The influence of sodium hypochlorite biocide on the corrosion of carbon steel in reclaimed water used as circulating cooling water

被引：26
|
作者：
Su, Weina [1 ]
Tian, Yimei [1 ]
Peng, Sen [1 ]
机构：
[1] Tianjin Univ, Sch Environm Sci & Engn, Tianjin 300072, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2014年 / 315卷
基金：
高等学校博士学科点专项科研基金;
关键词：
Carbon steel; Electrochemical impedance spectroscopy; Polarisation; Microbiological corrosion; MILD-STEEL; INHIBITOR; BIOFILM; COPPER; REUSE;
D O I：
10.1016/j.apsusc.2014.07.095
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
In this paper, we investigated the influence of sodium hypochlorite (NaClO) biocide on the corrosion of carbon steel in four different conditions during one dosing cycle. The results from the polarisation curve and electrochemical impedance spectroscopy (EIS) indicated that NaClO could affect the activity of microorganisms, leading to corrosion inhibition. The equivalent circuits had two time constants in the presence of biocide, which suggested that an oxide layer of NaClO was formed on the carbon steel surface. Environmental scanning electron microscopy (ESEM) and energy dispersive spectroscopy (EDS) were both employed to demonstrate that NaClO produced a good antibacterial activity, thereby indirectly retarding corrosion while simultaneously inhibiting scaling. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：95 / 103
页数：9
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