Efficacy of atrazine pesticide reduction in aqueous solution using activated carbon, ozone and a combination of both

In this study, the reduction of emerging organic contaminant atrazine in water, was investigated by adsorption, oxidation and a combination both technologies. Adsorption tests were performed using method ASTM D3860-98 with two types activated carbon: powdered carbon granular carbon. For tests, advanced ozone technology used. Finally, combined firstly adsorption treatment applied followed then order reversed. We studied removal percentage different treatments at various reaction times. Results for under study showed that, an initial concentration 0.7 mg L ?1 dose 16 carbon, contact times 60 min, 24 h 48 h, reductions 81%, 92% 94% respectively obtained. same contaminant, but instead min 2%, rising to 34% 35% after time, respectively. concentration, when 19.7 , time 18 93% obtained, by-products also produced. treatments, doses as previously indicated, better obtained started ozone, achieving 90% observing 17 minute 3 day granulated When reversed starting 52 4 days, • Powdered greater than The reaches higher compared any Oxidation is very effective removing atrazine, generates by-products. Both (adsorption oxidation) significantly reduced pesticide. (AC/O O /AC), more 90%.