Simulating microbiologically influenced corrosion by depositing extracellular biopolymers on mild steel surfaces

Roe, F L; Lewandowski, Z; Funk, T

doi:10.5006/1.3292067

Title: Simulating microbiologically influenced corrosion by depositing extracellular biopolymers on mild steel surfaces

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Abstract

Electrochemical properties of corroding mild steel (MS) surfaces were measured in real time using three closely spaced microelectrodes. Dissolved oxygen, pH, and ion currents were mapped simultaneously and noninvasively above a MS coupon partially coated with biopolymer gels. Calcium alginate (Ca-Alg [an extracellular biopolymer containing carboxylate functional groups]) and agarose (one without carboxylate functional groups) were tested. Corrosion occurred at approximately the same rate under the two biopolymer spots on the same coupon. Corrosion rates under these biopolymers were {approx} 4 mpy in a weak saline solution. Results suggested corrosion was not influenced by chemical properties of the biopolymer but possibly was controlled by oxygen reduction in noncoated regions of the coupon (i.e., a differential aeration cell).

Authors:

Roe, F L; Lewandowski, Z; Funk, T ^[1]

Montana State Univ., Bozeman, MT (United States). Center for Biofilm Engineering

Publication Date:: Tue Oct 01 00:00:00 EDT 1996

OSTI Identifier:: 392616

Resource Type:: Journal Article

Journal Name:: Corrosion

Additional Journal Information:: Journal Volume: 52; Journal Issue: 10; Other Information: PBD: Oct 1996

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; STEELS; BIOLOGICAL FOULING; CORROSION; CORROSION PRODUCTS; MONITORING; SIMULATION; ORGANIC POLYMERS

Citation Formats


                    Roe, F L, Lewandowski, Z, and Funk, T. Simulating microbiologically influenced corrosion by depositing extracellular biopolymers on mild steel surfaces.  United States: N. p., 1996. 
        Web.  doi:10.5006/1.3292067.

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                    Roe, F L, Lewandowski, Z, & Funk, T. Simulating microbiologically influenced corrosion by depositing extracellular biopolymers on mild steel surfaces.  United States.  https://doi.org/10.5006/1.3292067

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                    Roe, F L, Lewandowski, Z, and Funk, T. 1996.  
        "Simulating microbiologically influenced corrosion by depositing extracellular biopolymers on mild steel surfaces".  United States.  https://doi.org/10.5006/1.3292067.

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@article{osti_392616,

  title        = {Simulating microbiologically influenced corrosion by depositing extracellular biopolymers on mild steel surfaces},

  author       = {Roe, F L and Lewandowski, Z and Funk, T},

  abstractNote = {Electrochemical properties of corroding mild steel (MS) surfaces were measured in real time using three closely spaced microelectrodes. Dissolved oxygen, pH, and ion currents were mapped simultaneously and noninvasively above a MS coupon partially coated with biopolymer gels. Calcium alginate (Ca-Alg [an extracellular biopolymer containing carboxylate functional groups]) and agarose (one without carboxylate functional groups) were tested. Corrosion occurred at approximately the same rate under the two biopolymer spots on the same coupon. Corrosion rates under these biopolymers were {approx} 4 mpy in a weak saline solution. Results suggested corrosion was not influenced by chemical properties of the biopolymer but possibly was controlled by oxygen reduction in noncoated regions of the coupon (i.e., a differential aeration cell).},

  doi          = {10.5006/1.3292067},

  url          = {https://www.osti.gov/biblio/392616},
  journal      = {Corrosion},
number       = 10,

  volume       = 52,

  place        = {United States},

  year         = {Tue Oct 01 00:00:00 EDT 1996},

  month        = {Tue Oct 01 00:00:00 EDT 1996}

}

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