22 research outputs found
Remediation of Copper and Cadmium in Contaminated Soils using Compost with Inorganic Amendments
Remediation of Copper and Cadmium in Contaminated Soils using Compost with Inorganic Amendments
Effects of amended compost on mobility and uptake of arsenic by rye grass in contaminated soil
Effects of amended compost on mobility and uptake of arsenic by rye grass in contaminated soil
Immobilization of heavy metals in soil using natural and waste materials for vegetation establishment on contaminated sites
NOVEL TECHNIQUE FOR SUSTAINABLE BROWNFIELD REMEDIATION OF ARSENIC CONTAMINATED SOILS
Contaminated land is increasingly becoming an important issue worldwide. Many metal contaminants are persistent in soil for a large number of years. Immobilisation of metals has proven to be a challenging task and a cost-effective, non-invasive and socially acceptable technology is required for its remediation. The present study involves the in-situ immobilisation of heavy metals using compost enhanced with iron oxide and/or zeolite (up to 20% w/w) the assessment of their effectiveness with respect to metals containment and greening capability. The preliminary results illustrated that the combination of compost/iron oxide yielded better results for reducing the leaching of As (95%), Cu (97%), and Cd (73%) and the compost/zeolite treatment has reduced the leaching of Zn (97%), whereas compost treatment alone reduced leaching of Pb (90%) from the contaminated soils. It was also evident from the nursery trials that higher biomass production was achieved when using compost/zeolite amendments. Overall, this study has demonstrated that zeolite/iron enhanced composts amendments have a significant potential in reducing metals bioavailability and improving plant growth