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Sorption of Pb (II), Cd(II) and Zn(II) by synthesized nanocrystalline sodium potassium flurophlogopite (FGP)

Sanjay Kumar Singh

Abstract


We have successfully synthesized nanocrystalline sodium potassium fluorophlogopite (FGP) crystals with controlled sizes from ≈ 25 nm to 100nm, using an organic tetrapropylammonium (TPA) hydroxide. We have been successfully synthesized material depends on the source of silicate and hydrothermal crystallization conditions. The synthesized materials were characterized by using different techniques such as X-ray diffraction, Energy Dispersive Analysis, Scanning Electron Microscope, Transmission Electron Microscopy and FTIR analysis. The use of sodium potassium fluorophlogopite materials for the environment protection is stimulated by good physico-chemical properties, e.g. selective sorption, by nontoxic nature, availability and low cost. Present work encompasses sorption of heavy metals viz; Pb (II), Cd (II) and Zn (II) on to synthesized sodium potassium fluorophlogopite (FGP). The sorption experiments were 2 performed under batch process with contact time, effect of pH, amount of sorbent, metal ion concentration and temperature variables (35-55 o C). Time of equilibration was found to be 12 h is sufficient for the saturation. Sorption was found to be pH dependent. The MINTEQA-2 software (1.60 versions) has been used for the aqueous speciation of metal ions. Speciation data showed the presence of different species at different pH.

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DOI: https://doi.org/10.37628/jcmm.v9i2.1047

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