Iron Influence on Copper Biosorption Using Anaerobic Sludge and Its Microstructural Characterization

With the purpose of determining the copper biosorption mechanism, iron influence on the bioremoval, and methane production in a batch system using an anaerobic sludge a systematic study was carried out. In addition, sludge was characterized before and after biosorption treatment by X-ray diffraction...

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Bibliographic Details
Published in:Mineral processing and extractive metallurgy review 2011-01, Vol.32 (1), p.60-67
Main Authors: Certucha-Barragán, M. T., Acedo-Félix, E., Almendariz-Tapia, F. J., Leal-Cruz, A. L., Pérez-Moreno, R., Valenzuela-García, J. L., Monge-Amaya, O.
Format: Article
Language:English
Subjects:
Bacillariophyceae
characterization
Copper
Iron
Methane
microorganisms
microscopy
Microstructure
Mineral processing
Scanning electron microscopy
Sludge
Spectrum analysis
Studies
water treatment
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Summary:With the purpose of determining the copper biosorption mechanism, iron influence on the bioremoval, and methane production in a batch system using an anaerobic sludge a systematic study was carried out. In addition, sludge was characterized before and after biosorption treatment by X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDS). According to results, Fe(III) has effect on copper biosorption. At neutral pH and concentrations from 50 to 300 mg/L, copper biosorption increases. However, at concentrations >300 mg/L a reduction in biosorption is observed. During biosorption, Fe(III) does not have an effect on both methane production and methanogenic activity; consequently, it is possible establishing that methanogenic bacteria are active under these conditions. Results of analysis by EDS reveal the copper presence into diatoms (2.66w%). In addition, biosorption of copper is by means diatoms-bacteria-polimeric matrix, and it is also bioaccumulated into diatoms.
ISSN:0882-7508
1547-7401
DOI:10.1080/08827508.2010.530719