TY - JOUR
T1 - A low-energy intensive electrochemical system for the eradication of Escherichia coli from ballast water
T2 - Process development, disinfection chemistry, and kinetics modeling
AU - Nadeeshani Nanayakkara, K. G.
AU - Khorshed Alam, A. K.M.
AU - Zheng, Yu Ming
AU - Paul Chen, J.
N1 - Copyright:
Copyright 2012 Elsevier B.V., All rights reserved.
PY - 2012/6
Y1 - 2012/6
N2 - The invasion of biological organisms via ballast water has created threats to the environment and human health. In this study, a cost-effective electrochemical disinfection reactor was developed to inactivate Escherichia coli, one of the IMO-regulated indicator microbes, in simulated ballast water. The complete inactivation of E. coli could be achieved within a very short time (150, 120, or 60s) with an energy consumption as low as 0.0090, 0.0074 or 0.0035kWh/m 3 for ballast water containing E. coli at concentrations of 10 8, 10 7 and 10 6CFU/100mL, respectively. Electrochemical chlorination was the major disinfection mechanism in chloride-abundant electrolytes, whereas oxidants such as ozone and free radicals contributed to 20% of the disinfection efficiency in chloride-free electrolytes. Moreover, a disinfection kinetics model was successfully developed to describe the inactivation of E. coli.
AB - The invasion of biological organisms via ballast water has created threats to the environment and human health. In this study, a cost-effective electrochemical disinfection reactor was developed to inactivate Escherichia coli, one of the IMO-regulated indicator microbes, in simulated ballast water. The complete inactivation of E. coli could be achieved within a very short time (150, 120, or 60s) with an energy consumption as low as 0.0090, 0.0074 or 0.0035kWh/m 3 for ballast water containing E. coli at concentrations of 10 8, 10 7 and 10 6CFU/100mL, respectively. Electrochemical chlorination was the major disinfection mechanism in chloride-abundant electrolytes, whereas oxidants such as ozone and free radicals contributed to 20% of the disinfection efficiency in chloride-free electrolytes. Moreover, a disinfection kinetics model was successfully developed to describe the inactivation of E. coli.
KW - Ballast water
KW - E. coli
KW - Electrochemical disinfection
KW - Kinetics modeling
UR - http://www.scopus.com/inward/record.url?scp=84861944098&partnerID=8YFLogxK
U2 - 10.1016/j.marpolbul.2012.01.018
DO - 10.1016/j.marpolbul.2012.01.018
M3 - 文章
C2 - 22483951
AN - SCOPUS:84861944098
VL - 64
SP - 1238
EP - 1245
JO - Marine Pollution Bulletin
JF - Marine Pollution Bulletin
SN - 0025-326X
IS - 6
ER -