出版社：Polish Society of Ecological Engineering (PTIE)
摘要：Nickel has been listed as a priory control pollutant by the United States Environmental Protection Agency (US EPA).Compared with other methods, the combination of vegetation and the addition of mineral sorbents to heavy metal-contaminated soils can be readily applied on a large scale because of the simplicity of technology and low cost.Halloysite and zeolite, among others, can be used for this purpose.A greenhouse study was performed to evaluate the feasibility of using natural zeolite, as well as raw and modified halloysite for the remediation of simulated Ni-contaminated soil.The soil was spiked with five doses of nickel, i.e.0 (control), 80, 160, 240 and 320 mg Ni kg-1Pb.The highest reduction of Pb content was observed in soil samples taken from pots containing 80 and 160 mg.kg-1 of Ni along with the addition of modified halloysite.The strongest effects were caused by natural zeolite, which significantly reduced the average content of chromium.Contamination at 320 mg Ni.kg-1 of soil led to the highest increases in the Ni, Pb and Cr contents of soil.
