Open AccessDendroremediation of Metal and Metalloid Elements with Poplar and Willow in the Floodplain Area Downstream a Mining Hill, Tongling, China
Author(s) -
Lakchai Kataweteetham,
Gong Rong,
Jing Zhu,
Yajing Chu,
Shengquan Liu
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/453/1/012026
Subject(s) - willow , phytoremediation , hyperaccumulator , environmental science , metalloid , environmental remediation , floodplain , pollutant , arable land , arundo donax , bark (sound) , pteris vittata , environmental chemistry , agronomy , soil water , botany , ecology , chemistry , metal , biomass (ecology) , biology , agriculture , contamination , soil science , organic chemistry
Practical remediation technology is in great need to reclaim the land polluted with heavy metals and metalloids. Dendroremediation, the use of trees to remove pollutants from the environment is a cost-effective and eco-friendly technology. In this study, poplar and willow growing on the floodplain downstream a mining hill in Tongling city, China, as well as local soils were sampled to access the phytoextraction ability of different parts of the two tree species on Cu, Zn, Cd and As. The results showed that both species of the trees grew well in spite of the stress from the high content of the toxic elements, especially Cd and As. The root, bark, trunk, and branch of both species demonstrated Bio-concentration Factors (BCFs) of the four elements between 0.001 and 0.5, with Cu and Zn having higher BCFs than that of the other two elements and the bark and root having higher BCFs than the trunk and branch. Poplar showed relatively higher averaged BCFs than willow for all the elements, except As, while willow had higher averaged Translocation Factors (TFs) than poplar. Though both species are not hyperaccumulators for these elements, they were considered suitable for soil remediation and forestation in this region.