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Abstract
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tIn this study, a new batch cell with undivided operating and processing units based on electrocoagulationwas used for wastewater treatment of egg processing industries. In addition, the influence of operationalparameters such as current density, retention time and type of electrode on the amount of chemicaloxygen demand (COD), total suspended solids (TSS) and total coliform (TC) removal were investigated.The results showed that COD, TSS and TC removal efficiency increases with increasing current densityand retention time. Of course it should be noted that, in the final evaluation of these parameters, theoperational costs, electrochemical energy consumption (EEC) and electrode consumption costs should beconsidered. Maximum removal of COD (99%), TSS (98.5%) and TC (99.99%) were achieved by an aluminumelectrode in 10 min retention time and a current density of 6.6 mA cm−2. In addition, the aluminum elec-trode with EEC of 14.2 kW h m-3and the anode consumption of 0.53 mg cm−2is cost efficient as comparedwith an iron electrode. According to results, treatment of egg processing industry wastewater with a lowvolume of wastewater and high amount of organic load is carried out easily by electrocoagulation process(ECP) as compared to other common methods. Moreover, the proposed reactor has a high efficiency inthe treatment of industries wastewater and produces an effluent with TSS and COD lower than 5 mg L-1which has a standard quality for discharge in the environment.
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