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  • Removal of basic dyes from aqueous solutions by DIMETHYL TEREPHTHALATE (cas 120-61-6) distillation residue
  • Add time:08/29/2019         Source:sciencedirect.com

    In this study the removal of basic dyes from aqueous solutions by residue acid mixture (RAM) obtained from DIMETHYL TEREPHTHALATE (cas 120-61-6) distillation residue was investigated. Adsorption experiments were carried out at ambient temperature. A fixed amount of sample was immersed in 50 mL basic dye (500 mg/L) solutions. The amount of residual dye concentrations was determined using UV/Vis Spectrophotometer at wavelength 530 nm Safranine-T (ST), 622 nm Brilliant Cresyl Blue (BCB), 638 nm Nile Blue (NB) and 618 nm Brilliant Green (BG). Adsorption capacities of RAM for basic dyes decrease with the following order: BG > ST > NB > BCB. The maximum adsorption capacities for BG, NB, ST and BCB onto RAM were found to be 107, 22, 17, 13 mg/g, respectively. Adsorption kinetic data were tested using pseudo-first-order and pseudo-second-order models. The results show that the pseudo-second-order kinetic model fitted better than the data obtained from pseudo-first-order model for the adsorption of basic dyes onto RAM. Adsorption data were modeled using Langmuir and Freundlich adsorption isotherms. The result revealed that the adsorption of basic dyes onto RAM fit very well with the Langmuir isotherm model.

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    Prev:Separation Science and EngineeringSolid–liquid equilibrium of DIMETHYL TEREPHTHALATE (cas 120-61-6) (DMT), dimethyl isophthalate (DMI) and dimethyl phthalate (DMP) in melt crystallization process
    Next: On the loss of a methyl radical from metastable DIMETHYL TEREPHTHALATE (cas 120-61-6) molecular ions)

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