In this work, we introduce a new type of electrochemical disinfection system, which functions both seawater disinfection and neutralization without any chemical treatments, named as the combined system for disinfection and neutralization (CSDN). By employing a rechargeable seawater battery system[1-3], the CSDN conducts seawater disinfection and the neutralization of remained TRO during charge and discharge processes, respectively. The disinfection efficiency of total chlorine (TC), such as HOCl and OCl, produced during charging is evaluated by using Escherichia coli and Enterococcus aquamarines. The remained TRO in disinfected seawater is removed by discharging, where the TRO (TC) are reduced into chloride ions, while providing electricity to external loads. The mechanisms behind the generation and neutralization of TRO are discussed. The proposed CSDN would provide an effective solution to lower energy consumption for seawater disinfection through the battery technology and an interdisciplinary approach to connect between the disinfection and electrochemical energy storage technologies.
References :
[1] Kim, J.-K.; Mueller, F.; Kim, H.; Bresser, D.; Park, J.-S.; Lim, D.-H.; Kim, G.-T.; Passerini, S.; Kim, Y. Rechargeable-Hybrid-Seawater Fuel Cell. NPG Asia Mater. 2014, 6, e144.
[2] Kim, H.; Park, J.-S.; Sahgong, S. H.; Park, S.; Kim, J.-K.; Kim, Y. Metal-Free Hybrid Seawater Fuel Cell with an Ether-Based Electrolyte. J. Mater. Chem. A 2014, 2, 19584−19588.
[3] Kim, J.-K.; Mueller, F.; Kim, H.; Jeong, S.; Park, J.-S.; Passerini, S.; Kim, Y. Eco-friendly Energy Storage System: Seawater and Ionic Liquid Electrolyte. ChemSusChem 2016, 9, 42−49.