Abstract
Natural cellulose and oxycellulose are heterogeneous highly hydrated substances. They have the same chemical composition, but different size of molecules and representation of COOH groups organized into complex supramolecular structure. The oxycellulosic adsorption capacity of organic cationic dyes increases with increasing -COOH group content and distinctly increases with other competitive ions in the aqueous solution.
Highlights
IntroductionBasic Dyes Basic dyes are cationic soluble salts of coloured bases
Followed by filtration of fiber suspension, more or less we will separate these colloidal particles according to their size, affinity for the emerging porosity fibrous bed and porosity influences of other particles that remain in the filtrate, and which we consider as not adsorbed. It is a complex process, where in addition to the sorption process underway and colloidal interactions influenced by dissolved oxycellulose particles, as already mentioned above
Due to the method of determining the concentration of the not sorbed dye in the supernatant based on its separation of the fiber suspension by filtration, the adsorption isotherm appears as if the surface adsorption proceeded by mechanism of flocculation
Summary
Basic Dyes Basic dyes are cationic soluble salts of coloured bases This is a class of synthetic dyes, that act as bases and when made soluble in water, they form a colored cationic salt, which can react with the anionic sites on the surface of the substrate. They are applied to substrate with anionic character where electrostatic attractions are formed. Basic dyes are called cationic dyes because the chromophore in basic dye molecules contains a positive charge They are salts, usually chlorides, in which the dyestuff is the basic or positive radical. Waste waters from industries like dye manufacturing, textile dyeing, paper and pupl mills, etc., contain appreciable amounts of basic dyes[3]
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