Aqualuz: a new solar disinfection device for treatment of cistern water
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , , |
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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Repositório Institucional da Universidade Federal do Ceará (UFC) |
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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 |
_version_ |
1813028795732459520 |