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Open AccessArticle

Activated Carbon and Ozone to Reduce Simazine in Water

University Institute of Water and Environmental Sciences, University of Alicante, PO 99, 03080 Alicante, Spain
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Water 2020, 12(10), 2900; https://doi.org/10.3390/w12102900
Received: 7 September 2020 / Revised: 14 October 2020 / Accepted: 14 October 2020 / Published: 17 October 2020
(This article belongs to the Special Issue Water Economics and Water Distribution Management)
In this study, the reduction of the pesticide simazine at an initial concentration of 0.7 mg L−1 in water has been investigated using two different technologies: adsorption with powdered and granulated activated carbon, advanced oxidation processes with ozone and finally, the combination of both technologies. The results obtained for a carbon dose of 16 mg L−1 show that powdered activated carbon, with contact times of 60 min, obtained 81% of reduction and in 24 h 92%, while granulated activated carbon at 60 min obtained a reduction of 2%, rising to 34% after 24 h of contact time. Therefore, powdered activated carbon achieves better reductions compared to granulated; when ozone was applied at a dose of 19.7 mg L−1, with a reaction time of 18 min, a reduction of 93% was obtained, achieving a better reduction in less time than with adsorption treatments; however, during oxidation, by-products of simazine were produced. In the combined treatments, with the same doses of carbon and ozone mentioned above, the treatment that starts with ozone followed by activated carbon powder is recommended due to the adsorption in the last phase reaching a 90% reduction of the simazine and its by-products in 38 min of time. View Full-Text
Keywords: simazine; powdered activated carbon (PAC); granulated activated carbon (GAC); ozone; combined treatments; emerging contaminants simazine; powdered activated carbon (PAC); granulated activated carbon (GAC); ozone; combined treatments; emerging contaminants
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MDPI and ACS Style

Aldeguer Esquerdo, A.; Varo Galvañ, P.J.; Sentana Gadea, I.; Prats Rico, D. Activated Carbon and Ozone to Reduce Simazine in Water. Water 2020, 12, 2900.

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