1.Ozone and peroxone disinfection of Toxocara canis eggs in water
Ibá ; ñ ; ez-Cervantes, G. ; Cruz-Bautista, J.D. ; Vargas-De-Leó ; n, C. ; Rojas-Bernabé ; , A. ; Ramí ; rez-Cortina, C.R. ; Nogueda-Torres, B.
Tropical Biomedicine 2024;41(No.1):45-51
Water pollution in developing countries continues to be a major health problem due to various
anthropological activities that contribute to the spread of many parasitic diseases, including those
caused by helminths. The aim of this study is to explore the ability of ozone and peroxone to disinfect
drinking water contaminated samples with Toxocara canis eggs. The oxidants used were ozone and
ozone-hydrogen peroxide combination. The treatment of Toxocara canis eggs was carried out in a 50
ml reactor with an operating volume of 10 ml. The pH conditions (5, 7 and 10) were varied for each
treatment. The treatment effect was calculated by counting eggs and examining the condition of the
larvae larval condition (whole, broken and hatched larvae) using an optical microscope. The experiment
was carried out by exposing the eggs for 60 and 120 minutes to ozone and peroxone. The best results
were obtained for helminths treated with the ozone/hydrogen peroxide combination at pH 10, with an
inactivation of 79.2%. The synergistic effect of ozone combined with hydrogen peroxide allows higher
helminth egg inactivation rates, demonstrating that advanced oxidation processes are a real alternative
to apply in the inactivation of Toxocara canis eggs. The results obtained in this study show that the
ozone and peroxone treatment could be a useful disinfection process to destroy or inactivate Toxocara
canis eggs in processes commonly applied in water treatment.
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