Integrated micro-biochemical approach for phytoremediation of cadmium and zinc contaminated soils

摘要

The integrated potential of oilcake manure (OM), elemental sulphur (S~0), Glomus fasciculatum and Pseudomonas putida by growing Helianthus annuus L for phytoremediation of cadmium and zinc contaminated soils was investigated under pot experiment. The integrated treatment (2.5 g kg~(-1) OM, 0.8 g kg~(-1) S~0 and co-inoculation with G. fasciculatum and P. putida promoted the dry biomass of the plant. The treatment was feasible for enhanced cadmium accumulation up to 6.56 and 5.25 mg kg~(-1) and zinc accumulation up to 45.46 and 32.56 mg kg~(-1) in root and shoot, respectively, which caused maximum remediation efficiency (0.73 percent and 0.25 percent) and bioaccumulation factor (2.39 and 0.83) for Cd and Zn, respectively showing feasible uptake (in mg kg~(-1) dry biomass) of Cd (5.55) and Zn (35.51) at the contaminated site. Thus, authors conclude to integrate oilcake manure, S~0 and microbial co-inoculation for enhanced clean-up of cadmium and zinc-contaminated soils.