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- Title
Co-remediation of Ni-contaminated soil by halloysite and Indian mustard (Brassica juncea L.).
- Authors
Radziemska, Maja; Mazur, Zbigniew; Fronczyk, Joanna; Matusik, Jakub
- Abstract
The effects of increasing nickel contamination of soil on the update of selected microelements by Brassica juncea L. in the presence of raw halloysite (RH) and halloysite modified by thermal treatment (calcination) at 650°C (MH) were investigated experimentally. Such treatment causes partial dehydroxylation and enhances mineral-adsorption properties towards cations. In a vegetative-pot experiment, four different levels of Ni contamination, i.e. 0 (control), 80, 160, 240 and 320 mg kg-1 were applied in the form of an analytical-grade NiSO4·7H2O solution mixed thoroughly with the soil. Among the minerals which were added to soil to alleviate the negative impact of Ni on plant biomass, MH had a particularly beneficial effect on the growth of B. juncea L. The amount of Ni, Zn, Cu, Mn, Pb and Cr in Indian mustard depended on the Ni dose and type of accompanying mineral structure. The average accumulation of trace elements in B. juncea L. grown in Ni-contaminated soil follow the decreasing order Mn > Zn > Cu > Ni > Pb > Cr.
- Subjects
HALLOYSITE; SOIL remediation; NICKEL in soils; BRASSICA juncea; TRACE element content of soils; SOIL pollution
- Publication
Clay Minerals, 2016, Vol 51, Issue 3, p489
- ISSN
0009-8558
- Publication type
Article
- DOI
10.1180/claymin.2016.051.3.08