Decay of free residual chlorine in wells water of northern Brazil

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dc.contributor.authorVargas, Taise Ferreira
dc.contributor.authorBaía, Célia Ceolin
dc.contributor.authorMachado, Tatiana Lemos da Silva
dc.contributor.authorDorea, Caetano C.
dc.contributor.authorBastos, Wanderly Rodrigues
dc.date.accessioned2022-11-19T16:02:35Z
dc.date.available2022-11-19T16:02:35Z
dc.date.copyright2021en_US
dc.date.issued2021
dc.description.abstractThe concentration of chlorine in water declines as it reacts with various substances, causing decay of the residual free chlorine until its total consumption. In light of the typical characteristics of the water from protected dug wells and tube wells, this study aimed to evaluate the decay kinetics of free chlorine in the water of alternative individual supply (AIS) solutions used in the city of Porto Velho in the Brazilian Amazon region. The free chlorine decay constant in the water was evaluated by “bottle tests,” applying a first-order model. According to the results, the type of well and initial chlorine concentration significantly influences the free chlorine decay speed. The water samples from the tubular wells had lower chlorine demand levels, attributed to their better water quality. The simulation of the residual chlorine decay in the different supply sources is an important tool to support safe disinfection processes.en_US
dc.description.reviewstatusRevieweden_US
dc.description.scholarlevelFacultyen_US
dc.description.sponsorshipThis study was funded by the Brazilian National Research Council (CNPq, Grant no. 301912/2017-3).en_US
dc.identifier.citationVargas, T. F., Baía, C. C., Machado, T. L.d.S., Dórea, C. C., & Bastos, W. R. (2021). “Decay of free residual chlorine in wells water of northern Brazil.” Water, 13(7), 992. https://doi.org/10.3390/w13070992en_US
dc.identifier.urihttps://doi.org/10.3390/w13070992
dc.identifier.urihttp://hdl.handle.net/1828/14504
dc.language.isoenen_US
dc.publisherWateren_US
dc.subjectdrinking water qualityen_US
dc.subjectdisinfectionen_US
dc.subjectchlorine kineticsen_US
dc.subjectBrazilian Amazonen_US
dc.subjectfree chlorinationen_US
dc.titleDecay of free residual chlorine in wells water of northern Brazilen_US
dc.typeArticleen_US

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