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Related to cationic dye: anionic dye
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Cationic dye, Union Green B, (Janus Green B, UGB) used in sorption studies, was purchased From Fluka.
Its adsorption capacity for the common water-soluble cationic dyes, methylene blue and malachite green, were studied.
Removal of cationic dyes from industrial effluents is still an important but challenging subject in the field of environmental remediation.
Two well-known applicable isotherm models, Freundlich (18) and Langmuir (19), were used to evaluate the adsorption capacities of beet pulp for both cationic dyes.