Adsorption kinetics of phenol from water on Fe/AC

Li, Bingzheng; Sun, Kangqing; Guo, Yabing; Tian, Jinping; Xue, Yunpeng; Sun, Duixiong

doi:10.1016/j.fuel.2012.10.043

Cited by 23 publications

(3 citation statements)

References 33 publications

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“…The experimental data were fitted (using the pseudo-first-order model (PFO model) (equation 4) and the pseudo-second-order model (PSO model) (equation ( 5 where Q e is the equilibrium adsorption capacity (mg g -1 ), K f (h -1 ) and K s (g mg -1 h -1 ) are the PFO model and PSO model rate constants, respectively. The PSO model predicts the behaviour over the entire range of the adsorption process and is in agreement with a rate controlling step in the adsorption mechanism (Hameed and Rahman, 2008;Li et al, 2013). The PFO model is generally only applicable over the initial state of adsorption (Hameed and Rahman, 2008;Li et al, 2013).…”

Section: Effect Of Contact Timementioning

confidence: 52%

“…The PSO model predicts the behaviour over the entire range of the adsorption process and is in agreement with a rate controlling step in the adsorption mechanism (Hameed and Rahman, 2008;Li et al, 2013). The PFO model is generally only applicable over the initial state of adsorption (Hameed and Rahman, 2008;Li et al, 2013). Table 5 lists the results of the kinetic constants of the models.…”

Section: Effect Of Contact Timementioning

confidence: 60%

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Activated carbon from pyrolysis of brewer’s spent grain: Production and adsorption properties

et al. 2014

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Brewer's spent grain is a low cost residue generated by the brewing industry. Its chemical composition (high nitrogen content 4.35 wt.%, fibres, etc.) makes it very useful for the production of added value in situ nitrogenised activated carbon. The composition of brewer's spent grain revealed high amounts of cellulose (20.8 wt.%), hemicellulose (48.78 wt.%) and lignin (11.3 wt.%). The fat, ethanol extractives and ash accounted for 8.17 wt.%, 4.7 wt.% and 3.2 wt.%, respectively. Different activated carbons were produced in a lab-scale pyrolysis/activation reactor by applying several heat and steam activation profiles on brewer's spent grain. Activated carbon yields from 16.1 to 23.6 wt.% with high N-contents (> 2 wt.%) were obtained. The efficiency of the prepared activated carbons for phenol adsorption was studied as a function of different parameters: pH, contact time and carbon dosage relative to two commercial activated carbons. The equilibrium isotherms were described by the non-linear Langmuir and Freundlich models, and the kinetic results were fitted using the pseudo-first-order model and the pseudo-second-order model. The feasibility of an activated carbon production facility (onsite and offsite) that processes brewer's spent grain for different input feeds is evaluated based on a techno-economic model for estimating the net present value. Even though the model assumptions start from a rather pessimistic scenario, encouraging results for a profitable production of activated carbon using brewer's spent grain are obtained.

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Section: Effect Of Contact Timementioning

confidence: 52%

Section: Effect Of Contact Timementioning

confidence: 60%

Activated carbon from pyrolysis of brewer’s spent grain: Production and adsorption properties

et al. 2014

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“…At present, well-established techniques for the removal of phenol and phenolic derivatives include adsorption, coagulation, electrochemical, extraction, biological treatment, enzyme oxidation, and supercritical water oxidation. However, these methods cannot degrade them completely and even generate secondary pollution [8][9][10][11]. Compared to the techniques mentioned above, the method of photocatalysis is low-cost, highly efficient, and non-toxic; it is a novel strategy for the degradation of phenol and phenolic derivatives, as it can lead to fast and complete mineralisation of organic pollutants, without leaving harmful intermediates [12][13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Graphene Oxide Hybridised TiO2 for Visible Light Photocatalytic Degradation of Phenol

Wang

Guo

et al. 2020

Symmetry

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In industrial pollutants, phenol is a kind of degradation-resistant hazardous compound. It is generated during industrial processes in factories and treatment at sewage plants. In this study, we analyse the photocatalytic activity of TiO2 and rGO as a composite for the degradation of phenol. Hybridised titanium dioxide/reduced graphene oxide (TiO2/rGO) nanocomposites were synthesised by a simple hydrothermal method using flake graphite and tetrabutyl titanate as raw materials. Scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), Brunauer–Emmet–Teller (BET) specific area analysis, Fourier transform infrared spectroscopy (FTIR), Raman, X-ray photoelectron spectroscopy (XPS), photoelectrochemical analysis, and UV–vis diffuse reflectance spectra (DRS) were employed to characterise the physicochemical properties of the as-prepared nanocomposites. The results showed the TiO2/rGO nanocomposites’ significant anatase phase and a small fraction of the rutile phase the same as that of the as-prepared TiO2 nanoparticles. The spherical TiO2 nanoparticles (diameter 20–50 nm) were agglomerated slightly and the agglomerates were anchored on the rGO sheets and dispersed symmetrically. The specific surface area of TiO2/rGO-4% nanocomposites was 156.4 m2/g, revealing a high specific surface area. Oxygen-containing functional groups that existed in TiO2/rGO-4% nanocomposites were almost removed during hydrothermal processing. The photocurrent response of TiO2/rGO-4% was strongest among the TiO2/rGO nanocomposites, and the bandgap of TiO2/rGO-4% was 2.91 eV, showing a redshift of absorption into the visible region, which was in favour of the high photocatalytic activity of TiO2/rGO nanocomposites under visible light (λ > 420 nm). Moreover, the samples were employed to photodegrade phenol solution under visible light irradiation. TiO2/rGO-4% nanocomposite degraded the phenol solution up to 97.9%, and its degradation rate constant was 0.0190 h−1, which had higher degradation activity than that of other TiO2/rGO nanocomposites. This is a promising candidate catalyst material for organic wastewater treatment.

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A Bi-functional Cobalt and Nitrogen Co-doped Carbon Catalyst for Aerobic Oxidative Esterification of Benzyl Alcohol with Methanol and Oxygen Reduction Reaction

Long

Chen

et al. 2019

Catal Lett

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Adsorption kinetics of phenol from water on Fe/AC

Cited by 23 publications

References 33 publications

Activated carbon from pyrolysis of brewer’s spent grain: Production and adsorption properties

Activated carbon from pyrolysis of brewer’s spent grain: Production and adsorption properties

Graphene Oxide Hybridised TiO2 for Visible Light Photocatalytic Degradation of Phenol

A Bi-functional Cobalt and Nitrogen Co-doped Carbon Catalyst for Aerobic Oxidative Esterification of Benzyl Alcohol with Methanol and Oxygen Reduction Reaction

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