• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>NACE annual conference & exposition >MICROBIOLOGICALLY INFLUENCED CORROSION OF CARBON STEELIN MODEL SOIL
【24h】

MICROBIOLOGICALLY INFLUENCED CORROSION OF CARBON STEELIN MODEL SOIL

机译：碳-斯蒂林模型土壤的微生物学腐蚀

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

To simulate microbiologically influenced corrosion (MIC) of carbon steel in the subterraneanenvironment, artificial soil consisting of silica sand, microbes, and medium was used.Sulfate-reducing bacteria (SRB) and activated sludge from a municipal wastewater plant were usedas model microbes. Incubation was carried out under aerobic and anaerobic conditions. Corrodedmean depth (CMD) under aerobic conditions with activated sludge inoculation reached 34.1 μm andwas 28 times as much as that under anaerobic conditions after incubation for 56 d. Sole existence ofSRB didn't accelerate carbon steel corrosion, while addition of activated sludge accelerated thecorrosion.The influence of water content in artificial soil on carbon steel MIC was analyzed. Model soils ofsilica sand with 100, 60 and 20% water content in the voids of the soils were prepared. The modelsoils were inoculated with activated sludge. The existence of air space and the uneven distributionof medium on the carbon steel coupons accelerated corrosion. The heterogeneity that resulted frombacteria had the same effects as the uneven distribution of the medium.
机译：为了模拟地下环境中碳钢的微生物学腐蚀（MIC），使用了由硅砂，微生物和培养基组成的人工土壤，并使用了市政污水厂的硫酸盐还原细菌（SRB）和活性污泥作为模型微生物。温育在有氧和厌氧条件下进行。需氧条件下，活性污泥接种后，经过56 d孵育的腐蚀平均深度（CMD）达到34.1μm，是厌氧条件下的28倍。单一SRB的存在并不能促进碳钢的腐蚀，而活性污泥的添加却可以加速腐蚀。分析了人工土壤中水分对碳钢MIC的影响。制备了在土壤孔隙中含水量分别为100％，60％和20％的硅砂模型土壤。用活性污泥接种模型土壤。空气空间的存在和碳钢试样上介质的不均匀分布加速了腐蚀。由细菌引起的异质性与培养基的不均匀分布具有相同的效果。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号