Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Improvement in the microbially induced corrosion resistance of concrete sewers using electrodeposition
https://orcid.org/0000-0001-6358-8305
Abstract In this study, Cu2O/CuO and Cu were electrodeposited onto a mortar surface to protect concrete sewers from microbially induced corrosion. The effects of temperature and electrolyte pH on the antimicrobial performance of the electrodeposited specimens were investigated through surface analysis and measurements of bacteria inhibition rate during the exposure to Desulfovibrio desulfuricans and Acidithiobacillus thiooxidans. Variations in the number of sulphate-reducing bacteria (SRB) cells were determined directly using haemocytometer, and sulphate concentration and pH of sulphate-oxidizing bacteria (SOB) medium were measured to evaluate the bactericidal property against SOB. Results demonstrate that all the electrodepositited specimens exhibited a favourable bactericidal performance. In addition, a short-term simulated microbially induced corrosion experiment running for 30 days was conducted. Visual, physical and ions leaching investigations of mortar samples were performed to estimate the durability. Considering the integrity of the coated surface, bactericidal property, the leaching rate of Cu2+ ions, and permeability of the treated specimens, 60 °C and pH 11 were determined to be the optimum conditions for electrodeposition.
Highlights Optimum parameters of electrodeposition of Cu2O/CuO and Cu on the mortar substrate was investigated. The surface morphology and chemical composition of deposits were analyzed. The bactericidal property, permeability of specimens and leaching of Cu2+ ions after electrodepostion was studied.
Improvement in the microbially induced corrosion resistance of concrete sewers using electrodeposition
https://orcid.org/0000-0001-6358-8305
Abstract In this study, Cu2O/CuO and Cu were electrodeposited onto a mortar surface to protect concrete sewers from microbially induced corrosion. The effects of temperature and electrolyte pH on the antimicrobial performance of the electrodeposited specimens were investigated through surface analysis and measurements of bacteria inhibition rate during the exposure to Desulfovibrio desulfuricans and Acidithiobacillus thiooxidans. Variations in the number of sulphate-reducing bacteria (SRB) cells were determined directly using haemocytometer, and sulphate concentration and pH of sulphate-oxidizing bacteria (SOB) medium were measured to evaluate the bactericidal property against SOB. Results demonstrate that all the electrodepositited specimens exhibited a favourable bactericidal performance. In addition, a short-term simulated microbially induced corrosion experiment running for 30 days was conducted. Visual, physical and ions leaching investigations of mortar samples were performed to estimate the durability. Considering the integrity of the coated surface, bactericidal property, the leaching rate of Cu2+ ions, and permeability of the treated specimens, 60 °C and pH 11 were determined to be the optimum conditions for electrodeposition.
Highlights Optimum parameters of electrodeposition of Cu2O/CuO and Cu on the mortar substrate was investigated. The surface morphology and chemical composition of deposits were analyzed. The bactericidal property, permeability of specimens and leaching of Cu2+ ions after electrodepostion was studied.
Improvement in the microbially induced corrosion resistance of concrete sewers using electrodeposition
https://orcid.org/0000-0001-6358-8305
Abstract In this study, Cu2O/CuO and Cu were electrodeposited onto a mortar surface to protect concrete sewers from microbially induced corrosion. The effects of temperature and electrolyte pH on the antimicrobial performance of the electrodeposited specimens were investigated through surface analysis and measurements of bacteria inhibition rate during the exposure to Desulfovibrio desulfuricans and Acidithiobacillus thiooxidans. Variations in the number of sulphate-reducing bacteria (SRB) cells were determined directly using haemocytometer, and sulphate concentration and pH of sulphate-oxidizing bacteria (SOB) medium were measured to evaluate the bactericidal property against SOB. Results demonstrate that all the electrodepositited specimens exhibited a favourable bactericidal performance. In addition, a short-term simulated microbially induced corrosion experiment running for 30 days was conducted. Visual, physical and ions leaching investigations of mortar samples were performed to estimate the durability. Considering the integrity of the coated surface, bactericidal property, the leaching rate of Cu2+ ions, and permeability of the treated specimens, 60 °C and pH 11 were determined to be the optimum conditions for electrodeposition.
Highlights Optimum parameters of electrodeposition of Cu2O/CuO and Cu on the mortar substrate was investigated. The surface morphology and chemical composition of deposits were analyzed. The bactericidal property, permeability of specimens and leaching of Cu2+ ions after electrodepostion was studied.
Improvement in the microbially induced corrosion resistance of concrete sewers using electrodeposition
Zhu, Zhengyu (Autor:in) / Chu, Hongqiang (Autor:in) / Jiang, Sheng (Autor:in) / Guo, Ming-Zhi (Autor:in) / Xu, Yi (Autor:in) / Liang, Yunchao (Autor:in) / Jiang, Linhua (Autor:in)
04.10.2022
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
COMPOSITIONS FOR CONTROLLING MICROBIALLY INDUCED CONCRETE CORROSION
| Europäisches Patentamt | 2023
Controlling biogenic corrosion of concrete sewers
| British Library Conference Proceedings | 1994
Microbially Induced Corrosion and Biodegradation
| British Library Online Contents | 1998
| Engineering Index Backfile | 1903