Vol. 7, Issue 4 (2019)
Application of response surface methodology for the biosorption of lead by banana peel
Author(s): P Dhevagi, Khan Agha Shenwari, S Priyatharshini and S Avudainayagam
Abstract: Among the various contaminants in water, the presence of heavy metals is proven to be extremely harmful due to their high toxicity and non-biodegradability. The search for new technologies to remove toxic metals from wastewaters has directed attention to biosorption, based on metal binding capacities of various biological materials. Banana peel has been taken as biosorbent for the removal of lead was attempted in the present investigation. Powdered banana peel and banana peel biochar was used for the study. In both the substrate removal percentage of Pb was increased with increasing in Pb concentration from 25 ppm to 75 ppm. Maximum lead adsorption was observed in treatment with pH 7 and 75 ppm metal concentration and it was 83.98 per cent in raw banana peel and 86.19 per cent in case of banana peel biochar. Contact time was also standardised and when the contact time reached 6h the adsorption was maximum and it was 82.39% and 84.39% in banana peel powder and banana peel biochar respectively. The functional groups like O-H, C-H, C=C, =C-H, C-F and C-Cl were observed in RBP, and C-H, =C-H and C-Cl were observed in BPB. Alkene functional group =C-H in BPB was changed to Ether C-O functional group after adsorption of Pb. The pH 7, solute concentration 75 mg L-1 with a contact time of 6 h was found to be optimum for the maximum removal of Pb. The overall results of the study with banana peel and banana peel biochar indicates that the adsorption of lead from aqueous solution spiked with different concentration was higher in biochar. Hence bananapeelbiochar can be used for heavy metal removal from wastewater.
Pages: 1495-1501 | 375 Views 69 Downloads
download (8412KB)
How to cite this article:
P Dhevagi, Khan Agha Shenwari, S Priyatharshini, S Avudainayagam. Application of response surface methodology for the biosorption of lead by banana peel. Int J Chem Stud 2019;7(4):1495-1501.
