Performance assessment of oxidants as a biocide for biofouling control in industrial seawater cooling towers

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Journal Article
Journal of Industrial and Engineering Chemistry, 2018, 59 pp. 127 - 133
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© 2017 The Korean Society of Industrial and Engineering Chemistry Biofouling can significantly hamper the efficiency of seawater cooling towers. The aim of this study was to investigate the effectiveness of alternative oxidants (i.e. ozone (O3) and chlorine dioxide (ClO2)) comparing with commonly being used chlorine in biofouling control. Effects of cycle of concentration, temperature and oxidant dosage along with residual decay and kinetics were studied. Even at lower oxidant dosage (total residual oxidant equivalent = 0.1 mg/l Cl2), ClO2 showed a better disinfection effect compared to chlorine and O3. Results of bench-scale studies will be helpful in the selection of appropriate oxidant for seawater cooling tower operation.
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