Impact of soil types and root exudates on cadmium and petroleum hydrocarbon phytoremediation by Sorghum sudanense, Festuca arundinace, and Lolium perenne

With the development of industrialization, soils around world have been polluted by heavy metals and oil to different degrees in recent years, soil remediation has become a global problem. Phytoremediation wide application prospect because its environmental friendliness easy availability materials. Objective To explore effects types root exudates on removal cadmium petroleum hydrocarbon soils. Method A pot experiments with three (sandy, loamy clayey) Changning-Weiyuan area Sichuan province (citric acid, glycine, maltose) were carried out using Sorghum sudanense (Piper) Stapf., Lolium perenne L., Festuca arundinacea L. as test Plants grown contaminated at concentrations. Result The biomass S. , translocation ratio rate decreased gradually increasing concentration. promotion following order: citric acid > glycine maltose. At same pollution conditions, levels sandy, loamy, clayey sandy soil. On contrary, concentration, ratio, treated Under fresh weight F. (0.36 ~ 0.68 g) (0.51 0.99 increased significantly ( p < 0.05). total hydrocarbons degradation efficiencies high (34.27% 60.52%). Changing type exudate had significant impact Conclusion This study showed that impacted accumulation plants. could be enhanced exudates. recommend method is suitable for field mild hydrocarbons.