Application of isotherms models and error functions in activated carbon CO2 sorption processes

Serafin, Jarosław; Dziejarski, Bartosz

doi:10.1016/j.micromeso.2023.112513

Cited by 55 publications

(16 citation statements)

References 75 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…After finding the parameters of each adsorption isotherm, three more error functions were calculated as simultaneous tools to be used when deciding upon the best model: (1) RMSD function (root mean squared deviations), see Equation (9), (2) HYBRID function (hybrid fractional error deviation), see Equation (10) in which p is the number of parameters of the model [ 42 , 50 ], and (3) R 2 adjusted , see Equation (6).

…”

Section: Resultsmentioning

confidence: 99%

“…Table 4 lists the calculus results for the eight isotherms taken into consideration: the value of their parameters as well as of the three above-mentioned error functions. The footnotes indicate the units of the parameters for each isotherm [ 49 , 50 ]. A good quality fit simultaneously satisfies the following requests: R 2 adjusted as close to 1 as possible, whereas RMSD and HYBRID ought to be as close to zero as possible.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Some Unmodified Household Adsorbents for the Adsorption of Benzalkonium Chloride—A Kinetic and Thermodynamic Case Study for Commercially Available Paper

Bitay,

Csavdari

2023

Toxics

View full text Add to dashboard Cite

The extensive use of biocide surfactant benzalkonium chloride (BAC) during the SARS-CoV-2 pandemic has led to the buildup of this hazardous chemical in waste, surface and groundwater. e The study aims to elucidate whether various low-cost household materials are suitable, in their unmodified and untreated form, to effectively adsorb BAC from its aqueous solutions.. Additionally, if a proper adsorbent is identified, a description of the kinetics and thermodynamics of the process is also targeted. From among the five tested materials, a commercially available white household paper towel was chosen to best satisfy the criteria of low price, large availability, and standardization degree, as well as high adsorption capacity within a fairly short time window needed until equilibrium. Batch experiments were carried out with a commercial mixture of BAC-12 and BAC-14 within a temperature range of 18-45 degrees Celsius, and a 25-100 mg/g BAC/adsorbent initial mass ratio range, respectively. The overall process follows a pseudo-second-order kinetic law, with an apparent activation energy of 73.35 KJ/mole. Both the Langmuir and the Redlich–Peterson isotherms describe the equilibrium data at 298 K well, with a Gibbs free energy of −20.64 KJ/mole. These findings are in agreement with previous reports and suggest a hybrid but chemisorption-dominated process.

show abstract

…”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Some Unmodified Household Adsorbents for the Adsorption of Benzalkonium Chloride—A Kinetic and Thermodynamic Case Study for Commercially Available Paper

Bitay,

Csavdari

2023

Toxics

View full text Add to dashboard Cite

show abstract

“…These findings imply that MB is adsorbed in monolayers on the surfaces of Fe 3 O 4 -CHBNC and Fe 3 O 4 -KLBNC. The Temkin isotherm model assumes an interaction between the adsorbent and adsorbate [61]. According to this model, the heat of adsorption of all molecules in a certain layer decreases linearly with surface coverage.…”

Section: Adsorption Isotherm and Kinetics Modelmentioning

confidence: 99%

Magnetic iron‐oxide coffee husk and khat waste biochar nanocomposites for removal of methylene blue from aqueous solution

Kochito,

Gure,

Beyene

et al. 2024

Separation Science Plus

View full text Add to dashboard Cite

Wastewater from the textile and dyeing industries contains hazardous dyes. This study aims to determine the effectiveness of magnetic biochar nanocomposites synthesized from khat leftovers (KLs) and coffee husks (CHs) in removing methylene blue (MB) from wastewater. Magnetic biochar nanocomposites were synthesized by pretreating 25 g of biomass with a 12.5 mmol mixture of FeS and FeCl3 at a 1:1 molar ratio, followed by pyrolyzing at 300°C for 1 h. The resulting products were analyzed using X‐ray diffraction, Fourier transform infrared, scanning electron microscope, and Brunauer‐Emmett‐Teller. The results showed that the adsorbents are amorphous, and the activated biochars, are more porous and contain various functional groups such as C‐O, C = C, O‐H, C‐H, and Fe‐O. When 0.2 g of pristine biochars of CH and KL were applied to 20 mL aqueous solutions containing 20 mg/L of MB at pH 7.5 and 25°C, they removed 44.73% and 75.26% of MB, respectively. However, the resulting nanocomposites exhibited a maximum removal efficiency of 99.10% and 99.23% with magnetic iron oxide‐CH biochar nanocomposite (Fe3O4‐CHBNC) and magnetic iron oxide‐KL biochar nanocomposite (Fe3O4‐KLBNC), respectively, with maximum adsorption capacities of 51.02 and 78.13 mg/g. The reusability study also showed removal efficiencies of 77.57% and 83.49% up to six‐cycle reuse.

show abstract

“…All materials were obtained from Xi’an Qiyue Biotechnology Co. We weighed 200 mg of DOTSOV, WIZMAV, and RUBTAK, dried them at 353.15 K under vacuum for 6 h, and subjected them to CH 4 isothermal adsorption at atmospheric pressure using a corrosive gas-adsorption analyzer (BSD-PMC) at 298 K; the equilibrium time for the adsorption was 120 s. To obtain adsorption isotherms, we introduced a certain amount of CH 4 adsorbate gas into the sample tube and measured the adsorption partial pressure by controlling the equilibrium pressure in the sample tube. We finally obtained the adsorption isotherm by gradually adding the adsorbate gas to increase the adsorption equilibrium pressure …”

Section: Experimental Preparation Of Mofs and Validation Of Simulatio...mentioning

confidence: 99%

Lithium-Ion Doping for Enhanced Hydrogen Sulfide Adsorption on Metal–Organic Frameworks: Grand Canonical Monte Carlo and Density Functional Theory Simulations

Meng,

Zhou,

Wang

et al. 2023

J. Phys. Chem. C

View full text Add to dashboard Cite

The use of metal−organic frameworks (MOFs) has emerged as a promising solution for sequestering toxic hydrogen sulfide (H 2 S). To find the best conditions for improving the H 2 S adsorption performance, we conducted grand canonical Monte Carlo simulations based on high-throughput screening of 20 selected materials. Furthermore, we used lithium-ion doping to modify materials that showed potential for further improvement. Density functional theory calculations helped us identify lithiumion doping sites. Our findings revealed that lithium-ion doping could effectively increase the H 2 S adsorption capacity of the original MOF structure. Among all of the doping methods, doublesided opposite doping showed the most notable improvement in the H 2 S adsorption capacity of MOFs. Lithium-ion doping altered the H 2 S-molecule adsorption sites in the MOFs, shifting from dispersion to concentration. This change in adsorption sites was caused by the modification of van der Waals and electrostatic forces between molecules, where van der Waals forces played a dominant role. The research findings indicate that not all lithium-ion doping methods could enhance the H 2 S adsorption capacity of MOFs. When double-sided misaligned doping sites are used, certain materials (QUQGAL and HIKQOK) may exhibit a decreased adsorption capacity. This study provides a theoretical foundation for applying lithium-ion doping to improve H 2 S adsorption on MOFs.

show abstract

Application of isotherms models and error functions in activated carbon CO2 sorption processes

Cited by 55 publications

References 75 publications

Some Unmodified Household Adsorbents for the Adsorption of Benzalkonium Chloride—A Kinetic and Thermodynamic Case Study for Commercially Available Paper

Some Unmodified Household Adsorbents for the Adsorption of Benzalkonium Chloride—A Kinetic and Thermodynamic Case Study for Commercially Available Paper

Magnetic iron‐oxide coffee husk and khat waste biochar nanocomposites for removal of methylene blue from aqueous solution

Lithium-Ion Doping for Enhanced Hydrogen Sulfide Adsorption on Metal–Organic Frameworks: Grand Canonical Monte Carlo and Density Functional Theory Simulations

Contact Info

Product

Resources

About