Modelling the Adsorption of <i>p</i>-Nitrophenol by the Boyd Method in Conjunction with the Finite Element Method

Zamora, F.; Sabio, E.; Román, S.; González-Garcı́a, C.M.; Ledesma, B.

doi:10.1260/0263-6174.28.8-9.671

Cited by 4 publications

(3 citation statements)

References 33 publications

(17 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The DE values of PNP with the various solvents are ordered as follows: 3% urea (aq) < 3% NaOH (aq) < 3% NH 3 (aq) < EG < ACN <MeOH < Et 2 O < EtOH < n -BuOH < n -PrOH < GVL < HOAc < DMK < DMF < MEK < THF < DMSO. In nonaqueous solvents, Lewis base solvents exhibit better elution efficiency than acid and neutral solvents, while the hydrogen bonding interactions of alcohols and HOAc facilitate desorption. , …”

Section: Resultsmentioning

confidence: 99%

“…In nonaqueous solvents, Lewis base solvents exhibit better elution efficiency than acid and neutral solvents, while the hydrogen bonding interactions of alcohols and HOAc facilitate desorption. 27,45 Moreover, the DE values with several cosolvents were compared and are depicted in Figure 1. Except for 0.4% urea in HOAc, most cosolvents displayed higher DE values than the single solvents.…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

See 1 more Smart Citation

Feasibility and the Mechanism of Desorption of Phenolic Compounds from Activated Carbons

Manzoli

et al. 2020

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

The desorption efficiency (DE) of phenols, including pnitrophenol, p-chlorophenol, p-hydroxybenzoic acid, phenol, and hydroquinone, from activated carbons (ACs), has been investigated with a variety of solvents to gain insight into the feasibility and mechanism of phenols desorption. Ultrasound (US), microwaves (MW), and flow mode have been used to facilitate phenols desorption. It was found that the basicity, polarity, and hydrogen bonds of solvents synergistically affected phenols desorption. The preferred solvents (Lewis basic solvents, acetic acid, and alcohols) gave highly efficient elution. Increasing the alkaline or/and hydrogen bonding interactions, by adding ammonia or urea, enhanced desorption in most solvents. Moreover, although US and MW heating slightly improved desorption, complete desorption was easily achieved in a flow mode. It is demonstrated, herein, that phenols adsorption on the ACs is a reversible physical process, thus proving the feasibility of phenols desorption with proper solvents. Comparison of diffuse reflectance infrared Fourier transform (DRIFT) spectra and porosity property measurements of pristine, loaded, and eluted ACs confirmed our results. It can, therefore, be stated that our procedure can be used to dispose of secondary pollution while cutting post-treatment costs, thanks to the recovery of valuable compounds and AC recycling.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: ■ Experimental Sectionmentioning

confidence: 99%

Feasibility and the Mechanism of Desorption of Phenolic Compounds from Activated Carbons

Manzoli

et al. 2020

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

show abstract

“…For this reason, the 0D model should be used as a starting point for more in-depth analysis using models that consider spatial dimensions (nD models). Although the nD models are more complex than the 0D model, they allow for a deeper understanding of the physical processes taking place during the treatment of contaminated effluents [18,19].…”

Section: Introductionmentioning

confidence: 99%

Batch and Continuous Column Adsorption of p-Nitrophenol onto Activated Carbons with Different Particle Sizes

et al. 2023

Self Cite

View full text Add to dashboard Cite

The study focused on investigating the solvent adsorption of p-Nitrophenol (PNP) onto activated carbons for wastewater treatment. It explored the influence of adsorbate concentration and adsorbent size on equilibrium isotherms and removal rates to develop efficient adsorption processes. The study examined adsorption isotherms under equilibrium conditions utilizing both the Langmuir and Double-Langmuir models and the Dubinin–Radushkevich equation. Remarkably, all the models demonstrated equally excellent fitting to the experimental data. Kinetics of PNP adsorption were investigated using pseudo-first-order, pseudo-second-order, and intraparticle diffusion kinetic models. This provided insights into the dominant adsorption mechanism and mass transfer phenomena, aiding the design of efficient wastewater treatment processes. Strong correlations (correlation coefficients > 0.9) were found between the models and experimental data for three types of activated carbons under batch conditions. This validation enhances the reliability and applicability of the models, supporting their practical use. The study also observed a slight increase in maximum adsorption capacity (qmax) with decreasing particle size, although there is not a significant difference: 340, 350, and 365 mg·g−1, for CB-L, CB-M, and CB-S, respectively. This insight helps in selecting appropriate activated carbon for effective PNP removal, considering both adsorption capacity and particle size. Furthermore, the analysis of PNP adsorption under dynamic conditions in fixed-bed columns highlighted the significance of inlet velocity and carbon mass in determining breakthrough time, with particle size playing a secondary role. This information aids in optimizing the design and operation of fixed-bed adsorption systems for efficient PNP removal. In summary, this study’s significant contributions lie in enhancing our understanding of PNP adsorption in wastewater treatment. By investigating equilibrium isotherms, kinetics, and mass transfer phenomena, it provides validated models, insights into adsorption capacity and particle size, and practical guidance for dynamic adsorption systems. These findings contribute to the development of efficient and sustainable wastewater treatment methods.

show abstract

Determination of trace antibiotics in water and milk via preconcentration and cleanup using activated carbons

Liu

Boffa

et al. 2022

Food Chemistry

View full text Add to dashboard Cite

Modelling the Adsorption of p-Nitrophenol by the Boyd Method in Conjunction with the Finite Element Method

Cited by 4 publications

References 33 publications

Feasibility and the Mechanism of Desorption of Phenolic Compounds from Activated Carbons

Feasibility and the Mechanism of Desorption of Phenolic Compounds from Activated Carbons

Batch and Continuous Column Adsorption of p-Nitrophenol onto Activated Carbons with Different Particle Sizes

Determination of trace antibiotics in water and milk via preconcentration and cleanup using activated carbons

Contact Info

Product

Resources

About