Adsorption Behavior and Mechanism of Oxytetracycline on Rice Husk Ash: Kinetics, Equilibrium, and Thermodynamics of the Process

Díaz, Christhel Andrade; Zambrano-Intriago, Luis Ángel; Oliveira, Nelson S.; Vieira, Judite S.; Quiroz-Fernández, Luis Santiago; Rodríguez-Díaz, Joan Manuel

doi:10.1007/s11270-020-04473-6

Cited by 52 publications

(8 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In numerical terms, 0.2 g/100 mL would indicate that this is the appropriate dose since it represents the highest adsorption capacity among the doses used. However, this represents an error of analysis due to the fact that Equation (1) contains w as the denominator, and when values < 1 are applied, the results will be higher [16]. This behavior can be corroborated by analyzing the R(%) curve, where it is clearly shown that the removal of Pb(II) is directly proportional to the increase in the dose used.…”

Section: Adsorbent Dosementioning

confidence: 94%

See 1 more Smart Citation

Novel Application of Tagua Shell (Phytelephas aequatorialis) as Adsorbent Material for the Removal of Pb(II) Ions: Kinetics, Equilibrium, and Thermodynamics of the Process

et al. 2022

Self Cite

View full text Add to dashboard Cite

Tagua shell is a material generated in the handcrafted jewelry industry, which is discarded since it does not have a specific use. The present study evaluates this material as an adsorbent for the removal of lead (II) in aqueous media. The adsorbent was characterized through the point of zero charge technique, X-ray microanalysis, scanning electron microscopy, and Fourier-transform infrared spectroscopy. Tests were carried out in a static system using a lead (II) solution of 100 mg·L−1 to establish the process conditions, setting a pH of 5, an adsorbent dose of 1.8 g/100 mL, and a contact time of 60 min. The kinetic study performed showed that the experimental data had a better fit with the pseudo-second order model. The experimental equilibrium data were correlated using the Langmuir, Freundlich, Toth, Redlich–Peterson, and Sips models, of which the Langmuir and Sips models proved to be the best to represent the adsorption process due to the high coefficient of determination they presented at the different temperatures, being between 0.9629–0.9899 and 0.9819–0.9900, respectively. The maximum amount of lead adsorbed was 22.0348 mg·g−1 at a temperature of 298 K. Finally, the thermodynamics study indicated that the process is endothermic, spontaneous, and thermodynamically stable.

show abstract

Section: Adsorbent Dosementioning

confidence: 94%

“…All experiments were performed by stirring 100 mL of Pb(II) solution at the required concentration with a dose of TSH in a 250 mL Erlenmeyer flask with stirring at a constant speed of 300 rpm. This shaking speed of 300 rpm was decided based on preliminary tests and published literature [15][16][17].…”

Section: Experimental Conditions Of the Adsorption Processmentioning

confidence: 99%

Novel Application of Tagua Shell (Phytelephas aequatorialis) as Adsorbent Material for the Removal of Pb(II) Ions: Kinetics, Equilibrium, and Thermodynamics of the Process

et al. 2022

Self Cite

View full text Add to dashboard Cite

show abstract

“…The second linear range shows a gradual adsorption process controlled by intraparticle diffusion, which is related to pore diffusion and features faster transfer to phenol. 48−50 The third linear range is the final equilibrium phase, in which intraparticle diffusion begins to stabilize, probably due to the low solute concentration in the solution, which is related to surface diffusion according to Abdelwahab and Amin 51 and Andrade et al 52 The increase in the constant C values from 0.339 to 13.544 mg•L −1 for phenol and from 0.455 to 38.093 mg•L −1 for Cd 2+ demonstrates the increase in the boundary layer in the region and consequently greater diffusion resistance. In addition, the increase in the constant C may indicate an According to Figure 4, the Langmuir and Langmuir− Freundlich models overlap for Cd 2+ and phenol.…”

Section: Biochar Characterizationmentioning

confidence: 99%

Modeling Mono- and Multicomponent Adsorption of Phenol and Cadmium from Aqueous Solution by Peanut Shell Biochar

Gama

Sales

Nascimento

et al. 2022

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

In this work, the competitive adsorption of phenol and cadmium using the biochar of peanut shell (BPS) as an adsorbent was evaluated. The biochar was characterized as mesoporous and amorphous, with carbonyl and carboxyl groups, and pHPZC 7.9. The system reached equilibrium in around 180 min. For the single-component equilibrium, the Langmuir–Freundlich model was the one that best represented the data with a maximum adsorption capacity of 16.32 mg·g–1 for phenol and 34.73 mg·g–1 for cadmium. For the binary mixture, the extended Freundlich and modified Redlich–Peterson models were the ones that presented the best adjustments, indicating the heterogeneity of the adsorption process. The results demonstrated the synergy of Cd2+ ions in phenol adsorption. The biochar presented potential for the removal of organic and inorganic substances simultaneously. The adsorption mechanism showed a limiting step on the surface of the BPS and greater access of Cd2+ to the adsorptive pores.

show abstract

“…Due to its noble physical and chemical characteristics, many researchers have used RHA for the removal of various pharmaceutical compounds. Earlier, ofloxacin hydrochloride, paracetamol (Thakur et al 2020), ofloxacin (Kaur et al 2021a), oxytetracycline (Andrade et al 2020), and pyridine (Lataye et al 2008) were adsorbed on RHA with high removal capacity.…”

Section: Introductionmentioning

confidence: 99%

Removal of doxycycline hydrochloride from aqueous solution by rice husk ash using response surface methodology and disposability study

Kaur

Singh

Rajor

et al. 2022

Environ Sci Pollut Res

View full text Add to dashboard Cite

The huge demand and consumption of DOX, its incomplete metabolism, and complex behavior in atmosphere are causing a great ecological issue, which needs to be solved. In the present study, the suitability of rice husk ash (RHA) for the greater sorption efficiency of DOX antibiotic was investigated. Furthermore, disposability study of exhausted RHA was performed using solidification technique and leachate had undergone toxicity test to evaluate the DOX encapsulation ability. The central composite design under RSM was employed for the design of experiment and optimization of adsorption parameters. RHA was characterized using various techniques such as XRD, SEM (EDX), FTIR, BET, and zeta potential analysis. The influence of various adsorption parameters, like initial DOX concentration (C 0 ), RHA dosage (m), incubation-time period (t), and pH were examined on the performance in terms of DOX elimination % (X 1 ) and adsorptive capacity (mg/g) (X 2 ). At optimized conditions, the obtained X 1 and X 2 were 98.85% and 17.74 mg/g, respectively. Moreover, the kinetics data suited well to the pseudo-second-order model. Freundlich, Langmuir, and Redlich-Peterson (R-P) isotherm models were applied, out of which Langmuir model best performed under optimized conditions; m = 5 g/L, t = 85.85 min, DOX concentration = 89.73 mg/L, and pH = 6. The bacterial toxicity test of leachate confirmed complete encapsulation of DOX by solidification technique.

show abstract

Adsorption Behavior and Mechanism of Oxytetracycline on Rice Husk Ash: Kinetics, Equilibrium, and Thermodynamics of the Process

Cited by 52 publications

References 32 publications

Novel Application of Tagua Shell (Phytelephas aequatorialis) as Adsorbent Material for the Removal of Pb(II) Ions: Kinetics, Equilibrium, and Thermodynamics of the Process

Novel Application of Tagua Shell (Phytelephas aequatorialis) as Adsorbent Material for the Removal of Pb(II) Ions: Kinetics, Equilibrium, and Thermodynamics of the Process

Modeling Mono- and Multicomponent Adsorption of Phenol and Cadmium from Aqueous Solution by Peanut Shell Biochar

Removal of doxycycline hydrochloride from aqueous solution by rice husk ash using response surface methodology and disposability study

Contact Info

Product

Resources

About