Biofouling and Biofilm Processes Section, Water & Steam Chemistry Division, Bhabha Atomic Research Centre, Kalpakkam 603 102, Tamil Nadu, India.
Biofouling and Biofilm Processes Section, Water & Steam Chemistry Division, Bhabha Atomic Research Centre, Kalpakkam 603 102, Tamil Nadu, India; Homi Bhabha National Institute, Anushakti Nagar, Mumbai 400 094, India.
Mar Pollut Bull. 2017 Nov 30;124(2):803-810. doi: 10.1016/j.marpolbul.2017.01.023. Epub 2017 Jan 19.
Chlorine dioxide (ClO) is seen as an effective alternative to chlorine, which is widely used as an antifouling biocide. However, data on its efficacy against marine macrofoulants is scanty. In this study, acute toxicity of ClO to larval forms of the fouling barnacle Amphibalanus reticulatus was investigated. ClO treatment at 0.1mg/L for 20min elicited 45-63% reduction in naupliar metamorphosis, 70% inhibition of cyprid settlement and 80% inhibition of metamorphosis to juveniles. Increase in concentration to 0.2mg/L did not result in any significant difference in the settlement inhibition or metamorphosis. Treatment with 0.2mg/L of ClO elicited substantial reduction in the settlement of barnacle larvae compared to control. The study indicates the possibility of using ClO as an alternative antifouling biocide in power plant cooling water systems. However, more work needs to be done on the environmental effects of such switchover, which we are currently undertaking.
二氧化氯（ClO）被视为一种有效的替代氯的方法，氯被广泛用作防污杀生剂。然而，关于其对海洋大型污着生物效果的数据却很少。在这项研究中，研究了 ClO 对污着藤壶幼虫的急性毒性。在 20 分钟内以 0.1mg/L 的 ClO 处理，导致无节幼体变态减少 45-63%，幼体附着抑制 70%，变态为幼体抑制 80%。增加浓度至 0.2mg/L 不会导致附着抑制或变态的任何显著差异。与对照组相比，0.2mg/L 的 ClO 处理会导致藤壶幼虫的附着大量减少。研究表明，ClO 有可能作为替代电厂冷却水系统中的防污杀生剂。然而，我们目前正在进行有关这种转换对环境影响的更多工作。
