City Gloss

New coating product! Developed functioning patent pending at the international level; The term corrosion”, one thinks first of aerobic corrosion of metal under the influence of oxygen and water will be destroyed. However, a significant proportion of the corrosion damage takes place under complete exclusion of oxygen at the bottom of the storage tanks or pipelines. Sulfate-reducing bacteria (SRB) is primarily responsible for the anaerobic corrosion. These micro-organisms accelerate corrosion of tanks and other equipment, which are both water and organic materials in contact with. Such areas are not continuously cleaned, gel-like biofilms due to the strong and quickly adding settlement of the SRB.

Resulting Biofouling may be the precursor to the bio-corrosion with heavy mucus and unpleasant odours. Proven, the anaerobic Biocorrosion compared to the atmospheric corrosion causes a 10-fold higher rate of oxidation. The SRB settle primarily as tubercle-like colonies in poor circulation to niches. To find optimal conditions, in cracks, gaps and pores of the tank coating in the lower part of the tank filled. To maintain its oxygen independent metabolism, the SRB produce toxic hydrogen sulfide (H2S). The bio-corrosion is triggered by the enzyme hydrogenase, which secrete the SRB.

This enzyme breaks down the protective film of hydrogen on the iron surface of the tank. At the same time, a series of RedOx processes takes place, where Eisen(ii)sulfid occurs which makes a black crust to the corrosion tubercles. Even high-quality steel is decomposed through other physico chemical reactions. Rapidly progressive and fatal pitting is the result. Even concrete surfaces are heavily attacked by the SRB produced hydrogen sulfide. Extreme concrete drainage occurs. The new SRB inner coating of ceramic polymer GmbH prevents anaerobic bio-corrosion in the early stages. A first settlement and momentous tubercle formation of sulphate reducing bacteria in the will be proven counteracted resulting microcracks. The depot effect of biocide crystals creates a durable micro crack protection. Characteristics of ceramic polymer coating against SRB-induced bio-corrosion: special biocides in nano crystalline form will be incorporated into a proprietary process with ceramic fillers in a polymer matrix. Cracks in the Nano – and Micron form special action because of aging, temperature-related stress and mechanical stress in any protective coating over the duration of the operation. Here the SRB settle prefers, the cracks are protective, low-circulation niches for them. Formation of micro-cracks the biocidal crystals exposed by the break-up of the local surface and its effect along the areas in the entire crack. The SRB are killed before the settlement, the substrate is not attacked by the action of micro-organisms. The depot effect of special biocide crystals provides long-lasting biocidal protection without appreciable leaching. At Application in the biogas fermenter is not influencing the necessary bacterial processes, because the biocidal effect is limited locally on the resulting microcracks in the coating. Safe application during the coating process itself and also after curing the biocidal active substance remains encapsulated, initially fixed in the polymer matrix so that the coated surface is not antibacterial active and thus physiologically completely harmless. The used biocide is already largely harmless to humans. The application is simple and straightforward by airless spray or squeegee and role. Reliable long-term protection could be determined in extensive testing by an independent research partner when using the novel range the extensive prevention of SRB-induced bio-corrosion. Thus in the long run is better targeted and more effective protection for concrete and steel substrates from bio-gas plants, as well as tanks for crude oil and hydrocarbons.