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Phytoremediation of Three Herbaceous Plants to Remove Metals from Urban Runoff

Authors Liu, Hongwei; Wang, He; Gao, Weifeng; Liang, Hong; Gao, Dawen

Journal BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY , AUG 2019,2:103

DOI 10.1007/s00128-019-02677-z PubMed 31297552

Abstract Phytoremediation experiments were carried out to assess the ability of different herbaceous buffer strips to absorb metals. Results revealed the Medicago sativa buffer strip had the best removal capacity for copper, lead, and cadmium in the runoff and seepage flow. Copper and lead content in M. sativa were significantly higher than in Lolium perenne and Poa pratensis (p<0.05). Cadmium content in P. pratensis was significantly higher than in L. perenne and M. sativa(p<0.05). Total accumulation of copper and lead in M. sativa buffer strips was 13.45mgkg(-1) and 1.01mgkg(-1), respectively. Total cadmium accumulation was approximately 0.50mgkg(-1) in both M. sativa and P. pratensis. Overall, results indicated that using M. sativa in the buffer strips was optimal for the remediation of copper, lead, and cadmium in sewage water.

Species covered 紫苜蓿 Medicago sativa 草地早熟禾 Poa pratensis