ZHANGHui,ZHANGJie,MIAOZi-yi,et al.Optimization of Growth Characteristics and Corrosion Behavior of an Iron-oxidizing Bacterium in Water Supply Pipelines[J].China Water & Wastewater,2025,41(5):58-64.
Optimization of Growth Characteristics and Corrosion Behavior of an Iron-oxidizing Bacterium in Water Supply Pipelines
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第41卷
Number:
第5期
Page:
58-64
Column:
Date of publication:
2025-03-01
- Abstract:
- The corrosion of water supply networks has emerged as a critical concern within the water supply industry, with microbial-induced corrosion being a significant contributing factor. In conjunction with the iron-oxidizing bacterium LSS-1 isolated from water supply pipelines, this study investigated the impact of carbon sources, pH, C/N ratio, and temperature on its growth. The optimal growth conditions for LSS-1 were identified as pH of 7.28, C/N ratio of 5.32, and temperature of 28.45 ℃. The relative influence of these three factors on LSS-1 growth in descending order was pH, C/N ratio and temperature. Furthermore, the corrosion process of LSS-1 was systematically evaluated through quantitative analysis of total iron concentration, ferrous iron concentration, corrosion rate, and characteristics of corrosion products. The concentrations of total iron and ferrous iron initially increased and subsequently decreased, reaching their peak values on 16th day at 12.56 mg/L and 0.31 mg/L, respectively. The corrosion rate peaked at 0.73 mm/a on 10th day and reached its minimum value of 0.21 mm/a on 30th day.
Last Update:
2025-03-01