Removal of Cu(II) from leachate using natural zeolite as a landfill liner material

• Published in: Journal of hazardous materials Vol. 167; no. 1; pp. 696 - 700
• Main Authors: Turan, N. Gamze, Ergun, Osman Nuri
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier B.V 15.08.2009; Elsevier
• Subjects: Adsorption; Applied sciences; Chemical engineering; Copper - isolation & purification; Diffusion; Environmental Restoration and Remediation - methods; Exact sciences and technology; Flotation; General treatment and storage processes; Hazardous solid waste; Heavy metals; Kinetics; Landfill; Liner materials; Pollution; Solid-solid systems; Wastes; Water Pollutants, Chemical - isolation & purification; Zeolites - chemistry; Kinetics; Hazardous solid waste; Landfill; Heavy metals; Liner materials; Copper II; Second order; Waste dumping; Flotation; Migration; Adsorption capacity; Hazardous waste; Modeling; Composite material; Transport process; Pollution; Rate constant; Diffusion; Availability; Zeolite; Waste disposal; Uptake; Heavy metal; Sorption; Kinetic model; Adsorption; First order; Solid waste; Leachate
• ISSN: 0304-3894; 1873-3336
• DOI: 10.1016/j.jhazmat.2009.01.047

All hazardous waste disposal facilities require composite liner systems to act as a barrier against migration of contaminated leachate into the subsurface environment. Removal of copper(II) from leachate was studied using natural zeolite. A serial of laboratory systems on bentonite added natural zeolite was conducted and copper flotation waste was used as hazardous waste. The adsorption capacities and sorption efficiencies were determined. The sorption efficiencies increased with increasing natural zeolite ratio. The pseudo-first-order, the pseudo-second-order, Elovich and the intra-particle diffusion kinetic models were used to describe the kinetic data to estimate the rate constants. The second-order model best described adsorption kinetic data. The results indicated that natural zeolite showed excellent adsorptive characteristics for the removal of copper(II) from leachate and could be used as very good liner materials due to its high uptake capacity and the abundance in availability.