Год выпуска: 2011 Автор: Tariq Javed Издательство: LAP Lambert Academic Publishing Страниц: 300 ISBN: 9783845472331
Описание
The biosorption studies of Crystal Violet from aqueous solution have been carried out on Moringa Oleifera saw as a function of concentration, temperature, particle size, ionic strength and acids and bases. Moringa Oleifera saw was subjected to various treatments and the effect of pre-treatment and post-treatment have been studied in determining the biosorption strength, extent of biosorption, mode of sorption and Langmuir and Freundlich sorption parameters. Sorption of Crystal Violet as a function of initial concentration followed exclusively S-type isotherm. In other cases, H-type sorption profile has also been observed. The S-type is the representative of edgewise sticking of the adsorbed species giving the indication of no aggregate dye molecules on the surface. The H-type represents large size micelles formation with ‘flatwise’ sticking at the surface. The increase in biosorption with increasing temperatures indicates the exothermicity of the process which is further supported by...
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