Studies on the electrochemical disinfection of water containing Escherichia coli using a Dimensionally Stable Anode

Abstract

The aim of this work was to investigate the disinfectant effect of electrolysis on chlorine-free water, artificially contaminated with Escherichia coli (CCT -1457)

Effect of electrogenerated hydroxyl radicals, active chlorine and organic matter on the electrochemical inactivation of Pseudomonas aeruginosa using BDD and dimensionally stable anodes

“…The inactivation ability of EO depends on the nature of the anode and the ions contained in solution. The antimicrobial action of physisorbed BDD(  OH) originated from reaction (1) in chloride-free medium has been well proven [25,[29][30][31][32][33]. A quicker disinfection is usually achieved in the presence of chloride ions because of the rapid attack of active chlorine species, being Pt and dimensionally stable anodes more efficient than BDD [26,27,[34][35][36][37].…”

“…A quicker disinfection is usually achieved in the presence of chloride ions because of the rapid attack of active chlorine species, being Pt and dimensionally stable anodes more efficient than BDD [26,27,[34][35][36][37]. However, most of the studies have been focused on the inactivation of Escherichia coli as process indicator [31,33,36], with much less attention on other hazardous bacteria such as Pseudomonas aeruginosa. Pseudomonas are aerobic, rod-shaped Gram-negative bacteria, which are distinguished by their versatile metabolism.…”

Colour Degradation of Simulated Textile Effluent by Electrolytic Treatment and Ecotoxicological Evaluation

“…Through electrochemical reactions, the electrolytic treatment process can transform recalcitrant substances that compound pollutants. It can also disinfect the effluent through the production of chlorine (Gusmão et al 2010). In general, the electrolytic process removes organic pollutants from the effluent by direct or indirect oxidative mechanisms (Bahadir and Abdurrahman 2009).…”

Electrocoagulation Process in the Context of Disinfection Mechanism

“…The literature presents numerous explications for the routes of killing microorganisms via electrochemical technologies, which could be listed in In the EC process, in addition to the aforesaid routes, the microbes may be demobilized thanks to the direct adsorption on the surface of the anode pursued by electron transfer, and physical elimination through floating pathogens with formed hydrogen gas and/or precipitating with the produced flocs [34] [59] [60]. Table 2 presents the detailed EC reactions in the case of Fe [62] and Al electrodes.…”