Accumulation and Remediation of Cadmium-polluted Soil by a Potential Cadmium-hyperaccumulator Chlorophytum comosum

Abstract

Chlorophytum comosum was used to remediate the artificially polluted soil in a pot experiment under greenhouse conditions. The results showed that the activity of soil enzyme increased significantly in soil planted with C. comosum compared to soil not planted with C. comosum, while the concentration of cadmium in the soil reduced. The accumulation at 10 mg kg⁻¹ cadmium was above 100 mg kg⁻¹, and up to 1,522 and 856 mg kg⁻¹ in the root and the aboveground part at 200 mg kg⁻¹ cadmium concentration. In conclusion, C. comosum is a potential Cd-hyperaccumulator and of great value in remediation cadmium-contaminated soils.

Keywords:

• bioaccumulation
• cadmium
• Chlorophytum comosum
• phytoremediation
• soil enzyme
• soil recovery

Notes

^aBC: Bioaccumulation coefficient: the concent of Cd in plant to the concentration t of Cd in soil (Tanhan et al., 2007).

^bTF: The concentration of Cd in the aboveground part to the concentration of Cd in the root (Mattina et al., 2003).