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51313-02101-Sulfate Reducing Bacteria Influenced Calcium Carbonate Precipitation

Picture for Sulfate Reducing Bacteria Influenced Calcium Carbonate Precipitation
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Product Number: 51313-02101-SG
ISBN: 02101 2013 CP
Author: Hussain Almahamedh
Publication Date: 2013
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Sulfate-reducing Bacteria (SRB) are a large group of anaerobic microorganisms that can facilitate many biochemical processes. Calcium carbonate (CaCO3) precipitation is a common phenomenon found in environment such as marine water fresh water and soils. In this paper beside their effect on the corrosion of carbon steel pipeline the possible role of SRB (
Desulfovibrio desulfuricans) in precipitation of CaCO3 was investigated as well. The corrosion of carbon steel exposed to mixed solution in the presence and absence of Desulfovibrio desulfuricans was characterized by Electrochemical Impedance Spectroscopy (EIS) linear polarization resistance (Rp) and open circuit potential (OCP) measurements. The biogenic scale formed by Desulfovibrio desulfuricans were chemically analyzed by X-ray Photoelectron Spectroscopy (XPS) X-ray Diffraction (XRD) and Energy Dispersive Spectroscopy (EDS). Experimental results revealed a substantial decrease in the Rp values for the coupon exposed to the solution in the presence of Desulfovibrio desulfuricans. The chemical analyses of the formed scale indicate a possible influence of Desulfovibrio desulfuricans on the formation of CaCO3.
 

Sulfate-reducing Bacteria (SRB) are a large group of anaerobic microorganisms that can facilitate many biochemical processes. Calcium carbonate (CaCO3) precipitation is a common phenomenon found in environment such as marine water fresh water and soils. In this paper beside their effect on the corrosion of carbon steel pipeline the possible role of SRB (
Desulfovibrio desulfuricans) in precipitation of CaCO3 was investigated as well. The corrosion of carbon steel exposed to mixed solution in the presence and absence of Desulfovibrio desulfuricans was characterized by Electrochemical Impedance Spectroscopy (EIS) linear polarization resistance (Rp) and open circuit potential (OCP) measurements. The biogenic scale formed by Desulfovibrio desulfuricans were chemically analyzed by X-ray Photoelectron Spectroscopy (XPS) X-ray Diffraction (XRD) and Energy Dispersive Spectroscopy (EDS). Experimental results revealed a substantial decrease in the Rp values for the coupon exposed to the solution in the presence of Desulfovibrio desulfuricans. The chemical analyses of the formed scale indicate a possible influence of Desulfovibrio desulfuricans on the formation of CaCO3.
 

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