Effect of sulfate on the transformation of corrosion scale composition and bacterial community in cast iron water distribution pipes
文献类型：期刊论文
| 作者 | Yang, Fan ; Shi, Baoyou ; Bai, Yaohui ; Sun, Huifang ; Lytle, Darren A. ; Wang, Dongsheng |
| 刊名 | WATER RESEARCH
 |
| 出版日期 | 2014 |
| 卷号 | 59期号:1页码:46-57 |
| 关键词 | Drinking water distribution system (DWDS) Corrosion scale Iron release Bacterial community Sulfate |
| ISSN号 | 0043-1354 |
| 中文摘要 | The chemical stability of iron corrosion scales and the microbial community of biofilm in drinking water distribution system (DWDS) can have great impact on the iron corrosion and corrosion product release, which may result in "red water" issues, particularly under the situation of source water switch. In this work, experimental pipe loops were set up to investigate the effect of sulfate on the dynamical transformation characteristics of iron corrosion products and bacterial community in old cast iron distribution pipes. All the test pipes were excavated from existing DWDS with different source water supply histories, and the test water sulfate concentration was in the range of 50-350 mg/L. Pyrosequencing of 16S rRNA was used for bacterial community analysis. The results showed that iron release increased markedly and even "red water" occurred for pipes with groundwater supply history when feed water sulfate elevated abruptly. However, the iron release of pipes with only surface water supply history changed slightly without noticeable color even the feed water sulfate increased multiply. The thick-layered corrosion scales (or densely distributed tubercles) on pipes with surface water supply history possessed much higher stability due to the larger proportion of stable constituents (mainly Fe3O4) in their top shell layer; instead, the rather thin and uniform non-layered corrosion scales on pipes with groundwater supply history contained relatively higher proportion of less stable iron oxides (e.g. beta-FeOOH, FeCO3 and green rust). The less stable corrosion scales tended to be more stable with sulfate increase, which was evidenced by the gradually decreased iron release and the increased stable iron oxides. Bacterial community analysis indicated that when switching to high sulfate water, iron reducing bacteria (IRB) maintained dominant for pipes with stable corrosion scales, while significant increase of sulfur oxidizing bacteria (SOB), sulfate reducing bacteria (SRB) and iron oxidizing bacteria (IOB) was observed for pipes with less stable corrosion scales. (C) 2014 Elsevier Ltd. All rights reserved. |
| WOS记录号 | WOS:000337861400005 |
| 公开日期 | 2015-03-26 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/9530]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Yang, Fan,Shi, Baoyou,Bai, Yaohui,et al. Effect of sulfate on the transformation of corrosion scale composition and bacterial community in cast iron water distribution pipes[J]. WATER RESEARCH,2014,59(1):46-57. |
| APA | Yang, Fan,Shi, Baoyou,Bai, Yaohui,Sun, Huifang,Lytle, Darren A.,&Wang, Dongsheng.(2014).Effect of sulfate on the transformation of corrosion scale composition and bacterial community in cast iron water distribution pipes.WATER RESEARCH,59(1),46-57. |
| MLA | Yang, Fan,et al."Effect of sulfate on the transformation of corrosion scale composition and bacterial community in cast iron water distribution pipes".WATER RESEARCH 59.1(2014):46-57. |
入库方式： OAI收割
来源：生态环境研究中心
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