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Related Concept Videos

Methods for Controlling Microbial Growth01:29

Methods for Controlling Microbial Growth

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Chemicals play important roles in controlling microbial growth by targeting microbial structures and functions as sanitizers, antiseptics, disinfectants, and sterilants.Alcohols are commonly used sanitizers, effectively disrupting lipid membranes, which compromises cell integrity. They are also used as antiseptics and disinfectants due to their rapid action and versatility.Phenols and their derivatives phenolics , known for denaturing proteins and disrupting cell membranes, are particularly...
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Pilot and Numeric Relaying01:21

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Development of Sulfidogenic Sludge from Marine Sediments and Trichloroethylene Reduction in an Upflow Anaerobic Sludge Blanket Reactor
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A two-compartment upflow pilot scale bioreactor system for microbial sulfate reduction control studies.

L R P de Andrade Lima1, L A Bernardez1

  • 1Department of Materials Science and Technology, Federal University of Bahia, Brazil.

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|March 27, 2019
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Summary

Sulfate-reducing bacteria (SRB) cause oil field souring. A novel two-compartment bioreactor system effectively mimics oil field conditions, offering better insights into SRB activity and control strategies.

Keywords:
BioreactorSouringSulfate reducing bacteria

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Area of Science:

  • Petroleum Engineering
  • Microbiology
  • Environmental Science

Background:

  • Oil field souring is primarily caused by sulfate-reducing bacteria (SRB).
  • Conventional bioreactors, like packed-bed reactors, inadequately represent the varied conditions near oil field injection wells (void and porous regions).
  • Effective SRB management is crucial for oil production integrity and environmental protection.

Purpose of the Study:

  • To design and operate a pilot-scale bioreactor system for investigating SRB activity, inhibition, and control in oil field environments.
  • To develop a system that accurately simulates the complex hydrodynamic conditions found in oil fields.
  • To provide a platform for testing novel SRB control strategies.

Main Methods:

  • A novel two-compartment bioreactor was designed, comprising an empty section and a packed-bed section.
  • The system allowed for parallel operation with independent or shared nutrient supply, enabling flexible experimental designs.
  • Hydrodynamic behavior was analyzed, comparing the two-compartment system's mixing characteristics against conventional packed-bed reactors.

Main Results:

  • The two-compartment bioreactor successfully simulated conditions relevant to oil field injection wells.
  • The novel system exhibited mixing behavior largely independent of flow rate, unlike conventional reactors.
  • This improved hydrodynamic control facilitates more accurate studies of SRB activity and mitigation.

Conclusions:

  • The developed two-compartment bioreactor is a significant advancement for studying SRB in simulated oil field conditions.
  • This system offers enhanced control over hydrodynamics, crucial for understanding SRB behavior and developing effective control measures.
  • The findings pave the way for improved strategies to combat oil field souring.