The regulating effects and mechanism of biochar and maifanite on copper and cadmium in a polluted soil-Lolium perenne L. system.

ABSTRACT: Arable land polluted by copper (Cu) and cadmium (Cd) is a widespread problem. The use of biochar and/or clay mineral as a soil amendment can effectively solidify heavy metals in the soil. We applied biochar (BC), iron modified biochar (Fe-BC), maifanite (MF, a kind of clay minerals), a combination of BC with MF (BC:MF), and Fe-BC with MF (Fe-BC:MF) at a 2 wt % dose as soil amendments to study their ability to prevent Cu and Cd from accumulating in ryegrass (Lolium perenne L.). We found that after 90 days of cultivation, the Cd and Cu content both significantly decreased in ryegrass shoots from 2.06 and 209.3 mg kg^-1 (control) to 1.44-2.01 and 51.50-70.92 mg kg^-1, respectively, across treatments (p < 0.05). Similarly, the bioconcentration factor (BCF) for

SUBMITTER: Ding Y 

PROVIDER: S-EPMC8359803 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature