Factorial analysis of the trihalomethanes formation in water disinfection using chlorine
Autor(a) principal: | |
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Data de Publicação: | 2006 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10314/3879 |
Resumo: | The factors that affect trihalomethane (THM) (chloroform, bromodichloromethane, chlorodibromomethane and bromoform) formation from the chlorination of aqueous solutions of hydrophobic fulvic acids (FA) were investigated in a prototype laboratorial simulation using factorial analysis. This strategy involved a fractional factorial design (16 plus 5 center experiments) of five factors (fulvic acids concentration, chlorine dose, temperature, pH and bromide concentration) and a Box Behnken design (12 plus 3 center experiments) for the detailed analysis of three factors (FA concentration, chlorine dose and temperature). The concentration ofTHMwas determined by headspace analysis by GC–ECD. The most significant factors that affect the four THM productions were the following: chloroform—FA concentration and temperature; bromodichloromethane—FA concentration and chlorine dose; chlorodibromomethane—chlorine dose; and, bromoform—chlorine dose and bromide concentration. Moreover, linear models were obtained for the four THM concentrations in the disinfection solution as function of the FA concentration, chlorine dose and temperature, and it was observed that the complexity of the models (number of significant factors and interactions) increased with increasing bromine atoms in the THM. Also, this study shows that reducing the FA concentration the relative amount of bromated THM increases. |
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Factorial analysis of the trihalomethanes formation in water disinfection using chlorineFactorial analysisResponse surface methodologyChlorine water disinfectionHydrophobic fulvic acidsTrihalomethanes formationThe factors that affect trihalomethane (THM) (chloroform, bromodichloromethane, chlorodibromomethane and bromoform) formation from the chlorination of aqueous solutions of hydrophobic fulvic acids (FA) were investigated in a prototype laboratorial simulation using factorial analysis. This strategy involved a fractional factorial design (16 plus 5 center experiments) of five factors (fulvic acids concentration, chlorine dose, temperature, pH and bromide concentration) and a Box Behnken design (12 plus 3 center experiments) for the detailed analysis of three factors (FA concentration, chlorine dose and temperature). The concentration ofTHMwas determined by headspace analysis by GC–ECD. The most significant factors that affect the four THM productions were the following: chloroform—FA concentration and temperature; bromodichloromethane—FA concentration and chlorine dose; chlorodibromomethane—chlorine dose; and, bromoform—chlorine dose and bromide concentration. Moreover, linear models were obtained for the four THM concentrations in the disinfection solution as function of the FA concentration, chlorine dose and temperature, and it was observed that the complexity of the models (number of significant factors and interactions) increased with increasing bromine atoms in the THM. Also, this study shows that reducing the FA concentration the relative amount of bromated THM increases.Analytica Chimica Acta2018-03-03T23:45:44Z2018-03-032006-12-23T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10314/3879http://hdl.handle.net/10314/3879engdoi:10.1016/j.aca.2006.12.031Rodrigues, Pedro M.S.M.Esteves da Silva, Joaquim C.G.Antunes, Maria Cristina G.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-01-14T02:57:36Zoai:bdigital.ipg.pt:10314/3879Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:43:04.604409Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Factorial analysis of the trihalomethanes formation in water disinfection using chlorine |
title |
Factorial analysis of the trihalomethanes formation in water disinfection using chlorine |
spellingShingle |
Factorial analysis of the trihalomethanes formation in water disinfection using chlorine Rodrigues, Pedro M.S.M. Factorial analysis Response surface methodology Chlorine water disinfection Hydrophobic fulvic acids Trihalomethanes formation |
title_short |
Factorial analysis of the trihalomethanes formation in water disinfection using chlorine |
title_full |
Factorial analysis of the trihalomethanes formation in water disinfection using chlorine |
title_fullStr |
Factorial analysis of the trihalomethanes formation in water disinfection using chlorine |
title_full_unstemmed |
Factorial analysis of the trihalomethanes formation in water disinfection using chlorine |
title_sort |
Factorial analysis of the trihalomethanes formation in water disinfection using chlorine |
author |
Rodrigues, Pedro M.S.M. |
author_facet |
Rodrigues, Pedro M.S.M. Esteves da Silva, Joaquim C.G. Antunes, Maria Cristina G. |
author_role |
author |
author2 |
Esteves da Silva, Joaquim C.G. Antunes, Maria Cristina G. |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Rodrigues, Pedro M.S.M. Esteves da Silva, Joaquim C.G. Antunes, Maria Cristina G. |
dc.subject.por.fl_str_mv |
Factorial analysis Response surface methodology Chlorine water disinfection Hydrophobic fulvic acids Trihalomethanes formation |
topic |
Factorial analysis Response surface methodology Chlorine water disinfection Hydrophobic fulvic acids Trihalomethanes formation |
description |
The factors that affect trihalomethane (THM) (chloroform, bromodichloromethane, chlorodibromomethane and bromoform) formation from the chlorination of aqueous solutions of hydrophobic fulvic acids (FA) were investigated in a prototype laboratorial simulation using factorial analysis. This strategy involved a fractional factorial design (16 plus 5 center experiments) of five factors (fulvic acids concentration, chlorine dose, temperature, pH and bromide concentration) and a Box Behnken design (12 plus 3 center experiments) for the detailed analysis of three factors (FA concentration, chlorine dose and temperature). The concentration ofTHMwas determined by headspace analysis by GC–ECD. The most significant factors that affect the four THM productions were the following: chloroform—FA concentration and temperature; bromodichloromethane—FA concentration and chlorine dose; chlorodibromomethane—chlorine dose; and, bromoform—chlorine dose and bromide concentration. Moreover, linear models were obtained for the four THM concentrations in the disinfection solution as function of the FA concentration, chlorine dose and temperature, and it was observed that the complexity of the models (number of significant factors and interactions) increased with increasing bromine atoms in the THM. Also, this study shows that reducing the FA concentration the relative amount of bromated THM increases. |
publishDate |
2006 |
dc.date.none.fl_str_mv |
2006-12-23T00:00:00Z 2018-03-03T23:45:44Z 2018-03-03 |
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 |
http://hdl.handle.net/10314/3879 http://hdl.handle.net/10314/3879 |
url |
http://hdl.handle.net/10314/3879 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
doi:10.1016/j.aca.2006.12.031 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Analytica Chimica Acta |
publisher.none.fl_str_mv |
Analytica Chimica Acta |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799136923712749568 |