Control of bacterial growth in water using synthesized inorganic disinfectant
Control of bacterial growth in water using synthesized inorganic disinfectant
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DOI：
10.1016/j.chemosphere.2003.11.014
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发表时间：
2004-05-01
期刊：
影响因子：
8.8
通讯作者：
Yoon, J
中科院分区：
文献类型：
--
作者：
Kim, J;Cho, M;Yoon, J
氯是控制冷却塔中细菌生长的一种流行方法。然而，也存在一些缺点，如难以保持消毒效果，特别是在高温和pH值较高的情况下。为了克服这些困难，最近开发了一种以银和铜为基础的无机消毒剂，称为EEKO-ball(商标名)。EEKO球是由特定的陶瓷和涂层材料制成的。本研究旨在评价EEKO-ball的药效，并与银离子(Ag+)和铜离子(Cu2+)进行比较。此外，还对几种冷却塔系统的细菌生长控制进行了现场研究。结果表明，在25℃、pH 7.3、银0.05mg1(-1)、铜0.05mg1(-1)的EEKO球状原液中，对99%的大肠杆菌作用15min。在25℃，PLI 7.3下，EEKO-ball在灭活大肠杆菌方面的效率大约是银离子和铜离子的四倍。冷却塔中细菌生长的控制被发现是有效的，在一次性安装EEKO球后持续了两个多月。总体而言，这项研究表明，EEKO-Ball可以有效地作为一种无机消毒剂来控制细菌生长。(C)2003爱思唯尔有限公司。保留所有权利。
Chlorine is a popular method for controlling bacterial growth in cooling towers. However, there are several drawbacks such as the difficulties in maintaining the disinfection efficacy particularly at high temperature and pH. In order to overcome these difficulties, an inorganic disinfectant based on silver and copper, which is called EEKO-BALL (commercial name), was recently developed. EEKO-BALL is made from specific ceramics and coating materials. This study was performed to evaluate the efficacy of EEKO-BALL and compare it with that of silver (Ag+) and copper (Cu2+) ions. In addition, a field study was undertaken to investigate the control of bacterial growth in several cooling tower systems. The results showed that the contact time required for inactivating 99% of E. coli was 15 min in the EEKO-BALL stock solution at 25 degreesC, pH 7.3, with 0.05 mg1(-1) Ag and 0.05 mg1(-1) Cu. EEKO-BALL was approximately four times more effective than silver and copper ions in inactivating E. coli at 25 degreesC, pli 7.3. The control of bacterial growth in the cooling towers was found to be effective, lasting more than two months after a one-time installation of the EEKO-BALL. Overall, this study suggests that EEKO-BALL can effectively work as an inorganic disinfectant for bacterial growth control. (C) 2003 Elsevier Ltd. All rights reserved.