Repeated phytoextraction of metal contaminated calcareous soil by hyperaccumulator Sedum plumbizincicola

International Journal of Phytoremediation
Tong ZhouPeter Christie

Abstract

Most studies on the phytoextraction of cadmium (Cd) and zinc (Zn) by the hyperaccumulator Sedum plumbizincicola (S. plumbizincicola) have been conducted in metal contaminated acid and neutral soils. However, little information is available on phytoremediation of calcareous soils. Two experiments were conducted to investigate the phytoextraction efficiency of S. plumbizincicola in a contaminated calcareous soil in He'nan province, north China. In a field experiment there was no significant decrease in shoot biomass production or metal (Cd and Zn) concentration in the shoots after three successive repeated phytoextractions. Repeated phytoextraction had no significant effect on the percentage distribution of Cd or Zn fractions in the soil even though the soil total Cd and Zn concentrations decreased by 32.8 and 19.7%, respectively. In a pot experiment the shoot biomass production and Zn and Cd uptake by S. plumbizincicola increased significantly with growth in metal contaminated calcareous soil amended with organic fertilizer, perlite and vermiculite. The results indicate that S. plumbizincicola can maintain sustainable uptake of Cd and Zn from the calcareous soil and enhancement of soil fertility and structure will significantly ...Continue Reading

References

Sep 11, 2002·Journal of Hazardous Materials·T Mathialagan, T Viraraghavan
Oct 19, 2006·Environmental Pollution·Patrick Audet, Christiane Charest
Jul 23, 2008·Environmental Pollution·G F KoopmansF J Zhao
May 17, 2011·Environmental Monitoring and Assessment·Xiuwu ZhangBixiong Ye
Mar 8, 2013·Chemosphere·Hazrat AliMuhammad Anwar Sajad
Dec 17, 2014·Environmental Science & Technology·Fang-Jie ZhaoSteve P McGrath

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Citations

Nov 1, 2020·International Journal of Phytoremediation·Xian'an YuPeter Christie
Dec 1, 2019·The Science of the Total Environment·Frédéric ReesJean Louis Morel

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Methods Mentioned

BETA
atomic absorption spectrometry

Software Mentioned

SPSS

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