Phytoextraction of heavy metals from municipal sewage sludge by Rosa multiflora and Sida hermaphrodita

Abstrakt

The aim of the study was to evaluate the efficacy of the multiflora rose var. 'Jatar' (Rosa multiflora Thunb. ex Mur) and the Virginia fanpetals (Sida hermaphrodita Rusby) to phytoextract heavy metals from municipal sewage sludge. The 6-year field experiment involved four levels of fertilization with sewage sludge at doses of 0, 10, 20, 40, and 60 Mg DM sludge · ha-1. The increasing doses of sewage sludge were found to increase significantly the yield of multiflora rose and Virginia fanpetals biomass. They also significantly elevated the content of heavy metals in these plants. The highest uptake of heavy metals by the multiflora rose and Virginia fanpetals crops was recorded at the fertilisation dose of 60 Mg DM · ha-1. Our investigations show that the Virginia fanpetals was more efficient in phytoextraction of Cr, Ni, Cu, Zn, and Cd from the sewage sludge than the multiflora rose, due to the greater yields and higher heavy metal uptake by the former plant. In turn, the multiflora rose phytoextracted greater amounts of Pb from the sewage sludge. The analyses indicate that the Virginia fanpetals can be used for phytoremediation (phytoextraction) of heavy metals contained in sewage sludge.

Autorzy

artykuł
INTERNATIONAL JOURNAL OF PHYTOREMEDIATION
Angielski
2017
19
4
309-318
otwarte czasopismo
Dozwolony użytek
2016-09-07
25
1,886
31
31