Novel Approaches for Biocorrosion Mitigation in Sewer Systems

Chemistry

Petros Samaras¹  Georgios Fytianos¹  Efthimios Papastergiadis¹  Dimitra Banti¹  Minas Yiangou²  Esmeralda Dushku² 

[1] Department of Food Science and Technology, International Hellenic University, 57400 Thessaloniki, Greece;Department of Genetics, Development & Molecular Biology, School of Biology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece;

关键词: biocorrosion;    biocorrosion inhibitors;    microbial corrosion;    concrete sewers;   

DOI  :  10.3390/chemistry3040085

来源: DOAJ

【 摘 要 】

Concrete sewer pipes can be corroded by the biogenic sulfuric acid (H₂SO₄) generated from microbiological activities in a process called biocorrosion or microbiologically induced corrosion (MIC). In this study, inhibitors that can reduce Acidithiobacillus thiooxidans growth and thus may reduce the accumulation of biofilm components responsible for the biodegradation of concrete were used. D-tyrosine, tetrakis hydroxymethyl phosphonium sulfate (THPS) and TiO₂ nanoparticles were investigated as potential inhibitors of sulfur-oxidizing bacteria (SOB) growth. Results showed that most of the chemicals used can inhibit SOB growth at a concentration lower than 100 mg/L. TiO₂ nanoparticles exhibited the highest biocide effect and potential biocorrosion mitigation activity, followed by D-tyrosine and THPS.

【 授权许可】

Unknown