Abstract

Removal of Copper (II) from Aqueous Solutions using Chalk Powder

S. Mumtaz Uddin^*, A. K. Azad and Rahila Firdaus

DOI : http://dx.doi.org/10.13005/ojc/290247

Abstract:

Adsorption of copper (II) from aqueous solutions on powdered chalk has been studied as a function of different parameters : contact time (t), mass of the adsorbent (w) and initial concentration (Ci) of the adsorbate. The amount of Cu (II) adsorbed increased with increased contact time and equilibrium reached at 60 minutes for powdered chalk. The minimum adsorbent dose for an optimal removal within the concentration range considered (7-30 ppm) was 1g. Maximum removal percentage was found to be 98.2. Adsorption isotherms observed were in agreement with the Langmuir adsorption isotherm. The adsorption kinetics data obtained fitted the pseudo-first order kinetics. These results showed that the powdered chalk can efficiently be used to remediate copper (II) from waste water.

Keywords:

Copper (II);l Adsorption; Chalk powder

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