Adsorption of phenol onto activated carbons having different textural and surface properties

Fierro, Vanessa; Torné-Fernández, V.; Montané, Daniel

doi:10.1016/j.micromeso.2007.08.002

Cited by 499 publications

(305 citation statements)

References 31 publications

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“…In this model, a pseudo second-order model for all the investigated materials can very satisfactorily approximate the sorption kinetics. Such a finding is also in good agreement with previous studies [87]. The last model employed was Intra-particle diffusion (IPD).…”

Section: Kinetic Analysis Of the Results Of The System Phenol'smofssupporting

confidence: 92%

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Design, synthesis and characterization of MOF-199 and ZIF-8: Applications in the adsorption of phenols derivatives in aqueous solution

Giraldo¹,

Bastidas-Barranco²,

Húmpola³

et al. 2017

Eur. J. Chem.

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In this work, the adsorption characteristics of metal-organic frameworks (MOFs: and ZIF-8) with two different types of structure were analyzed. MOF-199 consists of copperbased metal clusters while the ZIF-8 consists of organic molecules interlaced with zinc atoms and these have octahedral morphology and typical rhombic dodecahedron shape, respectively. The results of phenol (Ph) and p-nitro phenol (PNP) adsorption capacity from aqueous solution show that MOF-199 has a higher adsorption capacity: Ph 79.55% and PNP 89.3%, while for ZIF-8 the adsorption capacity was Ph 65.5% and PNP 77.0%. Adsorption of phenols was fit to Langmuir, Sips and Redlich-Peterson models and kinetics by pseudosecond order. Gibbs free energy (ΔG°) shows that adsorption processes studied are spontaneous.

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Section: Kinetic Analysis Of the Results Of The System Phenol'smofssupporting

confidence: 92%

“…If the so-called Weber-Morris [87] plot of qt versus t 1/2 gives a straight line, then the sorption process is controlled by intra-particle diffusion only. However, if the data exhibit multi-linear plots, then two or more steps influence the sorption process.…”

Section: Kinetic Analysis Of the Results Of The System Phenol'smofsmentioning

confidence: 99%

Design, synthesis and characterization of MOF-199 and ZIF-8: Applications in the adsorption of phenols derivatives in aqueous solution

Giraldo¹,

Bastidas-Barranco²,

Húmpola³

et al. 2017

Eur. J. Chem.

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“…Additionally it is a well-known compound that serves as a model molecule used for characterization of adsorptive properties of different materials. Hence there is lot of papers that deal with phenols (Ps) adsorption however only few of them give an answer where the adsorption capacity come from (Mattson et al 1969;Moreno-Castilla et al1995;Radovic et al1997;Hsieh and Teng 2000;Salame and Bandosz 2003;Terzyk 2003;Fierro et al 2008;Liu et al 2010). Generally three mechanisms of phenolic compounds adsorption are considered: the p-p dispersion interaction, the electron-donor-acceptor complex formation and the hydrogen-bond formation (Mattson et al 1969;Terzyk 2003;Dąbrowski et al 2005).…”

Section: Introductionmentioning

confidence: 99%

Effect of micropore size distribution on phenol adsorption on steam activated carbons

Lorenc-Grabowska

2015

Adsorption

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The adsorption of phenol on microporous activated carbons (ACs) produced in laboratory from polyethyleneterephtalate (PET), furfuryl alcohol (PFA), polyacrylonitrile (PAN) and anthracene oil pitch (ASN) have been studied. The ACs have been obtained by carbonization and subsequent steam activation at 850°C to 50 % burn off. For comparison, commercial activated carbons from coconut shell, and CWZ 22 carbon have been applied. All studied ACs are predominantly microporous and have neutral or basic surface characteristics. The pseudo second kinetic model and Langmuir equation were found to fit the experimental data very well. A very good correlation between the volume of pores with a width smaller than 1.4 nm (V 1.4 ) and the volume of phenol calculated from Langmuir monolayer capacity (q m ) was found. Based on that, it can be concluded that the phenol adsorption is governed mainly by micropore filling through the p-p dispersion interaction in micropores smaller than double molecular diameter of phenol.

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“…On the other hand, adsorption of chemical contaminates through the use of solid materials such as activated carbon powders is another technique that already applied commercially in many industrial fields. In certain applications (removal of MTBE for example), the main concerns of using such technique for highly purified water resulted high process costs [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Trio Effects Portable Water Treatment System

2015

IJEE

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A B S T R A C TThe main motivation of the present work is the efficiency and the high cost of the three major water treatment techniques used in many industrial applications (oxidation, adsorption and air stripping). The present work introduced a novel and combined technique that merges between the three major water treatment techniques, namely: stripping, oxidation and adsorption that are suitable for domestic and rural areas use. The effectiveness of the present technique was experimentally tested with one of the chemical contaminants namely Methyl Tert-Butyl Ether (MTBE). The experiments were conducted at different air flow rates 7, 8 and 10 (L/min), with difference residence time (2-20 min) at a different molar ratio of MTBE to hydrogen peroxide i.e. 1:10, 1:15 and 1:20. The results indicated that the optimum molar ratio between MTBE and hydrogen peroxide was 1:20 with air flow rate of 7 L/min, having the best performance (90%) to remove MTBE from the synthetic wastewater. From this research it can be concluded that, the overall design achieved the objectives. The combined system effectively removed MTBE from wastewater. The combined process should be able to solve the environmental problems and reduce pollutants in wastewater contained MTBE, before it is released to natural water sources.

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Adsorption of phenol onto activated carbons having different textural and surface properties

Cited by 499 publications

References 31 publications

Design, synthesis and characterization of MOF-199 and ZIF-8: Applications in the adsorption of phenols derivatives in aqueous solution

Design, synthesis and characterization of MOF-199 and ZIF-8: Applications in the adsorption of phenols derivatives in aqueous solution

Effect of micropore size distribution on phenol adsorption on steam activated carbons

Trio Effects Portable Water Treatment System

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