microbial corrosion Articles

  • Metabolic profiling of biofilm bacteria known to cause microbial influenced corrosion

    This study builds upon previous research that demonstrated the simplicity of obtaining metabolite profiles of bacteria in urban water networks, by using the metabolic profile of bacteria extracted from a reticulation pipe biofilm, which is known to cause microbial influenced corrosion (MIC). The extracellular metabolites of the isolated bacteria, and those bacteria in consortium, were analysed ...


    By IWA Publishing

  • Microbial control reduces sulfide

    The article is about sewage odour control using a totally NEW technology known as Microbial Control. Microbial control treats the cause of sewage odour, corrosion and methane gas production in sewers by removing the biofilm / sediment (slimes) complexes where sewage odour and methane gas are produced. Without sewage odour you cannot have sewage infrastructure corrosion from sulfuric acid. As ...


    By Biosol

  • Enhanced phosphorus removal by microbial-collaborating sponge iron

    The collaborative and mutually reinforcing phosphorus removal in domestic wastewater in a sponge iron and microorganisms system was studied through a laboratory and a pilot scale experiment. The results showed that the total phosphorus concentration of the effluent of less than 0.5 mg/L could be achieved. The results also support that the biochemical reaction accelerated the iron ...


    By IWA Publishing

  • Microbial Control and Sanitization of Membrane-Based Pure Water Treatment Systems

    Introduction Today's high technology water purification systems are designed to remove many types of impurities. One of the most difficult to deal with is microbiological contamination. Microbial growth in a water system presents two problems: it not only reduces water quality, but if left unattended, the problem can 'grow' to reduce system performance and life. Biofouling can cause a decrease ...


  • Revealing biogenic sulfuric acid corrosion in sludge digesters: detection of sulfur-oxidizing bacteria within full-scale digesters

    Biogenic sulfuric acid corrosion (BSA) is a costly problem affecting both sewerage infrastructure and sludge handling facilities such as digesters. The aim of this study was to verify BSA in full-scale digesters by identifying the microorganisms involved in the concrete corrosion process, that is, sulfate-reducing (SRB) and sulfur-oxidizing bacteria (SOB). To investigate the SRB and SOB ...


    By IWA Publishing

  • Bacterial biofilms formed in arsenic-containing water: biodeterioration of water network materials

    The immersion of any material in a water system triggers a surface microbial colonization which simultaneously influences the corrosion behavior of the substratum. The present study was focused on the As(V) influence on the biofilm formation and their consequences on the corrosion behavior of different substrata. Commercial materials used in water distribution networks: alloys based on Fe, Zn ...


    By IWA Publishing

  • An alternative cooling tower disinfectant: On-site generated mixed oxidants

    Favorable temperatures (80-110°F) and availability of nutrients make cooling tower systems ideal places for microbial growth. Accumulation of biofilm impedes proper heat transfer and secretes metabolic products that contribute to microbiologically influenced corrosion (MIC). The films also may propagate and release disease-causing bacteria. Control of microbial growth is traditionally ...


    By MIOX Corporation

  • Case study - Industrial wastewater reuse: CEMEX UK

    CEMEX is one of the world's leading cement producers and suppliers of building materials. In order to limit their manufacturing footprint in terms of process water usage, CEMEX UK sourced their water from the final settlement lagoons of their local wastewater treatment plant (Anglian Water). atg UV Technology was approached by CEMEX UK to supply a containerized UV wastewater treatment plant to ...


    By atg UV Technology

  • Evaluation of biofilm performance as a protective barrier against biocorrosion using an enzyme electrode

    Sulfide is known to be an important factor in microbiologically influenced corrosion (MIC) of metals and concrete deterioration in wastewater treatment structures and sewer pipelines. A sulfide biosensor was used to determine the effectiveness of Escherichia coli DH5α biofilm as a protective barrier against MIC. The biofilm was shown to be effective in protecting surfaces from sulfide and helping ...


    By IWA Publishing

  • Bypass filtration in open circulating cooling water systems

    An open circulating cooling system is a method to remove process heat and is applied frequently for industrial purposes. In these systems heat is removed by evaporation of water to the surpassing air in the cooling tower. However there are some environmental disadvantages such as addition of chemicals to prevent the cooling water system from microbial growth and corrosion. The application of ...


    By Paques B.V.

  • Chiller & cooling tower water treatment - case study

    Overview There are three main challenges for treating cooling water in both open and closed loops: scale, corrosion and biogrowth. Water System Challenges The traditional chemical treatment calls for chemicals to deal with these challenges. When scale is present, the condenser’s ability to transfer heat is reduced, causing higher pressure and higher ...

  • Case study - Algae control in cooling towers

    Company: Dubai festival city Description: LG Sonic industrial units for district cooling facility in Dubai Project objective: Reduce chemical dosage for water treatment and, at the same time, control factors that may cause problems, such as corrosion, scaling, and microbial activity Before treatment Scaling, ...


    By LG Sonic

  • Case study - Biofouling in cooling basin

    Al Futtaim Cooling district plant incorporated the LG Sonic technology into their chemical treatment program to reduce the biocide consumption in the cooling towers and improve the water quality. The Challenge: Prevent Biofouling and Reduce Chemical Dosage Reduce chemical dosage for water treatment and at the same time controlling factors that may cause problems such as ...


    By LG Sonic

  • A low-cost, safe, effective Halogen disinfectant for cooling towers

    On-site, on-demand generation of MIOX mixed oxidant disinfecting solution provides several advantages for the cooling tower industry. These include excellent control of microbial populations even at the elevated pH typical of cooling tower waters, no negative impact on traditional scale and corrosion inhibitors, and environmentally friendly operating conditions. As an inherently safe technology, ...


    By MIOX Corporation

  • The Standard For Total Biomass Measurement in Metalworking Fluids

    Metalworking fluids provide a warm and nutrient-rich environment for growth of bacteria and fungus.  Once microbial growth is established it can contribute to the breakdown of the metal working fluid emulsion and consequently its ability to lubricate metallic surfaces.  Microbes also lower the fluid's pH, leading to corrosion of tool parts and staining of wetted metal surfaces.  ...


    By LuminUltra Technologies Ltd.

  • Microbes in oil E&P

    The role of microbes in the oil industry, both detrimental and beneficial, has now become more and more accepted. Reservoir souring and microbial influenced corrosion cost the oil and gas business millions of dollars every year, and require adequate mitigation and surveillance strategies. Monitoring using modern molecular microbiological methods has facilitated a better understanding of ...


    By Energy Institute (EI)

  • Economical calculations for the use of Ozone in Cooling Towers

    Abstract Ozone has been successfully applied to industrial cooling water systems with the resultant improvement in operational efficiency due to increased heat transfer, reduced system corrosion, improved environmental impact and reduced on-going chemical expenditure. The aim of this paper is to provide practical advice on the options available for the application of ozone and the potential ...


    By Absolute Systems Inc.

  • Investigation of introducing water from an artificial recharge plant to an existing groundwater distribution system

    ABSTRACTThe consequences of mixing water from the Arrenaes Artificial Recharge (AR) trial plant with groundwater from existing well fields have been investigated. The potential problems of interest are bacterial regrowth, precipitation of iron, and corrosion in the raw water distribution system. The AR trial plant is located on the Arrenaes peninsula on Zealand, Denmark. A large-scale production ...


    By IWA Publishing

  • Characteristics of pipe-scale in the pipes of an urban drinking water distribution system in eastern China

    Pipes that carry drinking water have gradually aged. Events occurring with increasing frequency, such as substandard water quality in residential taps, red water, and black water, reveal the deterioration of the chemical stability of a drinking water distribution system (DWDS). Pipes in the DWDS serving City S, located in eastern China, were sampled to analyze the concentration and ...


    By IWA Publishing

  • Simulta neous determinat ion of nitrite and nitrate in processed foods

    Nitrite either alone or in combination with nitrate is added to food to preserve the color and taste and to prevent foods from becoming rancid. They are also used in food for their anti-microbial properties. Higher levels in vegetables and leafy greens are possible from the use of nitrate fertilizers and/or livestock manure. Nitrate can be reduced to nitrite at certain physiological conditions in ...


    By Pickering Laboratories, Inc.

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