Naguib, A., Rashed, M., Mohammed, K., Hagaggi, N. (2025). Removal of Lead and Iron from polluted water by adsorption on peanut shell adsorbent. Aswan University Journal of Environmental Studies, 6(2), 197-219. doi: 10.21608/aujes.2025.380878.1345
Aya Mohamed Naguib; Mohamed Nageeb Rashed; Kassem A. S Mohammed; Noura Sh. A Hagaggi. "Removal of Lead and Iron from polluted water by adsorption on peanut shell adsorbent". Aswan University Journal of Environmental Studies, 6, 2, 2025, 197-219. doi: 10.21608/aujes.2025.380878.1345
Naguib, A., Rashed, M., Mohammed, K., Hagaggi, N. (2025). 'Removal of Lead and Iron from polluted water by adsorption on peanut shell adsorbent', Aswan University Journal of Environmental Studies, 6(2), pp. 197-219. doi: 10.21608/aujes.2025.380878.1345
Naguib, A., Rashed, M., Mohammed, K., Hagaggi, N. Removal of Lead and Iron from polluted water by adsorption on peanut shell adsorbent. Aswan University Journal of Environmental Studies, 2025; 6(2): 197-219. doi: 10.21608/aujes.2025.380878.1345
Removal of Lead and Iron from polluted water by adsorption on peanut shell adsorbent
1Natural resources- institute of african researches and studies - Aswan university - Aswan - Egypt
2Chemistry Department, Faculty Of Science, Aswan University - Aswan - Egypt
3Natural Resources Department, Institute of African and Nile States Researches and Studies, Aswan University - Aswan - Egypt
4Botany Department, Faculty of science, Aswan University, Aswan, Egypt
Abstract
Due to their non-biodegradable and tendency to bioaccumulate, heavy metals pose a significant danger to aquatic ecosystems. The purpose of this study is preparation of peanutshell biosorbent and investigation of the efficacy of this adsorbent in the heavy metals ( Pb and Fe ) removal of from polluted water. The peanut shell adsorbent was prepared by 1- physical activation by calcination at 300ᵒC , 500ᵒC and 800ᵒC, 2- chemical activation by 1M HCl, H3PO4 and NaOH , and 3- physical activation followed by chemical activation. The adsorption test results for Pb and Fe showed that the adsorbent prepared by calcination at 800°C followed by chemical treatment with 1M NaOH showed higher Pb and Fe removal than with the other activators. The selected adsorbent was analyzed using XRD , SEM, EDX , BET, and FTIR. High removal efficiency of Pb ions adsorption were50 mg/l metal concentration, pH 5, solution temperature 323ᵒk, contact time 30 min, and 0.5g adsorbent dose, while that for Fe removal it was observed at 50 mg/l metal concentration, pH 5, temperature 303ᵒk, contact time 90 min, and 0.1 g of adsorbent. Adsorption of Pb and Fe ions were found to be well fit to Langmuir and Freundlich isotherms, and the pseudo second order kinetic model for both heavy metals . Pb and Fe adsorption on the prepared adsorbent was endothermic and spontaneous process . The resulted absorbent was successfully applied for the removal of Pb and Fe ions from water of Lake Nasser and Lake Nubia.
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