Application of chemical precipitation, metallic exchange and Fenton’s reagent in photographic wastewaters treatment

Detalhes bibliográficos
Autor(a) principal: Rizk, Maria Crisitna
Data de Publicação: 2007
Outros Autores: Gimenes, Marcelino Luiz, Lenzi, Ervim
Tipo de documento: Artigo
Idioma: por
Título da fonte: Acta scientiarum. Technology (Online)
Texto Completo: http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/82
Resumo: Photographic, graphic and radiographic wastewaters contain, in its composition, silver and organic compounds that confer a high organic content. Those wastewaters are, commonly, treated for silver removal, but the organic matter also needs to be reduced, since the chemical oxygen demand (COD) is close to 120,000 mg O2 L-1.Therefore, the objective of this work is to study some processes capable of reducing the silver and COD photographic wastewaters concentrations. The precipitation with sodium sulfide (Na2S) and sodium chloride (NaCl), metallic replacement and advanced oxidation with Fenton’s reagent were studied The results showed that the Na2S precipitation and metallic replacement promoted the best silver removal, close to 100%, and the COD removal was around 10%. The experiments with NaCl did not promote satisfactory silver and COD removal and the Fenton’s reagent removed 40 and 70% of COD and silver concentrations, respectively.
id UEM-6_5b4a9f3b85ae73576b805ddd71e77793
oai_identifier_str oai:periodicos.uem.br/ojs:article/82
network_acronym_str UEM-6
network_name_str Acta scientiarum. Technology (Online)
repository_id_str
spelling Application of chemical precipitation, metallic exchange and Fenton’s reagent in photographic wastewaters treatmentAplicação de precipitação química, troca metálica e reagente Fenton no tratamento de efluentes fotográficos - DOI: 10.4025/actascitechnol.v29i1.82remoção de pratadegradação da matéria orgânicatratamento de efluentesprocessos químicosreagente FentonPhotographic, graphic and radiographic wastewaters contain, in its composition, silver and organic compounds that confer a high organic content. Those wastewaters are, commonly, treated for silver removal, but the organic matter also needs to be reduced, since the chemical oxygen demand (COD) is close to 120,000 mg O2 L-1.Therefore, the objective of this work is to study some processes capable of reducing the silver and COD photographic wastewaters concentrations. The precipitation with sodium sulfide (Na2S) and sodium chloride (NaCl), metallic replacement and advanced oxidation with Fenton’s reagent were studied The results showed that the Na2S precipitation and metallic replacement promoted the best silver removal, close to 100%, and the COD removal was around 10%. The experiments with NaCl did not promote satisfactory silver and COD removal and the Fenton’s reagent removed 40 and 70% of COD and silver concentrations, respectively.Efluentes fotográficos, gráficos e radiográficos apresentam, em sua composição, prata e compostos orgânicos que conferem elevada carga orgânica. Esses efluentes são, freqüentemente tratados com o objetivo de remoção da prata. Porém, a matéria orgânica também precisa ser reduzida, uma vez que a demanda química de oxigênio (DQO) é de aproximadamente 120.000 mg O2 L-1. Assim, o presente trabalho objetivou o estudo de processos capazes de reduzir as concentrações de prata e DQO de efluentes fotográficos. Foram estudados os processos de precipitação com sulfeto de sódio (Na2S) e cloreto de sódio (NaCl), troca metálica e oxidação avançada com reagente Fenton. Os resultados indicaram que os processos de precipitação com Na2S e troca metálica promoveram remoções de prata de aproximadamente 100% e de DQO em torno de 10%. Os testes com NaCl promoveram remoções pouco satisfatórias de prata e DQO e o reagente Fenton removeu 40 e 70% de DQO e prata, respectivamente.Universidade Estadual De Maringá2007-12-18info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/8210.4025/actascitechnol.v29i1.82Acta Scientiarum. Technology; Vol 29 No 1 (2007); 29-35Acta Scientiarum. Technology; v. 29 n. 1 (2007); 29-351806-25631807-8664reponame:Acta scientiarum. Technology (Online)instname:Universidade Estadual de Maringá (UEM)instacron:UEMporhttp://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/82/49Rizk, Maria CrisitnaGimenes, Marcelino LuizLenzi, Erviminfo:eu-repo/semantics/openAccess2024-05-17T13:02:25Zoai:periodicos.uem.br/ojs:article/82Revistahttps://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/indexPUBhttps://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/oai||actatech@uem.br1807-86641806-2563opendoar:2024-05-17T13:02:25Acta scientiarum. Technology (Online) - Universidade Estadual de Maringá (UEM)false
dc.title.none.fl_str_mv Application of chemical precipitation, metallic exchange and Fenton’s reagent in photographic wastewaters treatment
Aplicação de precipitação química, troca metálica e reagente Fenton no tratamento de efluentes fotográficos - DOI: 10.4025/actascitechnol.v29i1.82
title Application of chemical precipitation, metallic exchange and Fenton’s reagent in photographic wastewaters treatment
spellingShingle Application of chemical precipitation, metallic exchange and Fenton’s reagent in photographic wastewaters treatment
Rizk, Maria Crisitna
remoção de prata
degradação da matéria orgânica
tratamento de efluentes
processos químicos
reagente Fenton
title_short Application of chemical precipitation, metallic exchange and Fenton’s reagent in photographic wastewaters treatment
title_full Application of chemical precipitation, metallic exchange and Fenton’s reagent in photographic wastewaters treatment
title_fullStr Application of chemical precipitation, metallic exchange and Fenton’s reagent in photographic wastewaters treatment
title_full_unstemmed Application of chemical precipitation, metallic exchange and Fenton’s reagent in photographic wastewaters treatment
title_sort Application of chemical precipitation, metallic exchange and Fenton’s reagent in photographic wastewaters treatment
author Rizk, Maria Crisitna
author_facet Rizk, Maria Crisitna
Gimenes, Marcelino Luiz
Lenzi, Ervim
author_role author
author2 Gimenes, Marcelino Luiz
Lenzi, Ervim
author2_role author
author
dc.contributor.author.fl_str_mv Rizk, Maria Crisitna
Gimenes, Marcelino Luiz
Lenzi, Ervim
dc.subject.por.fl_str_mv remoção de prata
degradação da matéria orgânica
tratamento de efluentes
processos químicos
reagente Fenton
topic remoção de prata
degradação da matéria orgânica
tratamento de efluentes
processos químicos
reagente Fenton
description Photographic, graphic and radiographic wastewaters contain, in its composition, silver and organic compounds that confer a high organic content. Those wastewaters are, commonly, treated for silver removal, but the organic matter also needs to be reduced, since the chemical oxygen demand (COD) is close to 120,000 mg O2 L-1.Therefore, the objective of this work is to study some processes capable of reducing the silver and COD photographic wastewaters concentrations. The precipitation with sodium sulfide (Na2S) and sodium chloride (NaCl), metallic replacement and advanced oxidation with Fenton’s reagent were studied The results showed that the Na2S precipitation and metallic replacement promoted the best silver removal, close to 100%, and the COD removal was around 10%. The experiments with NaCl did not promote satisfactory silver and COD removal and the Fenton’s reagent removed 40 and 70% of COD and silver concentrations, respectively.
publishDate 2007
dc.date.none.fl_str_mv 2007-12-18
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/82
10.4025/actascitechnol.v29i1.82
url http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/82
identifier_str_mv 10.4025/actascitechnol.v29i1.82
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/82/49
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 Universidade Estadual De Maringá
publisher.none.fl_str_mv Universidade Estadual De Maringá
dc.source.none.fl_str_mv Acta Scientiarum. Technology; Vol 29 No 1 (2007); 29-35
Acta Scientiarum. Technology; v. 29 n. 1 (2007); 29-35
1806-2563
1807-8664
reponame:Acta scientiarum. Technology (Online)
instname:Universidade Estadual de Maringá (UEM)
instacron:UEM
instname_str Universidade Estadual de Maringá (UEM)
instacron_str UEM
institution UEM
reponame_str Acta scientiarum. Technology (Online)
collection Acta scientiarum. Technology (Online)
repository.name.fl_str_mv Acta scientiarum. Technology (Online) - Universidade Estadual de Maringá (UEM)
repository.mail.fl_str_mv ||actatech@uem.br
_version_ 1799315331409248256

Registros relacionados