• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Materials Engineering and Performance >Effect of Mixed-Species Biofilm on Copper Surfaces in Cooling Water System
【24h】

Effect of Mixed-Species Biofilm on Copper Surfaces in Cooling Water System

机译：混合水生物膜对冷却水系统铜表面的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This study aimed to investigate the formation and effect of a biofilm on copper heat exchangers in full-scale system conditions. A modified Pedersen device with copper coupons was installed in parallel to a heat exchanger system to investigate several physico-chemical parameters, such as bacterial enumeration, carbohydrate content of exopolymeric substances, weight loss of test/control coupons, Cu concentrations, and corrosion products over ten months. Findings of this study showed that planktonic bacterial cells attach to each other and form a mixed-species biofilm on the copper coupon surface even though copper is toxic to a variety of microorganisms. These results also revealed that the mixed-species biofilm has a corrosive effect on copper surfaces used in cooling water systems despite the presence of biocide and the corrosion inhibitor. Additionally, it was demonstrated that a shock-dosed biocide application increased the corrosion rate on copper surface in a real system. Preventing risk of microbiologically influenced corrosion entails appropriate material selection and proper/regular chemical treatment of cooling systems. The current study provides useful insights through the evaluation of corrosion of materials with microbiological techniques.
机译：这项研究旨在调查生物膜在全尺寸系统条件下在铜热交换器上的形成和作用。平行于热交换器系统安装了带有铜试管的改进的Pedersen设备，以研究几个物理化学参数，例如细菌计数，外聚合物质的碳水化合物含量，测试/控制试管的重量损失，Cu浓度以及腐蚀产物。十个月这项研究的发现表明，即使铜对多种微生物有毒，浮游细菌细胞也会相互附着并在铜试样表面形成混合生物膜。这些结果还表明，尽管存在杀生物剂和腐蚀抑制剂，但混合物种生物膜对冷却水系统中使用的铜表面具有腐蚀作用。此外，事实证明，在真实系统中，施加冲击剂量的杀菌剂可提高铜表面的腐蚀速率。要防止受到微生物影响的腐蚀风险，就必须对冷却系统进行适当的材料选择和适当/常规的化学处理。通过微生物技术评估材料的腐蚀，本研究提供了有用的见识。

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