Abstract:
The presence of emulsified oil in waste water of the edible fats industry can interfere with many tertiary or advanced waste water treatments such as adsorption, filtration, and various membrane techniques, and can cause severe problems in the step of biological treatment. The objective of the present work was to compare the performance of three destabilizers: chitosan, polyacrylamide, and aluminum sulfate to flocculate an O/W emulsion formulated with different emulsifiers (sodium dodecyl sulfate and sodium tetradecyl sulfate). Experiments were performed on a model system constituted by sunflower oil/water emulsions. Methods used were turbidimetry, colloidal titration, and microscopic observation. Results showed that the increase of surfactant chain length increases the destabilizer dose necessary to produce destabilization and reaching zero charge. In chitosan and polyacrylamide treatments, redispersion was observed for both sodium dodecyl sulfate and sodium tetradecyl sulfate emulsions. In the case of treatment with aluminum sulfate, turbidity values remained nearly constant, showing that redispersion does not take place in this case.
Registro:
Documento: |
Artículo
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Título: | Treatment of anionic emulsion systems using chitosan, polyacrylamide, and aluminum sulfate |
Autor: | Pinotti, A.; Bevilacqua, A.; Zaritzky, N. |
Filiación: | Ctro. Invest. y Desarrollo C., CONICET, Fac. de Ciencias Exactas, Buenos Aires, Argentina Depto. de Ing. Química, Fac. de Ingeniería, Universidad Nacional de La Plata, Buenos Aires, Argentina Ctro. Invest. y Desarrollo C., CONICET, Universidad Nacional de La Plata, 47 y 116, La Plata Buenos Aires, Argentina
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Palabras clave: | Aluminum sulfate; Chitosan; Emulsions; Flocculation; Polyacrylamide; aluminum sulfate; chitosan; dodecyl sulfate sodium; fat; oil; polyacrylamide; sunflower oil; surfactant; tetradecyl sulfate sodium; water; article; emulsion; microscopy; priority journal; titrimetry; turbidimetry |
Año: | 1999
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Volumen: | 21
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Número: | 5
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Página de inicio: | 354
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Página de fin: | 358
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Título revista: | Scanning
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Título revista abreviado: | Scanning
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ISSN: | 01610457
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CODEN: | SCNND
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CAS: | aluminum sulfate, 10043-01-3; chitosan, 9012-76-4; dodecyl sulfate sodium, 151-21-3; polyacrylamide, 9003-05-8; sunflower oil, 8001-21-6; tetradecyl sulfate sodium, 1191-50-0, 139-88-8, 4754-44-3; water, 7732-18-5
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Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01610457_v21_n5_p354_Pinotti |
Referencias:
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- Prabhu, P.V., Radhakrishnan, A.C., Iyer, T.S.G., Chitosan as a water clarifying agent (1976) Fish Technol, 13 (1), pp. 69-72
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Citas:
---------- APA ----------
Pinotti, A., Bevilacqua, A. & Zaritzky, N.
(1999)
. Treatment of anionic emulsion systems using chitosan, polyacrylamide, and aluminum sulfate. Scanning, 21(5), 354-358.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01610457_v21_n5_p354_Pinotti [ ]
---------- CHICAGO ----------
Pinotti, A., Bevilacqua, A., Zaritzky, N.
"Treatment of anionic emulsion systems using chitosan, polyacrylamide, and aluminum sulfate"
. Scanning 21, no. 5
(1999) : 354-358.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01610457_v21_n5_p354_Pinotti [ ]
---------- MLA ----------
Pinotti, A., Bevilacqua, A., Zaritzky, N.
"Treatment of anionic emulsion systems using chitosan, polyacrylamide, and aluminum sulfate"
. Scanning, vol. 21, no. 5, 1999, pp. 354-358.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01610457_v21_n5_p354_Pinotti [ ]
---------- VANCOUVER ----------
Pinotti, A., Bevilacqua, A., Zaritzky, N. Treatment of anionic emulsion systems using chitosan, polyacrylamide, and aluminum sulfate. Scanning. 1999;21(5):354-358.
Available from: https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01610457_v21_n5_p354_Pinotti [ ]