Adsorption of Heavy Metals from Contaminated Water using Leachate Modular Tower

The heavy metals (HMs) and metalloids such as Cr(VI), As(Ill), Pb(II) in contaminated water are toxic even at trace levels have caused devastating negative health impacts on human beings. Hence, the effective adsorption of these from is important to protect biodiversity, hydrosphere ecosystems, In this study, a leachate modular tower (LMT) was developed for singular purpose adsorbing HMs. LMT contained nano-slag liner, which synthesized slag. blended different proportions 90:10; 80:20, 70:30, 60:40, 50:50 combined mass clay nano-slag, evaluate most efficient ratio blends capable HMs with 100% efficiency. A series tests were performed capacity embedded liners. Attenuation periods 2, 5, 7, 10 days temperature 500 °C also selected improve sorption rate uptake Subsequently, effluents subjected inductive coupled plasma spectrometry (ICP-MS) concentrations percentages adsorbed HMs, calculated using pseudo-first-order model. results revealed that removal 98%As, 99%Cd, 99.9% Pb achieved 50%:50% soil liner equilibrium period. Furthermore, 98%Zn, 95.45%Cu, 93.3%Fe, 97%Ni, 89% Hg upon further investigation same dosage conditions. scanning electron microscopy (SEM) demonstrated some traces absorbed found surfaces, indicating significant changes microstructure. indicated increased significantly due elevated temperature, aluminosilicate structure, prolonged attenuation period, associated an pH level higher cation exchange (CEC), liner. Doi: 10.28991/CEJ-2023-09-06-017 Full Text: PDF