期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 167, 期 1-3, 页码 136-140出版社
ELSEVIER
DOI: 10.1016/j.jhazmat.2008.12.092
关键词
Co-remediation; Zeolite; Humic acids; Lead; Garden soil
资金
- Major Project of National Natural Science Foundation of China [90502006]
- Shao M-A's Innovation Team Project of Education Ministry of China and Northwest AF University
- International Cooperative Partner Plan of Chinese Academy of Sciences, the Cooperative & Instructive Foundation of State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau [10501-HZ]
- Natural Science Foundation of Shanxi province, China [20051034]
The current study reported the co-remediation effect on the lead-polluted garden soil by zeolite and humic acids (HA), which was from comparing with the remediation of single zeolite in term of the lead fraction of sequential extraction in the soil and the distribution of lead in different parts of rape. Mixed treatment (zeolite and HA) and single treatment (zeolite) were, respectively, applied to the artificially polluted garden soil to examine the difference of their remediation effects in pot experiment. Results indicated that the co-remediation led to significantly greater (p < 0.01) reduction in the lead concentration in plants than by singly adding to zeolite. The co-application of zeolite and HA reduced the available fraction of lead compounds, but slightly increased (p < 0.01) the water-soluble fraction of lead compounds in the garden soil, compared with the application of single zeolite, especially in the severe lead-polluted soil (>= 1000 mg kg(-1)). This method might be an efficient way to remediate the lead-polluted soils on a large scale, although zeolite is a kind of hazardous material. (C) 2008 Elsevier B.V. All rights reserved.
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