ABSTRACT
The removal of toxic nickel metal ions by adsorption, using powder activated charcoal (PAC) and non-conventional adsorbent modified Indian powder babhul bark (PBB), was studied at room temperature. The adsorption isotherms were obtained in a batch reactor. It is observed that, the process of uptake followed first-order adsorption rate expression and obeyed Langmuir and Freundlich models of adsorption. Effects of variations in parameters such as pH, contact time, adsorbent dose, initial Ni(II) concentration and particle size were also studied.
Subject(s)
Acacia , Charcoal/chemistry , Nickel/chemistry , Plant Bark/chemistry , Water Pollutants, Chemical/chemistry , Adsorption , Hydrogen-Ion Concentration , Particle Size , Water Purification/methodsABSTRACT
Studies on removal of AS(III) by adsorption on flyash and activated carbon powder have been carried out at room temperature (30 +/- 1 degrees C). The adsorption isotherm of AS(III) on flyash and activated carbon powder was obtained in a batch reactor. Various parameters such as pH, initial concentraction of adsorbate and absorbent dose were studied. The experimental adsorption data fitted reasonably well to the Langmuir and Freunlich isotherms for both the adsorbents. Activated carbon has been observed to have greater adsorptive capacity than flyash.
