The high hardness of ground water causes some problems in household and industrial
use. Therefore, this research was carried out. Several parameters have an impact on the
adsorption behavior of Ca2+ and Mg2+ onto clay mineral from aqueous solution, i.e. pH,
exchange time, original ions concentration, and temperature. All factors were carried out
through batch technique. Optimum pH for Ca2+ and Mg2+ adsorption was found to be 6.0.
As well as some thermodynamic parameters were calculated ΔG, ΔS and ΔH indicating
adsorption was spontaneous, wantonness and endothermic. The isotherm modeling was
investigated, and the results were showed that Freundlich isotherm model more fitted than
Langmuir, indicating the presence of heterogeneous sites for Ca2+ and Mg2+adsorption.
Real Time Impact Factor:
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Author Name: Mahmoud Fathy
URL: View PDF
Keywords: Kaolinite; Smectite Composite; Adsorption; Hardness; Softening; Calcium; Magnesium
ISSN: 2517-7427
EISSN:
EOI/DOI: 10.31021/jwt.20181107
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