Aqualuz: a new solar disinfection device for treatment of cistern water

Detalhes bibliográficos
Autor(a) principal: Magalhães, Jefferson Hannover Faustino
Data de Publicação: 2022
Outros Autores: Bezerra, Letícia Nunes, Santos, Anna Luísa Beserra, Silveira, Cleiton da Silva, Nunes, Ana Bárbara de Araújo, Lima Neto, Iran Eduardo
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da Universidade Federal do Ceará (UFC)
Texto Completo: http://www.repositorio.ufc.br/handle/riufc/69162
Resumo: We conducted field, laboratory and modeling studies to evaluate the efficiency of a new solar disinfection (SODIS) device called Aqualuz for the removal of Escherichia coli (EC) from cistern water in the Brazilian semiarid, for different solar exposure–water temperature conditions. The results indicated EC contamination (100–300 MPN/100 mL) in all tests performed. As compared to the literature, lower exposure times (2.5–4.0 h) and solar radiations (250–410 W/m²) were sufficient for EC elimination. Then, assuming the complete-mix approach and first-order kinetics, it was possible to adjust EC decay rate constants (k) considering three different models: constant k-value, k as a function of water temperature and a new formulation for k as a function of both solar radiation and water temperature. All models performed well with normalized root mean squared logarithmic error (NRMSLE) lower than 20%, but the best fitting was obtained with the new approach. A new relationship between solar radiation and water temperature was also obtained, which allowed model simulations of EC decay for 34 municipalities in the Brazilian northeast, resulting in a color map for the region depicting the exposure periods of 1.8–5.6 h for reaching a 3-log reduction.
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spelling Aqualuz: a new solar disinfection device for treatment of cistern waterBacterial decayDrylandsEscherichia coliSolar water disinfectionWater qualityWe conducted field, laboratory and modeling studies to evaluate the efficiency of a new solar disinfection (SODIS) device called Aqualuz for the removal of Escherichia coli (EC) from cistern water in the Brazilian semiarid, for different solar exposure–water temperature conditions. The results indicated EC contamination (100–300 MPN/100 mL) in all tests performed. As compared to the literature, lower exposure times (2.5–4.0 h) and solar radiations (250–410 W/m²) were sufficient for EC elimination. Then, assuming the complete-mix approach and first-order kinetics, it was possible to adjust EC decay rate constants (k) considering three different models: constant k-value, k as a function of water temperature and a new formulation for k as a function of both solar radiation and water temperature. All models performed well with normalized root mean squared logarithmic error (NRMSLE) lower than 20%, but the best fitting was obtained with the new approach. A new relationship between solar radiation and water temperature was also obtained, which allowed model simulations of EC decay for 34 municipalities in the Brazilian northeast, resulting in a color map for the region depicting the exposure periods of 1.8–5.6 h for reaching a 3-log reduction.AQUA — Water Infrastructure, Ecosystems and Society2022-11-08T17:34:22Z2022-11-08T17:34:22Z2022info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfLIMA NETO, I. E. et al. Aqualuz: a new solar disinfection device for treatment of cistern water. AQUA — Water Infrastructure, Ecosystems and Society, [s.l.], v. 71, n. 6, p. 682-696, 2022. DOI: https://doi.org/10.2166/aqua.2022.0922709-8036http://www.repositorio.ufc.br/handle/riufc/69162Magalhães, Jefferson Hannover FaustinoBezerra, Letícia NunesSantos, Anna Luísa BeserraSilveira, Cleiton da SilvaNunes, Ana Bárbara de AraújoLima Neto, Iran Eduardoinfo:eu-repo/semantics/openAccessengreponame:Repositório Institucional da Universidade Federal do Ceará (UFC)instname:Universidade Federal do Ceará (UFC)instacron:UFC2023-12-06T17:51:02Zoai:repositorio.ufc.br:riufc/69162Repositório InstitucionalPUBhttp://www.repositorio.ufc.br/ri-oai/requestbu@ufc.br || repositorio@ufc.bropendoar:2024-09-11T18:25:11.879530Repositório Institucional da Universidade Federal do Ceará (UFC) - Universidade Federal do Ceará (UFC)false
dc.title.none.fl_str_mv Aqualuz: a new solar disinfection device for treatment of cistern water
title Aqualuz: a new solar disinfection device for treatment of cistern water
spellingShingle Aqualuz: a new solar disinfection device for treatment of cistern water
Magalhães, Jefferson Hannover Faustino
Bacterial decay
Drylands
Escherichia coli
Solar water disinfection
Water quality
title_short Aqualuz: a new solar disinfection device for treatment of cistern water
title_full Aqualuz: a new solar disinfection device for treatment of cistern water
title_fullStr Aqualuz: a new solar disinfection device for treatment of cistern water
title_full_unstemmed Aqualuz: a new solar disinfection device for treatment of cistern water
title_sort Aqualuz: a new solar disinfection device for treatment of cistern water
author Magalhães, Jefferson Hannover Faustino
author_facet Magalhães, Jefferson Hannover Faustino
Bezerra, Letícia Nunes
Santos, Anna Luísa Beserra
Silveira, Cleiton da Silva
Nunes, Ana Bárbara de Araújo
Lima Neto, Iran Eduardo
author_role author
author2 Bezerra, Letícia Nunes
Santos, Anna Luísa Beserra
Silveira, Cleiton da Silva
Nunes, Ana Bárbara de Araújo
Lima Neto, Iran Eduardo
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Magalhães, Jefferson Hannover Faustino
Bezerra, Letícia Nunes
Santos, Anna Luísa Beserra
Silveira, Cleiton da Silva
Nunes, Ana Bárbara de Araújo
Lima Neto, Iran Eduardo
dc.subject.por.fl_str_mv Bacterial decay
Drylands
Escherichia coli
Solar water disinfection
Water quality
topic Bacterial decay
Drylands
Escherichia coli
Solar water disinfection
Water quality
description We conducted field, laboratory and modeling studies to evaluate the efficiency of a new solar disinfection (SODIS) device called Aqualuz for the removal of Escherichia coli (EC) from cistern water in the Brazilian semiarid, for different solar exposure–water temperature conditions. The results indicated EC contamination (100–300 MPN/100 mL) in all tests performed. As compared to the literature, lower exposure times (2.5–4.0 h) and solar radiations (250–410 W/m²) were sufficient for EC elimination. Then, assuming the complete-mix approach and first-order kinetics, it was possible to adjust EC decay rate constants (k) considering three different models: constant k-value, k as a function of water temperature and a new formulation for k as a function of both solar radiation and water temperature. All models performed well with normalized root mean squared logarithmic error (NRMSLE) lower than 20%, but the best fitting was obtained with the new approach. A new relationship between solar radiation and water temperature was also obtained, which allowed model simulations of EC decay for 34 municipalities in the Brazilian northeast, resulting in a color map for the region depicting the exposure periods of 1.8–5.6 h for reaching a 3-log reduction.
publishDate 2022
dc.date.none.fl_str_mv 2022-11-08T17:34:22Z
2022-11-08T17:34:22Z
2022
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv LIMA NETO, I. E. et al. Aqualuz: a new solar disinfection device for treatment of cistern water. AQUA — Water Infrastructure, Ecosystems and Society, [s.l.], v. 71, n. 6, p. 682-696, 2022. DOI: https://doi.org/10.2166/aqua.2022.092
2709-8036
http://www.repositorio.ufc.br/handle/riufc/69162
identifier_str_mv LIMA NETO, I. E. et al. Aqualuz: a new solar disinfection device for treatment of cistern water. AQUA — Water Infrastructure, Ecosystems and Society, [s.l.], v. 71, n. 6, p. 682-696, 2022. DOI: https://doi.org/10.2166/aqua.2022.092
2709-8036
url http://www.repositorio.ufc.br/handle/riufc/69162
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv AQUA — Water Infrastructure, Ecosystems and Society
publisher.none.fl_str_mv AQUA — Water Infrastructure, Ecosystems and Society
dc.source.none.fl_str_mv reponame:Repositório Institucional da Universidade Federal do Ceará (UFC)
instname:Universidade Federal do Ceará (UFC)
instacron:UFC
instname_str Universidade Federal do Ceará (UFC)
instacron_str UFC
institution UFC
reponame_str Repositório Institucional da Universidade Federal do Ceará (UFC)
collection Repositório Institucional da Universidade Federal do Ceará (UFC)
repository.name.fl_str_mv Repositório Institucional da Universidade Federal do Ceará (UFC) - Universidade Federal do Ceará (UFC)
repository.mail.fl_str_mv bu@ufc.br || repositorio@ufc.br
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