Abstract
REMOVAL OF Zn(II) AND Cu(II) HEAVY METAL IONS FROM WATER AND WASTEWATERS USING INDUSTRIAL WASTE LIKE FLY ASH AS LOW COST POTENTIAL ADSORBENT

*Dr. P. P. Vishwakarma

ABSTRACT

This study evaluated the effectiveness of fly ash collected from industry in removing Cu²⁺. and Zn²⁺ from aqueous solutions. Batch adsorption studies were performed on the effects of temperature, adsorbent dosage, contact time, and initial metal ion concentration. The optimum contact time, adsorbent dosage and pH value of fly ash were 65 min, 1.2 g and 6.0, respectively. The adsorption of metal ions by the adsorbent conformed to the Langmuir isotherm. Kinetic studies show that the adsorption process follows a pseudo-second-order model. The calculated thermodynamic parameters indicate that the adsorption process is feasible and exothermic. These results suggest that the use of adsorbents in the removal of metal ions could provide an alternative approach to treating and exploiting these highly problematic invasive species.

Keywords: Fly ash, Adsorption, Cu²?, Cd²?, Adsorption isotherm, pH.


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