Enhancing the efficacy of electrolytic chlorination for ballast water treatment by adding carbon dioxide SCIE SCOPUS

Cited 13 time in WEB OF SCIENCE Cited 14 time in Scopus
Title
Enhancing the efficacy of electrolytic chlorination for ballast water treatment by adding carbon dioxide
Author(s)
Cha, Hyung-Gon; Seo, Min-Ho; Lee, Heon-Young; Lee, Ji-Hyun; Lee, Dong-Sup; Shin, Kyoungsoon; Choi, Keun-Hyung
KIOST Author(s)
Shin, Kyoung Soon(신경순)
Publication Year
2015-06-15
Abstract
We examined the synergistic effects of CO2 injection on electro-chlorination in disinfection of plankton and bacteria in simulated ballast water. Chlorination was performed at dosages of 4 and 6 ppm with and without CO2 injection on electro-chlorination. Testing was performed in both seawater and brackish water quality as defined by IMO G8 guidelines. CO2 injection notably decreased from the control the number of Artemia franciscana, a brine shrimp, surviving during a 5-day post-treatment incubation (1.8 and 23 log(10) reduction in seawater and brackish water, respectively at 6 ppm TRO + CO2) compared with water electro-chlorinated only (1.2 and 1.3 log(10) reduction in seawater and brackish water, respectively at 6 ppm TRO). The phytoplankton Tetraselmis suecica, was completely disinfected with no live cell found at >4 ppm TRO with and without CO2 addition. The effects of CO2 addition on heterotrophic bacterial growth was not different from electro-chlorination only. Total residual oxidant concentration (TRO) more rapidly declined in electro-chlorination of both marine and brackish waters compared to chlorine + CO2 treated waters, with significantly higher amount of TRO being left in waters treated with the CO2 addition. Total concentration of trihalomethanes (THMs) and haloacetic acids (HAAs) measured at day 0 in brackish water test were found to be 2- to 3-fold higher in 6 ppm TRO + CO2-treated water than in 6 ppm TRO treated water. The addition of CO2 to electro-chlorination may improve the efficiency of this sterilizing treatment of ballast water, yet the increased production of some disinfection byproducts needs further study. (C) 2015 Elsevier Ltd. All rights reserved.
ISSN
0025-326X
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/2459
DOI
10.1016/j.marpolbul.2015.03.025
Bibliographic Citation
MARINE POLLUTION BULLETIN, v.95, no.1, pp.315 - 323, 2015
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Subject
DISINFECTION BY-PRODUCTS; CO2; ORGANISMS; MODELS
Keywords
Electrochlorination; Carbon dioxide; Synergistic effects; Ballast water
Type
Article
Language
English
Document Type
Article
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Related Researcher
Research Interests

Plankton ecology and physiology,Risk assessment,Ship ballast water,플랑크톤 생리, 생태,위해성평가,선박평형수

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