Nature Environment and Pollution Technology

Vimal Chaudhary ¹, Kanchan Deep Chaudhary ¹, Nirmal Godara ¹, Bhanupriya Mordhiya ¹

Affiliations
1 Department of Chemistry, J. N. V. University, Jodhpur, Rajasthan, IN

Abstract

The effective removal of heavy metals from industrial wastewater is among the most important issues for many industrialized countries. Removal of cadmium(II) from aqueous solutions was studied using activated carbon made from stems of Salvadora persica. Batch adsorption experiments were performed as a function of pH, contact time, solute concentration and adsorbent dose. The optimum pH required for maximum adsorption was found to be 5 for cadmium. The maximum contact time for the equilibrium condition is 180 min at the sorbent dose rate of 2.5 g. The maximum efficiency of cadmium removal by activated carbon was found to be 81.7%. The results were well fitted with both Langmuir and Freundlich isotherm models.

Keywords

Heavy Metals, Water Treatment, Adsorption, Salvadora persica.

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Bhanupriya Mordhiya ¹, Kailash Daga ¹, Suresh Chandra ¹, Sonia Aggarwal ¹

Affiliations
1 Environ-Industrial Laboratory, Department of Chemistry, J.N.V. University, Jodhpur-342 001, Rajasthan, IN

Abstract

The adsorption of methylene blue dye in aqueous solution on low cost adsorbent, prepared from barks of Moringa oleifera, was studied. The adsorption equilibrium isotherms have been reported. The effect of pH, contact time, adsorbent dose and initial dye concentration on adsorption process was investigated. The adsorption equilibrium data fitted both Freundlich and Langmuir isotherm equally well. Experiment was done using batch process.

Keywords

Methylene Blue Adsorption, Activated Carbon, Moringa oleifera, Adsorption Isotherms.

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