SciELO - Scientific Electronic Library Online

 
vol.66 issue1SYNTHESIS AND CHARACTERIZATION OF COPPER NANOPARTICLES SUPPORTED IN CARBON NANOTUBES MULTIPLE WALLS PREPARED BY CLD AND SMADEFFECT OF WI-FI RADIOFREQUENCIES ON THE CONTENT OF FATTY ACID AND ERGOSTEROL, A PRECURSOR OF VITAMIN D, IN IN VITRO CULTURES OF THE FUNGUS Serpula himantioides author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand

Journal

Article

Indicators

Related links

  • On index processCited by Google
  • Have no similar articlesSimilars in SciELO
  • On index processSimilars in Google

Share


Journal of the Chilean Chemical Society

On-line version ISSN 0717-9707

Abstract

MORALES, Daniela V.; RIVAS, Bernabé L.  and  GONZALEZ, Marianela. POLY(4-VINYLBENZYL)TRIMETHYLAMMONIUM CHLORIDE) RESIN WITH REMOVAL PROPERTIES FOR VANADIUM(V) AND MOLYBDENUM(VI). A THERMODYNAMIC AND KINETIC STUDY. J. Chil. Chem. Soc. [online]. 2021, vol.66, n.1, pp.5118-5124. ISSN 0717-9707.  http://dx.doi.org/10.4067/S0717-97072021000105118.

Ion exchange resin poly(4-vinylbenzyl) trimethylammonium chloride(P(ClVBTA)) was synthesized and its removal properties toward vanadium(V) and molybdenum(VI) were evaluated and compared with those of the Amberlite IRA-402 commercial resin. The resin was characterized by FT-IR spectroscopy, TGA, and SEM. The water absorption capacity, pH effect, Langmuir and Freundlich adsorption isotherms, and kinetic model parameters were determined. All studies were conducted through a batch equilibrium procedure. Thermodynamic parameters, including enthalpy, entropy, and free energy, were determined. The P(ClVBTA) resin showed faster and higher capacity for the removal of V(V) and Mo(VI) from a water solution than the Amberlite IRA-402 commercial resin with the same ammonium salt functional group. The higher capacity of the P(ClVBTA) resin was attributed to the higher degree of swelling, the exfoliation in the monolayer, and the small particle size.

Keywords : Resins; removal; molybdenum; vanadium.

        · text in English     · English ( pdf )