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Development of a method to measure TEP on fresh & saline water: Development of a method to measure transparent exopolymer particles (TEP): fresh and saline water applications - Tapa blanda

Duraisamy, Ramesh

 
9783846502693: Development of a method to measure TEP on fresh & saline water: Development of a method to measure transparent exopolymer particles (TEP): fresh and saline water applications
Tapa blanda
ISBN 10: 3846502693 ISBN 13: 9783846502693
Editorial: LAP LAMBERT Academic Publishing, 2011

Sinopsis

The ubiquitous presence of transparent exopolymer particles (TEP) in various water sources of membrane-based treatment plants and their ability to adhere to surfaces (high stickiness) and to initiate biofilm formation have led some experts to suggest that TEP may have a major role in organic and biological fouling of membrane systems. This paper aims discuss the latest knowledge on the possible link of TEP to membrane fouling, assess the currently available techniques to identify/measure TEP and how this can be applied in membrane fouling studies. Staining with Alcian blue is so far the most feasible way to assess TEP in water and in fouled membrane samples. Alcian blue was found to react specifically with acidic polysaccharides based on tests with model polysaccharides (neutral and anionic) and protein substances at pH 2.5. Under this condition, the relative concentration of TEP in water can be measured spectrophotometrically at 787 nm wavelength. The current TEP method is also an indirect measure of anion density of TEP, an indication of how surface-active and sticky these substances are; thus, a good indicator of their fouling potential in membrane systems.

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Reseña del editor

The ubiquitous presence of transparent exopolymer particles (TEP) in various water sources of membrane-based treatment plants and their ability to adhere to surfaces (high stickiness) and to initiate biofilm formation have led some experts to suggest that TEP may have a major role in organic and biological fouling of membrane systems. This paper aims discuss the latest knowledge on the possible link of TEP to membrane fouling, assess the currently available techniques to identify/measure TEP and how this can be applied in membrane fouling studies. Staining with Alcian blue is so far the most feasible way to assess TEP in water and in fouled membrane samples. Alcian blue was found to react specifically with acidic polysaccharides based on tests with model polysaccharides (neutral and anionic) and protein substances at pH 2.5. Under this condition, the relative concentration of TEP in water can be measured spectrophotometrically at 787 nm wavelength. The current TEP method is also an indirect measure of anion density of TEP, an indication of how surface-active and sticky these substances are; thus, a good indicator of their fouling potential in membrane systems.

Biografía del autor

Ramesh Duraisamy is Water Supply Engineer. In 2000 he has completed Bachelor of Civil Engineering from Annamalai University, India. He is working as a Water Supply consultant in India. 2008-2010 he has done MSc in Municipal Water Infrastructure-Water Supply Engineering (MWI-WSE) at UNESCO-IHE Institute for Water Education in Delft, The Netherlands.

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Editorial
LAP LAMBERT Academic Publishing
Año de publicación
2011
Idioma
Inglés
ISBN 10 
3846502693
ISBN 13 
9783846502693
Encuadernación
Tapa blanda
Número de páginas
112
Contacto del fabricante
no disponible
Persona responsable
no disponible