Lead as a heavy metal from urban wastes of Maringá PR
Autor(a) principal: | |
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Data de Publicação: | 2008 |
Outros Autores: | , , |
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/2756 |
Resumo: | Human wastes are a permanent environmental challenge. Present research analyzed the amount of lead in the sewerage and sludge of the Sewerage Treatment Stations (STSs) of Maringá PR. Samples collection were undertaken at STSs. Sewerage samples were digested with nitric acid and reduction volume. Biosolid samples previously dried at constant weight were ground and digested by aqua regia. Metal concentrations were determined by atomic absorption spectrometry. The pH, nitrogen, carbon and organic matter (OM) were determined by the respective classical methods. Total average values were: a) Pb in affluent sewerage 0.089 and effluent sewerage 0.070 µg.mL-1. b) biosolid: Pb = 388.8 µg.g-1; pH = 3.38; N = 3.24 %; C = 24.5 % e OM = 42.1 %. Based on variance analysis of experimental values taking into account the variation sources of the stations (STSs) and collecting time, it has been reported that, at level of 1 % confidence, there were no significantly difference between the values of lead concentration, N (%), C (%) and organic matter (%) respectively in the two variation sources. Amounts of organic matter and C:N (carbon:nitrogen) ratio of sewage sludge are appropriated for soil application |
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Lead as a heavy metal from urban wastes of Maringá PRDestino do metal pesado chumbo de rejeitos urbanos de Maringá, Estado do Paranáesgotobiossólidometais pesadosnutrientespoluição ambientalmatéria orgânica1.06.00.00-0 QuímicaHuman wastes are a permanent environmental challenge. Present research analyzed the amount of lead in the sewerage and sludge of the Sewerage Treatment Stations (STSs) of Maringá PR. Samples collection were undertaken at STSs. Sewerage samples were digested with nitric acid and reduction volume. Biosolid samples previously dried at constant weight were ground and digested by aqua regia. Metal concentrations were determined by atomic absorption spectrometry. The pH, nitrogen, carbon and organic matter (OM) were determined by the respective classical methods. Total average values were: a) Pb in affluent sewerage 0.089 and effluent sewerage 0.070 µg.mL-1. b) biosolid: Pb = 388.8 µg.g-1; pH = 3.38; N = 3.24 %; C = 24.5 % e OM = 42.1 %. Based on variance analysis of experimental values taking into account the variation sources of the stations (STSs) and collecting time, it has been reported that, at level of 1 % confidence, there were no significantly difference between the values of lead concentration, N (%), C (%) and organic matter (%) respectively in the two variation sources. Amounts of organic matter and C:N (carbon:nitrogen) ratio of sewage sludge are appropriated for soil applicationOs resíduos da ação antrópica são um permanente desafio ambiental. Neste sentido, este trabalho teve como objetivo avaliar o metal pesado Pb no esgoto (afluente e efluente) e lodo das ETEs de Maringá, Estado do Paraná. As amostras de esgoto foram digeridas em meio ácido nítrico com redução de volume e as de biossólido foram digeridas com água régia. As leituras das concentrações de chumbo foram feitas pelo método de espectrometria de absorção atômica. O pH foi determinado e o N e o C foram analisados pelos respectivos métodos clássicos. Os resultados em valor médio global foram os seguintes, respectivamente: a) Pb, em µg.mL-1, para o esgoto afluente 0,089 e para o esgoto efluente 0,070. b) para o biossólido: Pb = 388,8 µg.g-1; pH = 3,38; N = 3,24%; C = 24,5% e MO = 42,1%. Pelos resultados conclui-se que o esgoto efluente está em conformidade com a legislação, e o lodo das ETEs: apresenta valores médios de pH; N, C e MO, que, em nível de 5% e 1%, não têm diferença significativa entre si, tanto nas ETEs (local) quanto ao período das coletas, respectivamente. Os resultados analíticos para o Pb dos biossólidos apresentaram diferença significativa. O teor de matéria orgânica e as relações C:N dos lodos das ETEs recomendam seu uso agrícolaUniversidade Estadual De Maringá2008-05-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/275610.4025/actascitechnol.v23i0.2756Acta Scientiarum. Technology; Vol 23 (2001); 1325-1334Acta Scientiarum. Technology; v. 23 (2001); 1325-13341806-25631807-8664reponame:Acta scientiarum. Technology (Online)instname:Universidade Estadual de Maringá (UEM)instacron:UEMporhttp://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/2756/1823Lenzi, ErvimGalli, DirseuRicardo de Melo, Sandra Adrianada Silva, Erika Vilhenainfo:eu-repo/semantics/openAccess2024-05-17T13:02:48Zoai:periodicos.uem.br/ojs:article/2756Revistahttps://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/indexPUBhttps://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/oai||actatech@uem.br1807-86641806-2563opendoar:2024-05-17T13:02:48Acta scientiarum. Technology (Online) - Universidade Estadual de Maringá (UEM)false |
dc.title.none.fl_str_mv |
Lead as a heavy metal from urban wastes of Maringá PR Destino do metal pesado chumbo de rejeitos urbanos de Maringá, Estado do Paraná |
title |
Lead as a heavy metal from urban wastes of Maringá PR |
spellingShingle |
Lead as a heavy metal from urban wastes of Maringá PR Lenzi, Ervim esgoto biossólido metais pesados nutrientes poluição ambiental matéria orgânica 1.06.00.00-0 Química |
title_short |
Lead as a heavy metal from urban wastes of Maringá PR |
title_full |
Lead as a heavy metal from urban wastes of Maringá PR |
title_fullStr |
Lead as a heavy metal from urban wastes of Maringá PR |
title_full_unstemmed |
Lead as a heavy metal from urban wastes of Maringá PR |
title_sort |
Lead as a heavy metal from urban wastes of Maringá PR |
author |
Lenzi, Ervim |
author_facet |
Lenzi, Ervim Galli, Dirseu Ricardo de Melo, Sandra Adriana da Silva, Erika Vilhena |
author_role |
author |
author2 |
Galli, Dirseu Ricardo de Melo, Sandra Adriana da Silva, Erika Vilhena |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Lenzi, Ervim Galli, Dirseu Ricardo de Melo, Sandra Adriana da Silva, Erika Vilhena |
dc.subject.por.fl_str_mv |
esgoto biossólido metais pesados nutrientes poluição ambiental matéria orgânica 1.06.00.00-0 Química |
topic |
esgoto biossólido metais pesados nutrientes poluição ambiental matéria orgânica 1.06.00.00-0 Química |
description |
Human wastes are a permanent environmental challenge. Present research analyzed the amount of lead in the sewerage and sludge of the Sewerage Treatment Stations (STSs) of Maringá PR. Samples collection were undertaken at STSs. Sewerage samples were digested with nitric acid and reduction volume. Biosolid samples previously dried at constant weight were ground and digested by aqua regia. Metal concentrations were determined by atomic absorption spectrometry. The pH, nitrogen, carbon and organic matter (OM) were determined by the respective classical methods. Total average values were: a) Pb in affluent sewerage 0.089 and effluent sewerage 0.070 µg.mL-1. b) biosolid: Pb = 388.8 µg.g-1; pH = 3.38; N = 3.24 %; C = 24.5 % e OM = 42.1 %. Based on variance analysis of experimental values taking into account the variation sources of the stations (STSs) and collecting time, it has been reported that, at level of 1 % confidence, there were no significantly difference between the values of lead concentration, N (%), C (%) and organic matter (%) respectively in the two variation sources. Amounts of organic matter and C:N (carbon:nitrogen) ratio of sewage sludge are appropriated for soil application |
publishDate |
2008 |
dc.date.none.fl_str_mv |
2008-05-05 |
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/2756 10.4025/actascitechnol.v23i0.2756 |
url |
http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/2756 |
identifier_str_mv |
10.4025/actascitechnol.v23i0.2756 |
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/2756/1823 |
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 23 (2001); 1325-1334 Acta Scientiarum. Technology; v. 23 (2001); 1325-1334 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_ |
1799315332471455744 |