Chen Shuiping, Hu Weidong, Hong Jianxun, Sandoe Steve
School of Resource & Environmental Engineering, Wuhan University of Technology, Wuhan 430070, PR China.
School of Navigation, Wuhan University of Technology, Wuhan 430070, PR China.
Mar Pollut Bull. 2016 Apr 15;105(1):319-23. doi: 10.1016/j.marpolbul.2016.02.003. Epub 2016 Feb 12.
A novel PbO2/graphite felt electrode was constructed by electrochemical deposition of PbO2 on graphite felt and characterized by X-ray powder diffraction (XRD) and scanning electron microscopy (SEM) analysis. The prepared electrode is a viable technology for inactivation of Escherichia coli, Enterococcus faecalis, and Artemia salina as indicator organisms in simulated ballast water treatment, which meets the International Maritime Organization (IMO) Regulation D-2. The effects of contact time and current density on inactivation were investigated. An increase in current density generally had a beneficial effect on the inactivation of the three species. E.faecalis and A.salina were more resistant to electrochemical disinfection than E. coli. The complete disinfection of E.coli was achieved in <8min at an applied current density of 253A/m(2). Complete inactivation of E. faecalis and A.salina was achieved at the same current density after 60 and 40min of contact time, respectively. A. salina inactivation follows first-order kinetics.
通过在石墨毡上电沉积二氧化铅构建了一种新型的二氧化铅/石墨毡电极，并通过X射线粉末衍射（XRD）和扫描电子显微镜（SEM）分析对其进行了表征。所制备的电极是一种可行的技术，可用于在模拟压载水处理中灭活作为指示生物的大肠杆菌、粪肠球菌和卤虫，符合国际海事组织（IMO）D - 2规则。研究了接触时间和电流密度对灭活效果的影响。电流密度的增加通常对这三种生物的灭活有有益影响。粪肠球菌和卤虫比大肠杆菌对电化学消毒更具抗性。在施加电流密度为253A/m²时，不到8分钟即可实现大肠杆菌的完全消毒。在相同电流密度下，分别经过60分钟和40分钟的接触时间后，粪肠球菌和卤虫实现了完全灭活。卤虫的灭活遵循一级动力学。
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