Effective use of iron-aluminum rich laterite based soil mixture for treatment of landfill leachate.

摘要: Abstract Landfill leachate poses environmental threats worldwide and causes severe issues on adjacent water bodies soil by direct discharge. The primary objective of this study is to analyze the efficient use compost laterite mixtures (0, 10, 20, 30 40 wt% compost/laterite) treatment investigate associated removal efficiencies under different sorption processes. Therefore, in experimental design, used for providing adsorption characteristics, activating biological properties filter. filtering process continued until major physical changes occur filter at approximately 100 days. raw experiment shows higher average values many analyzed parameters. Parameters are selected based their availability Sri Lanka. During filtering, BOD (>90%), COD (>85%), phosphate (>90%) nitrate (75–95%) show all filters. These removals mainly with biodegradation, which activated added compost. Perhaps steadily increases time, indicates denitrification excess carbon from leachate. total suspended solids (TSS) moderate high, but conversely, electric conductivity (EC) unsteady, indicating an association between iron exchange carbonate degradation. A very high efficiency reported Fe (90–100%), wide ranges Mn (30–90%), Cu (45–85%), Ni (30–93%), Cd (37–98%), Zn (15–98%), Pb (35–98%) involve heterogeneous Furthermore, normalization liquid filtrate has apparent improvements. differences (p > .05) filters significant. It can be concluded that mixed 20% optimum conditions. Further, Fourier-transform infrared (FT-IR) models media conclude multiple sorptions reveal evidence vacant sites. X-ray diffraction (XRD) analyses indicate secondary minerals gibbsite, hematite, goethite kaolinite as involved process.