Nwankwo, O.D.Ewuim, S.C.Mogbo, T.C.2023-12-142023-12-142015-09-21Application of rice husk and its ash in cadmium removal from aqueous solution. Pakistan J. Biol Sci. 8(5) 721 -725. Mahvi, A.H. (2008). Application of Agricultural fibers in pollution removal from aqueous solution, hit J Environ Sc Tech 5 (2): 275 - 285. Mahvi, A.H., Nouri, J., Omrani. GA. and Gholami, F (2007a). Application of Platanus orientalis leaves in removal of cadmium from aqueous solution, world Appli. Sci. J 2(8): 40-44. Menahan, S.E. (1994). Environmental Chemistry. Lewis Boka Ralon. Mohan, S., Gandhimathi.R., Sreelakshmi,G(2008). Isotherm studies for heavy metal adsorption on rice. Asian J. of Water, Environment and Pollution. 5(2):71-7S. Muhamad, N., Parr, J., Smith, D.M. and Wheatley, D.A.(1998). Adsorption of heavy metals in slow sand filters. In: Proceeding of the WEDC conference on sanitation and water for all, Islamabad, Pakistan. 346-349. Namasivayam, C., and Ranganthan, K. (1995). Removal off Cd(ii) from wastewater by adsorption on wastewater Fe(ii)/ Cr(iii) hydroxide. Water Res^ 29 (7): 1737 - 1744. Nasim, A.K., Shaliza., I. and Piarapakaran, S . (2004). Elimination of Heavy metal from wastewater using Agricultural waste as adsorbent. Malaysian J. Sci. 23:43 - 51. Papic, S., Koprivanac, N., and Meter, A. (2000). Optimizing polymer induced flocculation process to remove the active dyes from wastewater. Environ Technol. 21:97-105. Peternele, W.S, Winkler - Hechenleitner, A A. and Pineda, E.A.G (1999). Adsorption of Cd(ii) and Pd(ii) onto functionalized formic lignin from sugar cane Bagasse. Biores Technol. 68 : 95 - 100. Raghuvanshi, Kaushik,C.P.,(2004).Kinetic Studies of Methylene blue Dye Biosorption on Baggase. Appl Ecol and Environ Res. 2(7):35-43. Raji, C. and Anirudhan, T.S.(1997). Chromium(VI) adsorption by sawdust carbon: kinetics and equilibrium. Indian J. of Chemical Tech. 4(5):22S-237. Saikaew, W., Kaesam. P., and Saikaew, W.(2009). Pomelo peel: Agriculturl waste for Biosorption of cadmium ions from aqueous solution. World Academy of Sci. Engineering and Tech. 56. Samarghandi, M.R., Nouri, J.. Mesdaghinia, A.R., Mahvi A.H., Naser, S., and Vaezi, F. (2006). Efficient removal of phenol, lead and cadmium by means of UV/TlOi/HjO? processes .hit J Environ Sci Tech, 4(i): 19-25. Sun, G and Shi. W.(199S). Sunflower stalks as S.P., SinghJR. and 85https://keffi.nsuk.edu.ng/handle/20.500.14448/6306Melon husk, a readily available agricultural waste product was used as a low-cost potential adsorbent to remove cadmium and from industrial effluents. Adsorption studies were carried out on two different activated melon husks as afimetion of parameters such as contact lime, adsorbent dosage and adsorbate concentration. Cadmium removal was found to be dependent on the three parameters with maximum removal attained at 50 min with l.Og for sodium hydroxide (NaOH) activated melon husks and at 70 min with 0.6 g for sulphuric acid (H7SO4) activated melon husk. The metal was mostly removed at low adsorbate concentration. Adsorption isotherms correlated well with both Langmuir and Freundlich isotherm models and their R2 values are 1 for both. Experimental data were also evaluated to find out kinetic characteristics of the adsorption process. Adsorption process for the target heavy metal ion was found to follow pseudo-second order adsorption kinetics. While their? values are 0.7979 and 0.8486 for both H2SO4 and NaOH modified melon husks. The r values showed that both H2SO4 and NaOH modified melon husks are efficient adsorbents with NaOH more efficient. Activated melon husk, a readily available adsorbent was found to be efficient in the uptake of Cd(ll) ions in industrial effluents, thus, making it an excellent alternative for the removal of heavy metals from water and waste waterAdsorbent, Bioadsorption, Effluent. Melon husk, Sulphuric acid, sodium hydroxide, cadmiumArticle