𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Adsorption of aromatic compounds from the biodegradation of azo dyes on activated carbon

✍ Scribed by P.C.C. Faria; J.J.M. Órfão; J.L. Figueiredo; M.F.R. Pereira

Publisher
Elsevier Science
Year
2008
Tongue
English
Weight
469 KB
Volume
254
Category
Article
ISSN
0169-4332

No coin nor oath required. For personal study only.

✦ Synopsis

The adsorption of three selected aromatic compounds (aniline, sulfanilic acid and benzenesulfonic acid) on activated carbons with different surface chemical properties was investigated at different solution pH. A fairly basic commercial activated carbon was modified by means of chemical treatment with HNO 3 , yielding an acid activated carbon. The textural properties of this sample were not significantly changed after the oxidation treatment. Equilibrium isotherms of the selected compounds on the mentioned samples were obtained and the results were discussed in relation to their surface chemistry. The influence of electrostatic and dispersive interactions involved in the uptake of the compounds studied was evaluated. The Freundlich model was used to fit the experimental data. Higher uptakes are attained when the compounds are present in their molecular form. In general, adsorption was disfavoured by the introduction of oxygen-containing groups on the surface of the activated carbon.

📜 SIMILAR VOLUMES

Mechanism of Adsorption for Dyes on Acti
Mechanism of Adsorption for Dyes on Activated Carbon
✍ Minguang Dai 📂 Article 📅 1998 🏛 Elsevier Science 🌐 English ⚖ 108 KB

change with pH of the solution, we believe that the change The relationship between saturated adsorption amount ( A s ) and of z potential of the activated carbon with pH is the reason pH and the relationship between saturated adsorption amount for the effect of pH on the adsorption amounts. In orde

Adsorption kinetics of aromatic compound
Adsorption kinetics of aromatic compounds on carbon nanotubes and activated carbons
✍ Shujuan Zhang; Ting Shao; H. Selcen Kose; Tanju Karanfil 📂 Article 📅 2011 🏛 John Wiley and Sons 🌐 English ⚖ 308 KB 👁 1 views

## Abstract Adsorption kinetics of two organic compounds on four types of carbonaceous adsorbents (a granular activated carbon [HD4000], an activated carbon fiber [ACF10], a single‐walled carbon nanotube [SWNT], and a multiwalled carbon nanotube [MWNT]) was examined in aqueous solutions. The times

The Adsorption of Multinuclear Phenolic
The Adsorption of Multinuclear Phenolic Compounds on Activated Carbon
✍ T.R. Dargaville; F.N. Guerzoni; M.G. Looney; D.H. Solomon 📂 Article 📅 1996 🏛 Elsevier Science 🌐 English ⚖ 155 KB

densation of phenol (P) and formaldehyde (F) using P/F Pure compounds, whose structures model that of phenol-formalratios in excess of unity. Whereas commercial novolacs condehyde resins, were synthesized and their adsorption from ethanol tain a number of phenolic units (typically 8-13) with the sol

The Effect of Zeta Potential of Activate
The Effect of Zeta Potential of Activated Carbon on the Adsorption of Dyes from Aqueous Solution: I. The Adsorption of Cationic Dyes: Methyl Green and Methyl Violet
✍ Minguang Dai 📂 Article 📅 1994 🏛 Elsevier Science 🌐 English ⚖ 238 KB

The effect of the zeta \((\zeta)\) potential of activated carbon on the adsorption of cationic dyes from aqueous solution has been studied. The \(\mathrm{pH}_{\mathrm{zpc}}\) of the zero-point charge of activated carbon has been measured by microelectrophoresis. Plots of saturated amount adsorbed fo