BaCO3 nanoparticles embedded retentive and cation selective membrane for separation/recovery of Mg2+ from natural water sources

Niharika Srivastava, Kuldeep V. Joshi, Amit K. Thakur, Shobhana K. Menon, Vinod K. Shahi

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

BaCO3 nanoparticles (NPs) (20 and 100nm) were prepared using poly(vinyl pyrrolidone) (PVP) as stabilizer. The prepared NPs showed high adsorption capacity for Mg2+ in presence of other cations (Na+, Ca2+ etc.). BaCO3 nanoparticles embedded sulphonated poly(ether sulfone) (SPS) membranes were prepared, which showed Mg2+ retentive and cation selective properties. These membranes exhibited good thermal, mechanical, and chemical stabilities along with conductivity and ion-exchange capacity due to SPS matrix. Mg2+ retentive nature of these membranes was attributed to the embedded BaCO3 NPs. Further, SPS-NPE membrane was assessed suitable for electro-separation process. Electrodialytic studies confirmed very high retention values for Mg2+ in comparison with Na+ and Ca2+. The energy consumption of proposed process suggested suitability of these membranes for separation/recovery of Mg2+ from natural water resources.

Original languageEnglish
Pages (from-to)142-149
Number of pages8
JournalDesalination
Volume352
DOIs
StatePublished - 7 Sep 2014
Externally publishedYes

Keywords

  • BaCO nanoparticles
  • Ion-exchange membranes
  • Mg separation
  • Nanoparticles embedded membrane
  • Retentive membrane

ASJC Scopus subject areas

  • General Chemistry
  • General Chemical Engineering
  • General Materials Science
  • Water Science and Technology
  • Mechanical Engineering

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