Detalhes bibliográficos
| Ano de defesa: |
2022 |
| Autor(a) principal: |
DINIZ, LETICIA
 |
| Orientador(a): |
Belli, Tiago José
|
| Banca de defesa: |
Não Informado pela instituição |
| Tipo de documento: |
Dissertação
|
| Tipo de acesso: |
Acesso aberto |
| Idioma: |
por |
| Instituição de defesa: |
Universidade Estadual do Centro-Oeste
|
| Programa de Pós-Graduação: |
Programa de Pós-Graduação em Engenharia Sanitária e Ambiental (Mestrado / Associação Ampla com UEPG)
|
| Departamento: |
Unicentro::Departamento de Ciências Agrárias e Ambientais
|
| País: |
Brasil
|
| Palavras-chave em Português: |
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| Palavras-chave em Inglês: |
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| Área do conhecimento CNPq: |
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| Link de acesso: |
http://tede.unicentro.br:8080/jspui/handle/jspui/2053
|
Resumo: |
The performance of an anoxic-oxic electro-membrane bioreactor (A/O-EMBR) on the treatment of an azo-dye containing wastewater was investigated. The A/O-EMBR was operated under three experimental conditions, in which different solids retention time (SRT) (45 and 20 d) and exposure mode to electric current (6´ON/30´OFF and 6´ON/12´OFF) were assessed. The reactor exhibited excellent performance on the decolorization process for all experimental conditions, with average dye removal efficiency ranging from 94.3 to 98.2%. Activity batch tests revealed that the dye removal rate (DRR) decreased from 16.8 to 10.2 mg L-1h -1 when the SRT was reduced from 45 to 20 d. When the exposure mode was 6´ON/12´OFF, a more substantial decrease of DRR to 1.5 mg L -1h -1 was noticed. By reducing the SRT to 20 d, a worse mixed liquor filterability condition was observed, with a membrane fouling rate (MFR) of 0.979 kPa d-1, while using the exposure mode of 6´ON/12´OFF the MFR obtained was 0.333 kPa d-1. A more attractive cost-benefit ratio in terms of dye removal was obtained by using the exposure mode of 6´ON/30´OFF, for which the energy demand was 92 – 99% lower than that observed for the mode of 6´ON/12´OFF. |
