Availability of heavy metals for uptake by Salix viminalis on a moderately contaminated dredged sediment disposal site

Meers, Erik; Lamsal, Sanjay; Vervaeke, Pieter; Hopgood, M; Lust, Noël; Tack, Filip

doi:10.1016/j.envpol.2004.12.019

Cited by 105 publications

(40 citation statements)

References 19 publications

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“…planted on this soil was largely reduced. According to the results obtained, the contents of Zn in the individual parts of willow species were observed in the following order, leaves > bark > twigs > wood, and were confirmed by others [12,31]. The ability of willows and poplars to take up higher levels of Cd and Zn was comparable to other plant species, described by others [29,32,33].…”

Section: Cadmium and Zincsupporting

confidence: 62%

“…From this point of view, the results of rigorous field experiments showed lower phytoremediation efficiency, but better tolerance of plants to increased element levels in the soil are more promising for further research. The use of willow for phytoremediation would require annual harvesting to avoid the recycling of leaf-bound Cd in autumn [10] as recently confirmed by Meers et al [31]. They also stated that the annual harvest of wood with leaves show higher total removal of metals without any risk of contaminant penetration into surrounding environment.…”

Section: Metal Accumulation Capacity Of Willow Plantsmentioning

confidence: 67%

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Variation in the uptake of Arsenic, Cadmium, Lead, and Zinc by different species of willows Salix spp. grown in contaminated soils

et al. 2007

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Abstract:The experiment assessed the variability of in seven clones of willow plants of high biomass production (Salix smithiana S-218, Salix smithiana S-150, Salix viminalis S-519, Salix alba S-464, Salix 'Pyramidalis' S-141, Salix dasyclados S-406, Salix rubens S-391). They were planted in a pots for three vegetation periods in three soils differing in the total content of risk elements. Comparing the calculated relative decrease of total metal contents in soils, the phytoextraction potential of willows was obtained for cadmium (Cd) and zinc (Zn), moderately contaminated Cambisol and uncontaminated Chernozem, where aboveground biomass removed about 30% Cd and 5% Zn of the total element content, respectively. The clones showed variability in removing Cd and Zn, depending on soil type and contamination level: S. smithiana (S-150) and S. rubens (S-391) demonstrated the highest phytoextraction effect for Cd and Zn. For lead (Pb) and arsenic (As), the ability to accumulate the aboveground biomass of willows was found to be negligible in both soils. The results confirmed that willow plants show promising results for several elements, mainly for mobile ones like cadmium and zinc in moderate levels of contamination. The differences in accumulation among the clones seemed to be affected more by the properties of clones, not by the soil element concentrations or soil properties. However, confirmation and verification of the results in field conditions as well as more detailed investigation of the mechanisms of cadmium uptake in rhizosphere of willow plants will be determined by further research.

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Section: Cadmium and Zincsupporting

confidence: 62%

Section: Metal Accumulation Capacity Of Willow Plantsmentioning

confidence: 67%

Variation in the uptake of Arsenic, Cadmium, Lead, and Zinc by different species of willows Salix spp. grown in contaminated soils

et al. 2007

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“…Tree species that take up Cd or Zn from the rooting zone obviously translocate those trace metals to their leaves, as reported before (Alriksson and Eriksson, 2001;Hammer et al, 2003;Meers et al, 2005;Mertens et al, 2007;Unterbrunner et al, 2007;Vervaeke et al, 2003).…”

Section: Tree Species Effects On Aboveground Metal Accumulationsupporting

confidence: 57%

Elevated Cd and Zn uptake by aspen limits the phytostabilization potential compared to five other tree species

Nevel

Mertens

Staelens

et al. 2011

Ecological Engineering

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Phytostabilization of metals using trees is often promoted although the influence of different tree species on the mobilization of metals is not yet clear. This study examined effects of six tree species on the soil characteristics pH, organic carbon (OC) content and cation exchange capacity (CEC) and on the redistribution of cadmium (Cd) and zinc (Zn) on a polluted sandy soil. Soil and biomass were sampled in 10-years-old stands growing on former agricultural land. The tree species included were silver birch (Betula pendula), oak (Quercus robur and Q. petraea), black locust (Robinia pseudoacacia), aspen (Populus tremula), Scots pine (Pinus sylvestris) and Douglas fir (Pseudotsuga menziesii). In the short period of ten years, only aspen caused significant changes in the soil characteristics. Due to accumulation of Cd and Zn in its leaf litter, aspen increased the total as well as the NH 4 OAc-EDTA-extractable Cd and Zn concentrations in the topsoil compared to deeper soil layers and to other tree species. Also topsoil pH, OC content and CEC were significantly higher than under most of the other species. This caused rather low 'bio-available' CaCl 2 -extractable concentrations under aspen. Nevertheless, given the risks of aboveground metal dispersion and topsoil accumulation, it is recommended that aspen should be avoided when afforesting Cd and Zn contaminated lands.

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“…This time constraint may become less important if phytoextraction can be combined with a revenue earning operation (Robinson et al, 2003;Ghosh and Singh, 2005;Meers et al, 2005;. Decontamination of soil is a long term goal that can be achieved by striving for short term goals like producing renewable/green energy to keep the income of the farmers at a level comparable to the situation before the start of remediation (Vassilev et al, 2004).…”

Section: Combining Phytoextraction With Bioenergy Productionmentioning

confidence: 99%

Economic Viability of Phytoremediation of a Cadmium Contaminated Agricultural Area Using Energy Maize. Part II: Economics of Anaerobic Digestion of Metal Contaminated Maize in Belgium

Thewys

Witters

Meers

et al. 2010

International Journal of Phytoremediation

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This paper deals with remediation of the Campine soil, an agricultural area diffusely contaminated with heavy metals where most farmers rear dairy cattle and grow fodder maize. In part I of this study (Witters et al., xxx), the effect of switching from fodder to energy maize on the income of the farmer was calculated. Selling this energy maize as feedstock for anaerobic digestion to produce renewable energy could lead to a significant increase in the farmer's income. Part II explores the economic opportunities for the farmer of digesting the harvested contaminated biomass himself, by performing a Net Present Value (NPV) analysis concerning the digestion activity and by calculating the probability of a positive NPV of income resulting from the digestion installation. We investigate the trade off between the maximum price for energy maize that can be paid by the digestion activity and the minimum price that the farming activity needs to compensate for covering its production costs.Integrating the previous article in the actual analysis results in an increase of the total extra income for the farmer (i.e. from both growing energy maize and performing digestion).

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Availability of heavy metals for uptake by Salix viminalis on a moderately contaminated dredged sediment disposal site

Cited by 105 publications

References 19 publications

Variation in the uptake of Arsenic, Cadmium, Lead, and Zinc by different species of willows Salix spp. grown in contaminated soils

Variation in the uptake of Arsenic, Cadmium, Lead, and Zinc by different species of willows Salix spp. grown in contaminated soils

Elevated Cd and Zn uptake by aspen limits the phytostabilization potential compared to five other tree species

Economic Viability of Phytoremediation of a Cadmium Contaminated Agricultural Area Using Energy Maize. Part II: Economics of Anaerobic Digestion of Metal Contaminated Maize in Belgium

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