Adsorption equilibrium data for substituted phenols on activated carbon

Shirgaonkar, Irfan Z.; Joglekar, H.S.; Mundale, Vishwas D.; Joshi, Jyeshtharaj B.

doi:10.1021/je00006a010

Cited by 27 publications

(18 citation statements)

References 4 publications

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“…For this reason, their undesirable appearance in different fluid streams is highly probable, being their separation/removal a necessary step of technical, environmental or economical concerns. There is a variety of works about aqueous-phase adsorption of PA, BA, and SA, onto adsorbent materials, as activated carbons, carbon cloths, and polymeric resins, among others (Oda et al 1981;Shirgaonkar et al 1992;Mazet et al 1994;Brasquet et al 1997;Koh and Nakajima 2000;Franz et al 2000;Ania et al 2002aAnia et al , 2002bTerzyk et al 2003;Otero et al 2005;Ayranci et al 2005;Ayranci and Duman 2006;Khenniche and Aissani 2009). …”

Section: Introductionmentioning

confidence: 99%

Adsorption of oxygen-containing aromatics used in petrochemical, pharmaceutical and food industries by means of lignin based active carbons

et al. 2011

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The adsorption processes of three aromatic chemicals onto activated carbons (ACs) from aqueous solutions have been studied. Eucalyptus kraft lignin obtained from cellulose industry as a residual biomass has been used to prepare activated carbons by physical activation with CO 2 . The influences of the activation time on the surface areas and pore volumes of the ACs were analyzed. The physicochemical properties and the surface chemical structure of the adsorbents have been studied by means of N 2 and CO 2 adsorption, ultimate analysis, XPS, TPD and SEM. XPS and TPD spectra of the ACs have suggested the presence of aromatic rings and carbon-oxygen functional groups in the solid surfaces. The potential use of the ACs for the removal of acetaminophen (paracetamol), salicylic acid and benzoic acid has been investigated at different pH, temperature and contact time. The adsorption equilibrium data have been correlated to Langmuir isotherm model. The thermodynamic study has been developed, the values of H , G, and S have been calculated and they indicated that the processes are endothermic for acetaminophen and exothermic for salicylic and benzoic acids. The analysis of the kinetic experiments showed that the effective diffusivities are low; 10 −12 to 10 −11 cm 2 /s, and they are the corresponding to intraparticle mass transfer, which appears as the controlling step for the net adsorption processes.

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Section: Introductionmentioning

confidence: 99%

Adsorption of oxygen-containing aromatics used in petrochemical, pharmaceutical and food industries by means of lignin based active carbons

et al. 2011

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“…For adsorbate and solvent the adsorption phenomenon depends on the differences between their chemical properties, structure and interactions (mutual and with solid surface). The adsorption of various series of different organic adsorbates was analyzed to find some correlations between the sorption experimental data and the properties of adsorbate and adsorbent [4,[10][11][12][13][14][15][16][17][18][19]. Many of benzene derivatives possess acidic or basic functional groups.…”

Section: Introductionmentioning

confidence: 99%

Effect of adsorbate structure on adsorption from solutions

Deryło–Marczewska

Marczewski

2002

Applied Surface Science

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Adsorption of benzene derivatives of various chemical properties from dilute aqueous solutions on the Norit activated carbons is investigated. The experimental systems are analyzed in terms of adsorption theory on energetically heterogeneous solids. The relations between the optimization isotherm parameters, i.e. equilibrium constants and heterogeneity parameters, and the solute properties, e.g. number, character and position of functional groups are discussed. #

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“…Equilibrium data fitted well into Langmuir equation expressed as : A glance at QO values show that adsorption capacity of phenols follow the trend P < DC < PMP < PNP < DCP. Monolayer capacity seems to increase with increasing molecuJar weight and decreasing solubility of the adsorbate in the solvent (7,8). The low adsorptive capacity for phenol may also be due to the formation of a strong hydrogen bond between the -OH group and water.…”

Section: Results and Discussion Single Solute Adsorption Systemmentioning

confidence: 99%

Influence of Physico-Chemical Characteristics of Adsorbent and Adsorbate on Competitive Adsorption Equilibrium and Kinetics

Bharat

Yenkie

Natarajan

1996

The Kluwer International Series in Engineering and Computer Science

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Adsorption on granular activated carbon (GAC) bas emCIged as the most efficient, broad spectrum and economical teclmology for scavenging the aqueous pollutants. In the present worlc adsoIption of some priority poDutants (lJ from their single and multisolute aqueous solutions onto various grades of granular activated carbons are studied and the effect of various physico-chemical parameters associated with both adsorbent and adsorbate on the adsorption rate and equilibria were investigated. Scanning electron micrographs show that GAC samples prepmd from different sources have significantly different pore structure and surface characteristics. More than 97010 of adsorbent surface is contnbuted by micropores [2].

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Adsorption equilibrium data for substituted phenols on activated carbon

Cited by 27 publications

References 4 publications

Adsorption of oxygen-containing aromatics used in petrochemical, pharmaceutical and food industries by means of lignin based active carbons

Adsorption of oxygen-containing aromatics used in petrochemical, pharmaceutical and food industries by means of lignin based active carbons

Effect of adsorbate structure on adsorption from solutions

Influence of Physico-Chemical Characteristics of Adsorbent and Adsorbate on Competitive Adsorption Equilibrium and Kinetics

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