Abstract：
:The disinfection of helminth eggs and Escherichia coli contaminated aqueous solutions, was studied using an electro-Fenton reactor equipped with a polarized activated carbon (AC) packed bed and two chambers loaded with cation exchange resins. Experiments using different arrangements and operation conditions, revealed that effective elimination of Escherichia coli takes place in all electrochemical disinfection tests. For the more resistant helminth eggs however, adsorption, electro-oxidation and electro-Fenton experiments showed retention within the reactor and pathogen inactivation values of 0, 16, and 25%, respectively. Using helminth eggs concentration data in different sections of the reactor, optical microscopy analysis and an exploratory computer simulation, differences in the disinfection performance were explained and new recirculation and flow direction and polarization switching operation schemes were defined. The corresponding experiments revealed that the effective coupling between adsorption and electro-Fenton phenomena, all along the AC packed bed compartment, results in 100% inactivation of helminth eggs.
journal_name
Chemospherejournal_title
Chemosphereauthors
Robles I,Becerra E,Barrios JA,Maya C,Jiménez B,Rodríguez-Valadez FJ,Rivera F,García-Espinoza JD,Godínez LAdoi
10.1016/j.chemosphere.2020.126260subject
Has Abstractpub_date
2020-07-01 00:00:00pages
126260eissn
0045-6535issn
1879-1298pii
S0045-6535(20)30453-7journal_volume
250pub_type
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