Acid Drainage and Metal Bioleaching by Redox Potencial Changes in Heavy Polluted Fluvial Sediments

Natalia Porzionato; Mariangeles Mellota; Roberto Candal; Gustavo Curutchet

doi:10.4028/www.scientific.net/AMR.825.496

Paper Titles

Selective Metal Removal from Scandinavian Mine Waters Using Novel Biomineralization Technologies
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Reduction and Complexation of Copper in a Novel Bioreduction System Developed to Recover Base Metals from Mine Process Waters
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Sulfate Removal from Extremely Acidic Wastewaters Using Consortia of Acidophilic Sulfate-Reducing Bacteria
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Performance Evaluation of Two Anaerobic Reactors for Removing Sulphate from Industrial Effluents
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Acid Drainage and Metal Bioleaching by Redox Potencial Changes in Heavy Polluted Fluvial Sediments
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Impact of Heavy Metals on Denitrification of Simulated Mining Wastewaters
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Bioleaching for Extraction of Metals and Detoxification of Activated Sludges
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Influences of pH Buffers on the Growth of Acidithiobacillus thiooxidans and Biodesulfurization Efficiency
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Evaluation of Plant Species for Phytoremediation of a Mining Waste from Andacollo, Neuquén-Argentina
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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 825Acid Drainage and Metal Bioleaching by Redox...

Acid Drainage and Metal Bioleaching by Redox Potencial Changes in Heavy Polluted Fluvial Sediments

Abstract:

Sediments from polluted urban streams act as a sink of contaminants. The high content of organic matter and sulphides makes the system appropriate for binding heavy metals. However, changes in the redox potential leads to processes in which sediments acts like a low sulphidic ore in an oxidizing environment, and could generate acid drainages. Human and not human disturbances of the sediments could derive in its oxidation catalyzed by sulphur oxidizing bacteria (SOB). This process leads to acidification and metal release. In this study we analyze the acidification potential of anaerobic sediments of polluted streams near Buenos Aires with static and kinetic methods. The results remark the necessity to consider this process before any sediment management action.

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Periodical:

Advanced Materials Research (Volume 825)

Pages:

496-499

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.825.496

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Cite this paper

Online since:

October 2013

Authors:

Natalia Porzionato, Mariangeles Mellota, Roberto Candal, Gustavo Curutchet

Keywords:

Acid Drainage, Acidification Potential, Bioleaching, Heavy Metal, Reconquista River, Redox Potential Changes, Sediment Oxidation, Sulphur-Oxidizing Bacteria, Urban Streams

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