Trace Cd(II), Pb(II) and Ni(II) ions extraction and preconcentration from different water samples by using Ghezeljeh montmorillonite nanoclay as a natural new adsorbent

Journal of Water and Environmental Nanotechnology

ARTICLE

Hassanzadeh Siahpoosh, Zahra¹  Soleimani, Majid¹ 

[1] Department of Chemistry, Imam Khomeini International University (IKIU)

关键词: water;    Nanoclay;    Solid phase extraction;    Lead;    Cadmium;    Nickel;   

DOI  :  10.7508/jwent.2017.01.006

学科分类：数学（综合）

来源: Iranian Environmental Mutagen Society

【 摘 要 】

This investigate presents the extraction-preconcentration of Lead, Cadmium, and Nickel ions from water samples using Ghezeljeh montmorillonite nanoclay or “Geleh-Sar-Shoor” (means head-washing clay) as a natural and native new adsorbent in batch single element systems. The Ghezeljeh clay is categorized by using Fourier Transform Infrared Spectroscopy (FT-IR), Scanning Electron Microscopy-Energy Dispersive Spectrometer Operating (SEM-EDS), X-ray Diffractometry (XRD), X-ray Fluorescence (XRF), Cation Exchange Capacity (CEC) measurements, Surface property valuation (SBET) by the BET method from nitrogen adsorption isotherms and Zeta potential. According to BET theory, the specific surface area of Ghezeljeh nanoclay was computed as 19.8 m2 g-1 whereas the cation exchange capacity was determined as 150 meq (100 g-1). The results of XRD, FT-IR, XRF, zeta potential, BET surface area and CEC of the Ghezeljeh clay confirm that montmorillonite is the dominant mineral phase. Based on SEM images of clay, it can be seen that the distance between the plates is nm level. For all three ions, the limit of detection, the limit of quantification, dynamic linear range, preconcentration factor, and the adsorption capacity were obtained. The result of several interfering ions was considered. The Ghezeljeh nanoclay as a new adsorbent and experimental method were effectively used for the extraction of heavy metals (Lead, Cadmium, and Nickel) in a variety of real water samples.

【 授权许可】

CC BY