Reuse of residues/wastes as a sustainable solution for landfill leachate contaminated groundwater

In order to increase the reuse of wastes and residues, as required by Waste Framework Directive, potential use waste, residue natural minerals low-cost permeable reactive barrier (PRB) materials was investigated. The performance a kitchen waste compost, sepiolite steel slag compared with that volcanic slag, pumice activated carbon in removing specific contaminants from landfill leachate. experiments represented removed 27% ammonium (NH4+), 75% chemical oxygen demand (COD) 100% phosphate (PO43–), zinc (Zn2+) nickel (Ni2+) Volcanic exhibited removal efficiencies 50% COD PO43– 20% NH4+, Zn2+, 65% PO43–. were also checked for their releasing unwanted constituents different levels solute (e.g., PO43–, SO42–, NH4+) release. Among reactives, found be material reflecting minor release Cd2+ Ni2+), but delivering 40, 50, 65, 95, 97, 98, 98 Ni2+, COD, Cl–, F–, NH4+ respectively. results show studied have reactives PRB systems treating high strength contaminant plumes.