| Registro completo |
| Provedor de dados: |
ArchiMer
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| País: |
France
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| Título: |
Processing fish press waters using metallic and ceramic filtration
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| Autores: |
Perez-galvez, Raul
Guadix, Emilia M.
Berge, Jean-pascal
Guadix, Antonio
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| Data: |
2013-10
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| Ano: |
2013
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| Palavras-chave: |
Membranes
Waste-water
Bioseparations
Filtration
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| Resumo: |
BACKGROUND The press juices resulting from a compacting operation on fish by-products were subjected to a depuration treatment in order to reduce the high COD (120 g O2 L–1). The process included an initial de-particulation step by means of two metallic filter cartridges of 465 µm and 250 µm, followed by concentration with a 200 nm ultrafiltration ceramic membrane. The polishing efficiency of each unit was assessed in terms of COD and protein removal. RESULTS Dead-end metallic filtration of the press waters reduced their suspended matter content by 28%, but achieved only 5.6% decrease in chemical oxygen demand (COD), which suggested further processing by membrane ultrafiltration. The de-particulated stream was then subjected to ultrafiltration for 8 h in batch concentration mode, attaining a COD reduction of 87%. The observed flux of permeate was successfully fitted to a cake-forming model adapted to cross-flow filtration. The permeability of the fouled membrane was completely restored (99.87%) by a cleaning treatment comprising an alkali step with NaOH and a final disinfection with NaOCl. CONCLUSIONS The treatment proposed has proved to be a feasible technology, able to render a final permeate with reduced organic load. © 2013 Society of Chemical Industry
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| Tipo: |
Text
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| Idioma: |
Inglês
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| Identificador: |
http://archimer.ifremer.fr/doc/00156/26701/24791.pdf
DOI:10.1002/jctb.4043
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| Editor: |
Wiley-blackwell
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| Relação: |
http://archimer.ifremer.fr/doc/00156/26701/
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| Formato: |
application/pdf
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| Fonte: |
Journal Of Chemical Technology And Biotechnology (0268-2575) (Wiley-blackwell), 2013-10 , Vol. 88 , N. 10 , P. 1885-1890
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| Direitos: |
2013 Society of Chemical Industry
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