng Liu

Abstract

Based on thermodynamic data, this paper analyzed the feasibility of removing fluoride in the waste acid solution using lead ions. Lead-fluoride ion-water system E-log[F-] diagram and the solubility curve of lead fluoride at 25°C were drawn. It was found that insoluble PbF2 only exists stably in a certain concentration range of fluoride ion. With the increase of lead ion concentration, the stable area for solid lead fluoride expands and the total fluoride ion concentration decreases. Therefore, it is possible to remove fluoride ion in the waste acid solution lead ion.

Key words

Lead fluoride Lead-fluoride ion-water system Thermodynamics 

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Copyright information

© TMS (The Minerals, Metals & Materials Society) 2013

Authors and Affiliations

  • Jiayuan Li
    • 1
    • 2
  • Tianzu Yang
    • 1
  • Lin Chen
    • 1
  • Weifeng Liu
    • 1
  1. 1.School of Metallurgical Science and EngineeringCentral South UniversityChangshaChina
  2. 2.Department of Chemical Engineering and Life ScienceXiangnan UniversityChenzhouChina

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