ORIGINAL RESEARCH
Bioaccumulation of Cadium, Copper, Zinc,
and Nickel by Weed Species from Municipal
Solid Waste Compost
Shulan Zhao, Lian Duo
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Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences,
Tianjin Normal University, Tianjin 300387, P.R. China
Submission date: 2014-03-02
Final revision date: 2014-08-01
Acceptance date: 2014-08-03
Publication date: 2015-02-06
Pol. J. Environ. Stud. 2015;24(1):413-417
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ABSTRACT
A field experiment was conducted to evaluate the efficiency of native monocotyledonous weed species
for heavy metal phytoextraction from municipal solid waste (MSW) compost. Results showed that total contents
of cadium (Cd), copper (Cu), and zinc (Zn) in MSW compost generally exceeded the maximum levels
indicated in Chinese regulations, except nickel (Ni). The general trend of metal accumulation in plants was
Zn>Cu>Ni>Cd and accumulation differences depended on plant species. Except for Carex tristachya, the Cd,
Cu, and Ni contents in above-ground parts of four other species were within the normal values in plants. Most
plants accumulated target metals mostly in the roots. With BCF and TF values >1, Carex tristachya displayed
some Cd-hyperaccumulative characteristics, being classified as potential species for phytoextraction of Cd
from MSW compost. Other species can be considered adequate candidates for metal stabilization and soil conservation.