Sustainable remediation of heavy metal contaminated soil through phytostabilization with the <i>in-situ</i> immobilization by mercapto-based palygorskite.

ABSTRACT: Phytostabilization has been widely applied to remediate mining soils contaminated with heavy metals, but the high soil toxicity often restricts plant growth and remediation efficiency. In this experiment, we investigated the effect of mercapto-based palygorskite (MPAL, applied at 2% and 4% w/w) on cadmium (Cd) and lead (Pb) phytostabilization by Chrysopogon zizanioides in soils contaminated with Cd and Pb. The results showed that soil pH did not vary under the application of MPAL but decreased during the cultivation of C. zizanioides. Compared with planting C. zizanioides alone, the application of MPAL significantly promoted the growth of C. zizanioides, enhanced its antioxidant enzyme activities, and decreased Cd and Pb concentrations in roots and shoots. Compa

SUBMITTER: Kuang H 

PROVIDER: S-EPMC12592181 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature