Adsorption of disperse of yellow 42 onto bentonite and organo-modified bentonite by tetra butyl ammonium iodide (B-TBAI)

• Autorzy: Hashemian S. , Sadeghi B. , Mozafari F. , Salehifar H. , Salari K.
• Języki publikacji: EN

Abstrakty

EN

The kinetics and thermodynamics of adsorption of disperse yellow (DY42) by bentonite and organomodified-bentonite was studied. The organo-modified bentonite was synthesized by bentonite and tetra butyl ammonium iodide (B/TBAI). The B/TBAI was characterized by FT-IR, XRD, SEM, and elemental analysis. The adsorption experiments were carried out to investigate the factors that influence dye uptake by the adsorbents, such as the contact time under agitation, adsorbent dosage, initial dye concentration, and pH. The experimental results show that the percentage of dye removal increases with the increasing the amount of sorbent. Adsorption was pH-dependent. The equilibrium data were fitted to Langmuir and Freundlich isotherms and the equilibrium adsorption was best described by the Langmuir isotherm model. The experimental data fitted very well with the pseudo-first-order kinetic model. The thermodynamic study of the adsorption process showed that the adsorption of DY42 onto B-TBAI adsorbent was carried out spontaneously and the process was endothermic in nature.

Słowa kluczowe

EN

adsorption; disperse yellow 42; bentonite; organo-modified bentonite; tetrabutylammonium iodide; dye; environment; concentration

• Wydawca: -
• Czasopismo: Polish Journal of Environmental Studies
• Rocznik: 2013
• Tom: 22
• Numer: 5
• Opis fizyczny: p.1363-1370,fig.,ref.

Twórcy

autor

Hashemian S.

• Chemistry Department, Yazd Brunch, Islamic Azad University, Yazd, Iran

autor

Sadeghi B.

• Chemistry Department, Yazd Brunch, Islamic Azad University, Yazd, Iran

autor

Mozafari F.

• Chemistry Department, Yazd Brunch, Islamic Azad University, Yazd, Iran

autor

Salehifar H.

• Chemistry Department, Yazd Brunch, Islamic Azad University, Yazd, Iran

autor

Salari K.

• Chemistry Department, Yazd Brunch, Islamic Azad University, Yazd, Iran

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