Effects of phytoextraction on heavy metal concentrations and pH of pore-water of biosolids determined using an in situ sampling technique.
Identifieur interne : 003849 ( Main/Corpus ); précédent : 003848; suivant : 003850Effects of phytoextraction on heavy metal concentrations and pH of pore-water of biosolids determined using an in situ sampling technique.
Auteurs : T T Huynh ; W S Laidlaw ; B. Singh ; D. Gregory ; A J M. BakerSource :
- Environmental pollution (Barking, Essex : 1987) [ 1873-6424 ] ; 2008.
English descriptors
- KwdEn :
- Adsorption (MeSH), Biodegradation, Environmental (MeSH), Cadmium (analysis), Copper (analysis), Ecology (instrumentation), Ecology (methods), Hydrogen-Ion Concentration (MeSH), Metals, Heavy (analysis), Nickel (analysis), Populus (metabolism), Salix (metabolism), Sewage (MeSH), Soil Pollutants (analysis), Water (analysis), Water Pollutants, Chemical (analysis), Zinc (analysis).
- MESH :
- chemical , analysis : Cadmium, Copper, Metals, Heavy, Nickel, Soil Pollutants, Water, Water Pollutants, Chemical, Zinc.
- instrumentation : Ecology.
- metabolism : Populus, Salix.
- methods : Ecology.
- Adsorption, Biodegradation, Environmental, Hydrogen-Ion Concentration, Sewage.
Abstract
Heavy metal concentrations and pH of pore-water in contaminated substrates are important factors in controlling metal uptake by plants. We investigated the effects of phytoextraction on these properties in the solution phase of biosolids and diluted biosolids in a 12-month phytoextraction column experiment. Phytoextraction using Salix and Populus spp. temporarily decreased pore-water pH of the substrates over the experimental period followed by a return to initial pH conditions. Salixxreichardtii and Populus balsamifera effectively extracted Ni, Zn and Cd and actively mobilized these metals from the solid to the solution phase. S.xreichardtii had the stronger effect on mobilization of metals due to its larger root system. Phytoextraction did not affect Cu in the solution phase of the biosolids. Heavy metals were leached down to lower depths of the columns during the phytoextraction process.
DOI: 10.1016/j.envpol.2008.05.021
PubMed: 18586368
Links to Exploration step
pubmed:18586368Le document en format XML
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<author><name sortKey="Huynh, T T" sort="Huynh, T T" uniqKey="Huynh T" first="T T" last="Huynh">T T Huynh</name>
<affiliation><nlm:affiliation>Applied Ecology Research Group, School of Botany, The University of Melbourne, Parkville, VIC 3010, Australia. t.huynh11@pgrad.unimelb.edu.au</nlm:affiliation>
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<author><name sortKey="Laidlaw, W S" sort="Laidlaw, W S" uniqKey="Laidlaw W" first="W S" last="Laidlaw">W S Laidlaw</name>
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<author><name sortKey="Singh, B" sort="Singh, B" uniqKey="Singh B" first="B" last="Singh">B. Singh</name>
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<author><name sortKey="Gregory, D" sort="Gregory, D" uniqKey="Gregory D" first="D" last="Gregory">D. Gregory</name>
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<author><name sortKey="Baker, A J M" sort="Baker, A J M" uniqKey="Baker A" first="A J M" last="Baker">A J M. Baker</name>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Adsorption (MeSH)</term>
<term>Biodegradation, Environmental (MeSH)</term>
<term>Cadmium (analysis)</term>
<term>Copper (analysis)</term>
<term>Ecology (instrumentation)</term>
<term>Ecology (methods)</term>
<term>Hydrogen-Ion Concentration (MeSH)</term>
<term>Metals, Heavy (analysis)</term>
<term>Nickel (analysis)</term>
<term>Populus (metabolism)</term>
<term>Salix (metabolism)</term>
<term>Sewage (MeSH)</term>
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<term>Water (analysis)</term>
<term>Water Pollutants, Chemical (analysis)</term>
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<keywords scheme="MESH" type="chemical" qualifier="analysis" xml:lang="en"><term>Cadmium</term>
<term>Copper</term>
<term>Metals, Heavy</term>
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<term>Soil Pollutants</term>
<term>Water</term>
<term>Water Pollutants, Chemical</term>
<term>Zinc</term>
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<keywords scheme="MESH" qualifier="instrumentation" xml:lang="en"><term>Ecology</term>
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<keywords scheme="MESH" qualifier="metabolism" xml:lang="en"><term>Populus</term>
<term>Salix</term>
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<keywords scheme="MESH" xml:lang="en"><term>Adsorption</term>
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<front><div type="abstract" xml:lang="en">Heavy metal concentrations and pH of pore-water in contaminated substrates are important factors in controlling metal uptake by plants. We investigated the effects of phytoextraction on these properties in the solution phase of biosolids and diluted biosolids in a 12-month phytoextraction column experiment. Phytoextraction using Salix and Populus spp. temporarily decreased pore-water pH of the substrates over the experimental period followed by a return to initial pH conditions. Salixxreichardtii and Populus balsamifera effectively extracted Ni, Zn and Cd and actively mobilized these metals from the solid to the solution phase. S.xreichardtii had the stronger effect on mobilization of metals due to its larger root system. Phytoextraction did not affect Cu in the solution phase of the biosolids. Heavy metals were leached down to lower depths of the columns during the phytoextraction process.</div>
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<Abstract><AbstractText>Heavy metal concentrations and pH of pore-water in contaminated substrates are important factors in controlling metal uptake by plants. We investigated the effects of phytoextraction on these properties in the solution phase of biosolids and diluted biosolids in a 12-month phytoextraction column experiment. Phytoextraction using Salix and Populus spp. temporarily decreased pore-water pH of the substrates over the experimental period followed by a return to initial pH conditions. Salixxreichardtii and Populus balsamifera effectively extracted Ni, Zn and Cd and actively mobilized these metals from the solid to the solution phase. S.xreichardtii had the stronger effect on mobilization of metals due to its larger root system. Phytoextraction did not affect Cu in the solution phase of the biosolids. Heavy metals were leached down to lower depths of the columns during the phytoextraction process.</AbstractText>
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