Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/18041
Title: Ballast water treatment using electrochemical disinfection technology
Authors: K.G. NADEESHANI NANAYAKKARA
Keywords: Ballast water, Chlorine, Disinfection, Kinetics, Radicals, Rare metal oxide
Issue Date: 13-Jan-2010
Source: K.G. NADEESHANI NANAYAKKARA (2010-01-13). Ballast water treatment using electrochemical disinfection technology. ScholarBank@NUS Repository.
Abstract: Transport of ships¿ ballast water has been identified as a vector of biological invasion. International Maritime Organization has introduced standards for maximum allowable levels of living organisms in discharging ballast water. However successful technologies to treat ballast water are limited. The main aim of this study was to investigate the ability of utilizing the electrochemical disinfection technology in ballast water treatment. In order to accomplish this main aim, firstly, an electrochemical disinfection reactor was designed, fabricated, optimized, and tested successfully in laboratory and pilot scales. Kinetics of disinfection in the proposed reactor system was studied based on the mass balance concept. It was found that the initial population of bacteria (E. coli and E. faecalis) affected the kinetic constants. Rare metal oxide coated electrode was prepared, characterized, and tested for its performance successfully. In order to understand the disinfection mechanism, generation of disinfectants at rare metal oxide coated anode and at uncoated anode as well as the disinfection behavior under different conditions were studied.
URI: http://scholarbank.nus.edu.sg/handle/10635/18041
Appears in Collections:Ph.D Theses (Open)

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