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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Paz-Ferreiro, J. Abreu, C. A. Melo, L. C. A. Beesley, L. Puga, A. P. |
| Description | Country affiliation: Brazil Author Affiliation: Puga AP ( Instituto Agronômico de Campinas, Campinas, SP, 13020-902, Brazil. linepuga@gmail.com.); Abreu CA ( Instituto Agronômico de Campinas, Campinas, SP, 13020-902, Brazil.); Melo LC ( Universidade Federal de Lavras, Campus Universitário, Lavras, MG, 37200-000, Brazil.); Paz-Ferreiro J ( School of Civil, Environmental and Chemical Engineering, RMIT University, GPO Box 2476, Melbourne, VIC, 3001, Australia.); Beesley L ( The James Hutton Institute, Craigiebuckler, Aberdeen, AB158QH, UK.) |
| Abstract | Accumulation of heavy metals in unconsolidated soils can prove toxic to proximal environments, if measures are not taken to stabilize soils. One way to minimize the toxicity of metals in soils is the use of materials capable of immobilizing these contaminants by sorption. Biochar (BC) can retain large amounts of heavy metals due to, among other characteristics, its large surface area. In the current experiment, sugarcane-straw-derived biochar, produced at 700 °C, was applied to a heavy-metal-contaminated mine soil at 1.5, 3.0, and 5.0% (w/w). Jack bean and Mucuna aterrima were grown in pots containing a mine contaminated soil and soil mixed with BC. Pore water was sampled to assess the effects of biochar on zinc solubility, while soils were analyzed by DTPA extraction to confirm available metal concentrations. The application of BC decreased the available concentrations of Cd, Pb, and Zn in the mine contaminated soil leading to a consistent reduction in the concentration of Zn in the pore water. Amendment with BC reduced plant uptake of Cd, Pb, and Zn with the jack bean uptaking higher amounts of Cd and Pb than M. aterrima. This study indicates that biochar application during mine soil remediation could reduce plant concentrations of heavy metals. Coupled with this, symptoms of heavy metal toxicity were absent only in plants growing in pots amended with biochar. The reduction in metal bioavailability and other modifications to the substrate induced by the application of biochar may be beneficial to the establishment of a green cover on top of mine soil to aid remediation and reduce risks. |
| ISSN | 09441344 |
| Issue Number | 22 |
| Volume Number | 22 |
| e-ISSN | 16147499 |
| Journal | Environmental Science and Pollution Research |
| Language | English |
| Publisher | Springer |
| Publisher Date | 2015-11-01 |
| Publisher Place | Germany |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Cadmium Chemistry Charcoal Fabaceae Metabolism Lead Soil Pollutants Zinc Biodegradation, Environmental Saccharum Soil Solubility Journal Article Research Support, Non-u.s. Gov't Discipline Environmental Science Discipline Environmental Chemistry |
| Content Type | Text |
| Resource Type | Article |
| Subject | Environmental Chemistry Health, Toxicology and Mutagenesis Pollution Medicine |
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