Effects of the presence of a composted biosolid on the metal immobilizing action of an urban soil
The influence of a composted biosolid from urban wastewater treatment on the retention and solubility of Cu, Pb or Zn added to a soil was studied by batch sorption/desorption experiments, equilibrating both materials and their mixtures with solutions containing various metal concentrations. The composted biosolid adsorbed less Cu or Pb and slightly more Zn than the soil, and thus caused a noticeable decrease in the retention of Cu or Pb and an increase in Zn adsorption by soil-biosolid mixtures, but these effects in the mixtures were not additive for any metal. The pH effects were studied by means of (log metal concentration)/pH diagrams. It was shown that Cu behaviour was different from that of the other metals: the relation between pH and Cu concentrations suggested similar solubilities in the presence of the biosolid and the mixtures, whereas the biosolid-free soil gave data located on a region of the diagram corresponding to slightly lower solubility. In the case of Pb or Zn, the data for the biosolid were located in a region of the diagram corresponding to clearly lower solubilities than those for the biosolid/soil mixtures. It was concluded that the biosolid has little effect on metal solubility when it is mixed with the soil in the proportions used here.
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Format: | artículo biblioteca |
Language: | English |
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Elsevier
2009-11-26
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Subjects: | Soil metal adsorption, Composted biosolid, Copper, Lead, Zinc, |
Online Access: | http://hdl.handle.net/10261/22393 |
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dig-irnas-es-10261-223932019-10-14T13:17:07Z Effects of the presence of a composted biosolid on the metal immobilizing action of an urban soil Madrid Díaz, Fernando Florido Fernández, M.C. Soil metal adsorption Composted biosolid Copper Lead Zinc The influence of a composted biosolid from urban wastewater treatment on the retention and solubility of Cu, Pb or Zn added to a soil was studied by batch sorption/desorption experiments, equilibrating both materials and their mixtures with solutions containing various metal concentrations. The composted biosolid adsorbed less Cu or Pb and slightly more Zn than the soil, and thus caused a noticeable decrease in the retention of Cu or Pb and an increase in Zn adsorption by soil-biosolid mixtures, but these effects in the mixtures were not additive for any metal. The pH effects were studied by means of (log metal concentration)/pH diagrams. It was shown that Cu behaviour was different from that of the other metals: the relation between pH and Cu concentrations suggested similar solubilities in the presence of the biosolid and the mixtures, whereas the biosolid-free soil gave data located on a region of the diagram corresponding to slightly lower solubility. In the case of Pb or Zn, the data for the biosolid were located in a region of the diagram corresponding to clearly lower solubilities than those for the biosolid/soil mixtures. It was concluded that the biosolid has little effect on metal solubility when it is mixed with the soil in the proportions used here. Peer reviewed 2010-03-15T12:26:40Z 2010-03-15T12:26:40Z 2009-11-26 artículo http://purl.org/coar/resource_type/c_6501 Journal of Hazardous Materials 176, 792–798 (2010) 0304-3894 (Online) http://hdl.handle.net/10261/22393 10.1016/j.jhazmat.2009.11.104 en http://www.sciencedirect.com/science/article/B6TGF-4XSTD91-4/2/93abe517a15cd730266722bbad511960 none 22195 bytes application/pdf Elsevier |
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Soil metal adsorption Composted biosolid Copper Lead Zinc Soil metal adsorption Composted biosolid Copper Lead Zinc |
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Soil metal adsorption Composted biosolid Copper Lead Zinc Soil metal adsorption Composted biosolid Copper Lead Zinc Madrid Díaz, Fernando Florido Fernández, M.C. Effects of the presence of a composted biosolid on the metal immobilizing action of an urban soil |
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The influence of a composted biosolid from urban wastewater treatment on the retention and solubility of Cu, Pb or Zn added to a soil was studied by batch sorption/desorption experiments, equilibrating both materials and their mixtures with solutions containing various metal concentrations. The composted biosolid adsorbed less Cu or Pb and slightly more Zn than the soil, and thus caused a noticeable decrease in the retention of Cu or Pb and an increase in Zn adsorption by soil-biosolid mixtures, but these effects in the mixtures were not additive for any metal. The pH effects were studied by means of (log metal
concentration)/pH diagrams. It was shown that Cu behaviour was different from that of the other metals: the relation between pH and Cu concentrations suggested similar solubilities in the presence of the biosolid and the mixtures, whereas the biosolid-free soil gave data located on a region of the diagram corresponding to slightly lower solubility. In the case of Pb or Zn, the data for the biosolid were located in a region of the diagram corresponding to clearly lower solubilities than those for the biosolid/soil mixtures. It was concluded that the biosolid has little effect on metal solubility when it is mixed with the soil in the proportions used here. |
format |
artículo |
topic_facet |
Soil metal adsorption Composted biosolid Copper Lead Zinc |
author |
Madrid Díaz, Fernando Florido Fernández, M.C. |
author_facet |
Madrid Díaz, Fernando Florido Fernández, M.C. |
author_sort |
Madrid Díaz, Fernando |
title |
Effects of the presence of a composted biosolid on the metal immobilizing action of an urban soil |
title_short |
Effects of the presence of a composted biosolid on the metal immobilizing action of an urban soil |
title_full |
Effects of the presence of a composted biosolid on the metal immobilizing action of an urban soil |
title_fullStr |
Effects of the presence of a composted biosolid on the metal immobilizing action of an urban soil |
title_full_unstemmed |
Effects of the presence of a composted biosolid on the metal immobilizing action of an urban soil |
title_sort |
effects of the presence of a composted biosolid on the metal immobilizing action of an urban soil |
publisher |
Elsevier |
publishDate |
2009-11-26 |
url |
http://hdl.handle.net/10261/22393 |
work_keys_str_mv |
AT madriddiazfernando effectsofthepresenceofacompostedbiosolidonthemetalimmobilizingactionofanurbansoil AT floridofernandezmc effectsofthepresenceofacompostedbiosolidonthemetalimmobilizingactionofanurbansoil |
_version_ |
1777664160948027392 |