Metal Leaching and Reductive Dissolution of Iron from Contaminated Soil and Sediment Samples by Indigenous Bacteria andBacillusIsolates
| Autor: | Matteo Faè, Alma Balestrazzi, Cinzia Calvio, Iveta Štyriaková, Igor Štyriak, Darina Štyriaková |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Goethite
Chemistry Health Toxicology and Mutagenesis Metallurgy Soil Science 010501 environmental sciences Hematite 010502 geochemistry & geophysics complex mixtures 01 natural sciences Pollution Soil contamination Ferrihydrite Bioremediation Bioleaching visual_art Environmental chemistry Leaching (pedology) visual_art.visual_art_medium Environmental Chemistry Dissolution 0105 earth and related environmental sciences |
| Zdroj: | Soil and Sediment Contamination: An International Journal. 25:519-535 |
| ISSN: | 1549-7887 1532-0383 |
| DOI: | 10.1080/15320383.2016.1170102 |
| Popis: | The purpose of this study was to leach Cu, Zn, As, and Fe from contaminated soil and sediment samples with indigenous heterotrophic bacteria isolated from the study sites. The sediment contained Fe in the form of goethite and low concentrations of other metals. The soil contained hematite and high concentrations of other metals. The environmental conditions affected the bacterial activity in the metals dissolution. As and Fe were the major metals leached from the sediment sample while a minor fraction of Cu was solubilized. Cu and Zn were the major metals leached from the soil sample while only a minor fraction of Fe was dissolved. As a control, a disinfectant was used for partial inactivation of indigenous bacteria. This treatment had a negative effect on the leaching of Fe, Zn and As from soil and sediment samples, but it increased Cu dissolution from the sediment. Bacterial different dissolution of Fe during soil and sediment bioleaching was also investigated with ferrihydrite. The iron concent... |
| Databáze: | OpenAIRE |
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