Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 371453
Title Feasibility of phytoextraction to remediate cadmium and zinc contaminated soils
Author(s) Koopmans, G.F.; Romkens, P.F.A.M.; Fokkema, M.J.; Song, J.; Luo, Y.; Japenga, J.; Zhao, F.J.
Source In: The 3rd International Conference on Soil Pollution and Remediation, 18 - 21 October, 2008, Nanjing, China. - Nanjing : - p. 138 - 140.
Event Nanjing : The 3rd International Conference on Soil Pollution and Remediation, 2008-10-18/2008-10-21
Department(s) Soil Science Centre
Publication type Contribution in proceedings
Publication year 2008
Abstract A Cd and Zn contaminated soil was mixed and equilibrated with an uncontaminated, but otherwise similar soil to establish a gradient in soil contamination levels. Growth of Thlaspi caerulescens (Ganges ecotype) significantly decreased the metal concentrations in soil solution. Plant uptake of Cd and Zn exceeded the decrease of the soluble metal concentrations by several orders of magnitude. Hence, desorption of metals must have occurred to maintain the soil solution concentrations. A coupled regression model was developed to describe the transfer of metals from soil to solution and plant shoots. This model was applied to estimate the phytoextraction duration required to decrease the soil Cd concentration from 10 to 0.5mgkg(-1). A biomass production of 1 and 5tdmha(-1)yr(-1) yields a duration of 42 and 11yr, respectively. Successful phytoextraction operations based on T. caerulescens require an increased biomass production.
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