• Idris Baba Garba
• Mohammed Musa Lawan

Abstract: Eggshells obtained from ducks, Local chickens and improved variety chickens were used in this study as adsorbent for treatment of heavy metal contaminated water. The eggshells were categorized into two, treated (activated) and untreated adsorbents. The percentage removal capacities of the different eggshells were determined using atomic absorption spectrophotometer with a view to determine the best adsorbent among the different eggshells (duck, local and improved chickens) commonly available in Yobe State. The results indicated that 1.0g of the adsorbent from both treated and untreated duck’s eggshell have the ability to absorb 75% of lead and 69% of cadmium from contaminated water containing about 20mg of the contaminant per litre. Treated local chicken’s eggshell adsorbs the highest amount of lead up to 80%, while the untreated one adsorbs high chromium to about 69%. All the adsorbents remove high amount of cadmium, with up to about 80% adsorbed by untreated local chicken’s eggshell, followed by treated improved chicken’s eggshell with about 75% and least 65% in treated duck’s eggshell. The result of the analysis also revealed that 1.0g of treated improved chicken’s eggshell could remove about 61% of Arsenic from 20mg/L of contaminated water. Nickel was the least adsorbed by all the eggshells. The eggshells therefore served as good adsorbents for lead, cadmium and chromium and the adsorption efficiency improved greatly when the shells were activated.

Eggshell, Adsorption

"Comparative Analysis of Heavy Metal Removal Capacity of Some Selected Eggshell", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.9, Issue 11, page no.a239-a247, November-2022, Available :http://www.jetir.org/papers/JETIR2211030.pdf

"Comparative Analysis of Heavy Metal Removal Capacity of Some Selected Eggshell", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.9, Issue 11, page no. ppa239-a247, November-2022, Available at : http://www.jetir.org/papers/JETIR2211030.pdf