𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Adsorption of Reactive Red 120 from aqueous solutions by cetylpyridinium-bentonite

✍ Scribed by Ahmet Tabak; Nimet Baltas; Beytullah Afsin; Mustafa Emirik; Bulent Caglar; Erdal Eren

Publisher
Wiley (John Wiley & Sons)
Year
2010
Tongue
English
Weight
172 KB
Volume
85
Category
Article
ISSN
0268-2575

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

BACKGROUND: The removal of Reactive Red 120 (RR 120) from aqueous solutions using cetylpyridinium modified Resadiye bentonite (CP‐bentonite) prepared by ion exchange was investigated with particular reference to the effects of temperature, pH and ionic strength on adsorption.

RESULTS: Fourier transform infrared (FTIR) and thermal analysis (TG‐DTG/DTA) techniques revealed that the anionic dye (RR 120) molecules replaced partly cationic surfactant species on interacting with CP‐bentonite. The positive surface charge originating from the cationic surfactant species located on the external surface of the modified bentonite sample increased at low pH values. The significant amount of dye removal by CP‐bentonite at high pH values proved the importance of π and van der Waals interactions other than the electrostatic attraction in the duration of the adsorption process. The adsorption isotherms and the kinetic data were well described by the Langmuir and pseudo‐second‐order kinetic model, respectively. The Gibbs energy (ΔG), enthalpy (ΔH) and entropy (ΔS) changes in the temperature range 25–65 °C pointed out that the RR 120 uptake increased in parallel with the temperature.

CONCLUSION: This study showed that the structural arrangement of cetylpyridinium ions in the CP‐bentonite sample as well as the pH, temperature and ionic strength of the bulk solution influenced the adsorption of RR 120 dye from aqueous solutions by CP‐bentonite. Copyright © 2010 Society of Chemical Industry

📜 SIMILAR VOLUMES

Adsorption of reactive dyes from aqueous
Adsorption of reactive dyes from aqueous solutions by layered double hydroxides
✍ Despoina D. Asouhidou; Kostas S. Triantafyllidis; Nikolaos K. Lazaridis; Kostas 📂 Article 📅 2011 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 276 KB

## Abstract **BACKGROUND:** Water‐soluble reactive azo dyes are the most problematic dye house effluents, as they tend to pass through conventional treatment systems unaffected. The release of these compounds into the environment is undesirable and their removal becomes environmentally important. I

Adsorption behavior of reactive dyes fro
Adsorption behavior of reactive dyes from aqueous solutions on chitosan
✍ Ruey-Shin Juang; Ru-Ling Tseng; Feng-Chin Wu; Shwu-Hwa Lee 📂 Article 📅 1997 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 408 KB 👁 2 views

The capability of the use of chitosan for removing vinyl sulfone and chlorotriazine reactive dyes from aqueous solutions was examined, including equilibrium and dynamic studies. Experiments were performed as a function of dye concentration, and the amount and particle size of chitosan. It was shown

Thermodynamics of Fe(II) and Mn(II) adso
Thermodynamics of Fe(II) and Mn(II) adsorption onto bentonite from aqueous solutions
✍ Naseem Rauf; S.S. Tahir 📂 Article 📅 2000 🏛 Elsevier Science 🌐 English ⚖ 116 KB

The adsorption behaviour of Fe(II) and Mn(II) onto bentonite was studied as a function of temperature under optimized conditions of shaking time, amount of adsorbent, pH, and concentration of the adsorbate. Thermodynamic parameters such as H o and S o were calculated from the slope and intercept of

Adsorption of Hexavalent Chromium from A
Adsorption of Hexavalent Chromium from Aqueous Solution by Using Activated Red Mud
✍ Jyotsnamayee Pradhan; Surendra Nath Das; Ravindra Singh Thakur 📂 Article 📅 1999 🏛 Elsevier Science 🌐 English ⚖ 68 KB

Adsorption by activated red mud (ARM) is investigated as a possible alternative to the conventional methods of Cr(VI) removal from aqueous synthetic solutions and industrial effluents. Adsorption characteristics suggest the heterogenous nature of the adsorbent surface sites with respect to the energ

Adsorption of Phosphate from Aqueous Sol
Adsorption of Phosphate from Aqueous Solution Using Activated Red Mud
✍ Jyotsnamayee Pradhan; Jasobanta Das; Surendranath Das; Ravindra Singh Thakur 📂 Article 📅 1998 🏛 Elsevier Science 🌐 English ⚖ 84 KB

Adsorption of phosphate (PO3-4) from aqueous solution on activated red mud (ARM) was studied as a function of time, pH, temperature, concentration of adsorbent and adsorbate in acetic acid-sodium acetate buffer medium. The adsorption of phosphate follows Langmuir as well as Freundlich adsorption iso