Soil aggressiveness influence on the deterioration of protective insulating coatings

Kopteva, Zh.P.; Zanina, V.V.; Козлова, И. А.; Andreyuk, K. I.

doi:10.1002/1521-4176(200202)53:2<98::aid-maco98>3.0.co;2-q

Cited by 3 publications

(2 citation statements)

References 2 publications

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“…The effect of antimicrobial modifying additives on the properties of oil bitumen lubricating coatings has received much less study. 23 It is known that traditional oil bitumen coatings are more exposed to the action of micro-organisms than are film coatings containing components that can be used by bacteria as a trophic substrate. 24,25 One way to improve the microbial resistance of coatings is to modify them with biocide substances which suppress the growth and replication of corrosion inducing micro-organisms.…”

Section: Resultsmentioning

confidence: 99%

Microbial Corrosion of Protective Coatings

Kopteva

Zanina

Козлова

2004

Surface Engineering

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Research studies have shown that protective coatings of diverse chemical composition represent a powerful factor stimulating the bacterial activity of corrosion inducers. On the film and mastic coatings investigated in the present paper, bacterial communities are formed, which consist of bacteria of various ecological trophic groups. Bacteria in a biofilm are characterised by high metabolic activity and the ability to destroy traditional coatings. As a result of microbial destruction, the physical mechanical and chemical properties of a material undergo significant changes. The characteristics of strength, elasticity and adhesion deteriorate, thus degrading the main function of the coatings, i.e.protection of metal against corrosion. An efficient method of protection against biodeterioration is the addition of corrosion inhibitors with biocide action into their composition. It was established that the population of bacteria on oil bitumen coatings modified by antimicrobial bonds is 1–4 orders lower than on materials with no such additives. Protection of underground structures against corrosion should be performed comprehensively with consideration of the biocorrosivity of soils and bioresistance of coatings.

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Section: Resultsmentioning

confidence: 99%

Microbial Corrosion of Protective Coatings

Kopteva

Zanina

Козлова

2004

Surface Engineering

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“…Strains of Pseudomonas pseudoalcaligenes 109, Bacillus subtilis 138, Rhodococcus erytropolis 102, and Stenotrophomonas maltophilia 142 were isolated at steel pipeline corrosion sites . The mixture of these strains was used for antibacterial testing.…”

Section: Methodsmentioning

confidence: 99%

New promising antifouling agent based on polymeric biocide polyhexamethylene guanidine molybdate

Протасов

Bardeau

Morozovskaya

et al. 2017

Enviro Toxic and Chemistry

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A new polymeric biocide polyhexamethylene guanidine (PHMG) molybdate has been synthesized. The obtained cationic polymer has limited water solubility of 0.015 g/100 mL and is insoluble in paint solvents. The results of acute toxicity studies indicate moderate toxicity of PHMG molybdate, which has a median lethal dose at 48 h of 0.7 mg/L for Daphnia magna and at 96 h of 17 mg/L for Danio rerio (zebrafish) freshwater model organisms. Commercial ship paint was then modified by the addition of a low concentration of polymeric biocide 5% (w/w). The painted steel panels were kept in Dnipro River water for the evaluation of the dynamics of fouling biomass. After 129-d exposure, Bryozoa dominated in biofouling of tested substrates, forming 86% (649 g/m ) of the total biomass on control panel surfaces. However, considerably lower Bryozoa fouling biomass (15 g/m ) was detected for coatings containing PHMG molybdate. Dreissenidae mollusks were found to form 88% (2182 g/m ) of the fouling biomass on the control substrates after 228 d of exposure, whereas coatings containing PHMG molybdate showed a much lower biomass value of 23.6 g/m . The leaching rate of PHMG molybdate in water was found to be similar to rates for conventional booster biocides ranging from 5.7 μg/cm /d at the initial stage to 2.2 μg/cm /d at steady state. Environ Toxicol Chem 2017;36:2543-2551. © 2017 SETAC.

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Impact of γ-irradiation on biofilm-formation by corrosion-relevant heterotrophic bacteria

Boretska¹,

Shavanova²,

Ruban³

et al. 2020

Naukovì dopovìdì Nacìonalʹnogo unìversitetu bìoresursiv ì priro

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At nuclear hazard sites, such as the Chernobyl reactor sarcophagus or Fukushima Nuclear Power Plant, radiation is one of the main factors influencing microbial communities including those involved in microbially influenced corrosion (MIC) of metal structures. By studying the impact of radiation on corrosion-relevant bacteria it may be possible in the future to predict changes in MIC. We believe that the composition and function of natural multi-species biofilms will change when exposed to the stress of ionizing radiation. To address this possibility, biofilm formation by Pseudomonas pseudoalcaligenes and Stenotrophomonas maltophilia were studied after exposure to a range of radiation dosages. Altered planktonic cell morphologies and biofilm architectures on submerged glass surfaces were noted 3 – 7 days after low-doasage sub-lethal irradiation (5.3 Gy) of samples at the micro-colony, macro-colony and mature biofilm stages of development. Furthermore, significant differences in the percentage area covered by biofilms and the release of viable planktonic cells was also noted. These observations suggested that exposure, considered as insignificant levels of irradiation, can be enough to alter biofilm formation of corrosion-relevant bacteria. Such low dosage radiation may have significant impact on soil microbial communities in nuclear hazard sites, potentially altering the MIC of exposed metal structures, their stability and service life of underground metal constructions.

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Soil aggressiveness influence on the deterioration of protective insulating coatings

Cited by 3 publications

References 2 publications

Microbial Corrosion of Protective Coatings

Microbial Corrosion of Protective Coatings

New promising antifouling agent based on polymeric biocide polyhexamethylene guanidine molybdate

Impact of γ-irradiation on biofilm-formation by corrosion-relevant heterotrophic bacteria

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