Utilize este identificador para referenciar este registo:
http://hdl.handle.net/10400.6/635
Título: | Integrated Nanofiltration and Upflow Anaerobic Sludge Blanket Treatment of Textile Wastewater for In-Plant Reuse |
Autor: | Gomes, Arlindo Caniço Gonçalves, Isolina Cabral Porter, John Jefferson Pinho, Maria Norberta de |
Palavras-chave: | Nanofiltration Upflow anaerobic sludge blanket Decoloration Azo dye Sulfide |
Data: | 2007 |
Resumo: | The filtration characteristics of simulated dyeing effluents containing Acid Orange 7, sodium sulfate, and a pH buffer made of acetic acid and sodium acetate is described using a commercially available nanofiltration membrane. The original membrane filtration properties were characterized with deionized water to provide a baseline of membrane performance. At high volumetric concentration of the test solutions, greater than 98% rejection of dye and sodium sulfate were obtained. Rejection of buffering chemicals was approximately 50% in all experiments, giving a permeate water not suitable for reuse in most dyeing operations. The final composite concentrate had a chemical oxygen demand (COD) value .2000 mg/L. No problems were encountered with anaerobic treatment of the concentrate obtained from the dyeing wastewater. Adjusting the sulfate concentration to give COD-to-sulfate ratios to 2.9, 5.4, and 18.2 in the reactor feed had no significant alterations in the performance of the upflow anaerobic sludge blanket reactor. |
URI: | http://hdl.handle.net/10400.6/635 |
Aparece nas colecções: | ICI - FibEnTech | Documentos por Auto-Depósito |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Artigo_4.pdf | 176,52 kB | Adobe PDF | Ver/Abrir |
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