The interactive effects of chelator, fertilizer, and rhizobacteria for enhancing phytoremediation of heavy metal contaminated soil

被引：23

作者：

Chen H. ^{[1
]}

Cutright T.J. ^{[1
]}

机构：

[1] Department of Civil Engineering, University of Akron, Akron

来源：

Journal of Soils and Sediments | 2002年 / 2卷 / 4期

关键词：

Chelator; Fertilizer; Heavy metals; Phytoremediation enhancement; Rhizobacteria;

D O I：

10.1007/BF02991040

中图分类号：

学科分类号：

摘要：

The role of chelator, fertilizer, and enriched rhizobacteria in facilitating Cd, Cr, and Ni accumulation by Helianthus annuus was studied. It was found that by adding a synthetic chelator, EDTA, the shoot concentrations of Cd and Ni were significantly increased from 34.2 mg kg-1 and 14.5 mg kg-1 to 115 mg kg-1 and 117 mg kg-1, respectively. However, the total biomass of plants was drastically decreased by 50 to 60%. Compared with this treatment, inoculating enriched rhizobacteria to plants grown under similar conditions maintained the surged shoot concentrations of Cd and Ni while increasing the plants biomass by more than 1.6-fold. It was also found that introducing a commercial fertilizer, Hydro-Gro®, to plants significantly increased the Ni accumalation by 3-fold and the plant biomass by 1.43-fold. These results suggest that combing fertilizers, chelators and/or rhizobacteria might provide a more effective approach for enhancing phytoremediation.

引用

页码：203 / 210

页数：7

共 31 条

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