Biocorrosion active

Dithazolium salt (141) displays fungicidal and acaricidal activities <82JAP82l83770), and salts of the type (248) are shown to be inhibitors of biocorrosion of metals <90URP1587049). 

This is a general name for a wide variety of corrosion processes that may be actively or passively influenced, or induced, by an even wider variety of microbiological organisms. The electrochemical reactions that occur always result in metal wastage, as with all other forms of corrosion the most active biocorrosion processes primarily involve sessile bacteria rather than planktonic bacteria, algae, or fungi. 

It may also be difficult to distinguish between passive and active forms of biocorrosion, as they may occur at the same time biofilm accumulations on metal surfaces will naturally contain live organisms (including slime producers, sulfate reducers, and acid producers), as well as dead bacteria, excretion products, trapped particles, and perhaps oil and grease or other foulants. 

Microbial activities that produce sulfides, organic, or inorganic acids causing direct metal oxidation are major driving forces in biocorrosion. Biochemical corrosion is enhanced by stagnant water, soil, and organic products. 

Biocorrosion aggressiveness of the underground space is formed due to accumulation of products of bacterial metabolism, carbon dioxide, hydrogen sulphide, mineral and organic acids, as well as enzymes. In addition, microorganisms are capable of retrieving the missing elements necessary for their vital activity, from the crystal lattice of minerals. 

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