ADSORPTION OF P-CRESOL BY DIFFERENT CARBON AT DIFFERENT PH ( FREUNDLICH-LANGMIURISOTHERM)

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NOURI S.

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Journal Paper

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Journal: AMIRKABIR Year:2003 | Volume:14 | Issue:53 Page(s): 12-19

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Title

ADSORPTION OF P-CRESOL BY DIFFERENT CARBON AT DIFFERENT PH ( FREUNDLICH-LANGMIURISOTHERM)

Author(s)

NOURI S. | Issue Writer Certificate

Keywords

EFLECTS OF PH

POINT OF ZERO CLTARGE (PZC)

ADSORPTION CAPACITY

ACTIVATED CARBON

LANGMUIR-FREUNDLICH

P-CRESOL

SPECTROPHOTOMETER.

Abstract

Adsorption of P-CRESOL by three different ACTIVATED CARBONs was carried out at 301 K and at controlled pH conditions. LANGMUIR-FREUNDLICH isotherm equations were studied and relative parameters were found. In acidic conditions that pH of solution is well below the pKa of P-CRESOL (in molecular form), it was observed that the adsorb ate solubility and the electron density of aromatic ring were the influencing factors on the extent of the adsorption by affecting the extent of London dispersion forces. It was found that the uptake of the molecular form of the aromatic solute was dependent on the PZC and surface area of the carbon. In higher solution pH conditions (in ionic form), the electrostatic forces played a significant role on the extent of adsorption. The effect of pH must be considered from its combined effects on the carbon surface and on the solute molecules. ADSORPTION CAPACITY (Qmax) and affinity (K) decrease with pH. Adsorption of the solute in higher pH values was found to be dependent on the concentration of anionic form of the solute. All isotherms were fitted in to LANGMUIR-FREUNDLICH isotherm equations to find the relative factors.

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APA: Copy

NOURI, S.. (2003). ADSORPTION OF P-CRESOL BY DIFFERENT CARBON AT DIFFERENT PH ( FREUNDLICH-LANGMIURISOTHERM). AMIRKABIR, 14(53), 12-19. SID. https://sid.ir/paper/531608/en

Vancouver: Copy

NOURI S.. ADSORPTION OF P-CRESOL BY DIFFERENT CARBON AT DIFFERENT PH ( FREUNDLICH-LANGMIURISOTHERM). AMIRKABIR[Internet]. 2003;14(53):12-19. Available from: https://sid.ir/paper/531608/en

IEEE: Copy

S. NOURI, “ADSORPTION OF P-CRESOL BY DIFFERENT CARBON AT DIFFERENT PH ( FREUNDLICH-LANGMIURISOTHERM),” AMIRKABIR, vol. 14, no. 53, pp. 12–19, 2003, [Online]. Available: https://sid.ir/paper/531608/en

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