Sorption of cadmium ions from aqueous solution by manganese nodules leached residue.

TL;DRAbstract

Different industrial wastes, such as those from mining, electro-plating, lead smelting and metal finishing industries, etc., discharge significant amounts of heavy metals in various forms. Cadmium is of particular interest because of its high toxicity and its widespread presence in the industrial effluents. In the present study, the leach residue generated from processing of polymetallic sea nodules by reduction roast – ammonia leaching was utilized for removal of cadmium. Physico-chemical characterization of leach residue showed that leached residue was highly porous with reasonably high surface area, which was about 60.91 m2/g. Effects of various parameters like time, initial Cd(II) concentration, adsorbent dose, pH on cadmium adsorption were studied. The results showed that the equilibrium for Cd(II) adsorption was attained after 30 min. contact time (Fig. 1). It was found that an increase in the adsorbent dose with constant Cd(II) concentration resulted in greater metal removal fro

Chat with Paper

AI Agents for this Paper