Adsorption Kinetics and Breakthrough of Carbon Dioxide for the Chemical Modified Activated Carbon Filter Used in the Building

Shiue, Angus; Hu, Shih−Cheng; Chang, Shu-Mei; Ko, T.H.; Hsieh, Arson; Chan, Andrew

doi:10.3390/su9091533

Cited by 13 publications

(5 citation statements)

References 25 publications

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“…The pseudo-first-order model describes an adsorption process that is controlled by diffusion and involves only a single adsorption site. The pseudo-second-order kinetic model accounts for the adsorption process that involves the sharing or transfer of electron pairs between the adsorbate and adsorbent, and there are two binding sites on the adsorbent surface [47]. The equations for the two adsorption kinetic models are as follows [48]: q t = q e 1 − e −k 1 t (3) q t = q 2 e k 2 t 1 + tk 2 q e (4)…”

Section: Adsorption Mechanismmentioning

confidence: 99%

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Fabrication of Polyethyleneimine-Functionalized Magnetic Cellulose Nanocrystals for the Adsorption of Diclofenac Sodium from Aqueous Solutions

et al. 2022

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Diclofenac sodium (DS), one of the most used non-steroidal anti-inflammatory drugs worldwide, is often detected in wastewater and natural water. This drug is ecotoxic, even at low concentrations. Therefore, it is essential to fabricate low-cost adsorbents that can easily and effectively remove DS from contaminated water bodies. In this study, a polyethyleneimine (PEI)-modified magnetic cellulose nanocrystal (MCNC) was prepared with a silane coupling agent as a bridge. TEM, FTIR, XRD, and VSM were used to demonstrate the successful preparation of MCNC-PEI. This composite adsorbent exhibited efficient DS removal. Furthermore, the adsorption performance of MCNC-PEI on DS was optimal under mildly acidic conditions (pH = 4.5). Adsorption kinetics showed that the adsorption process involves mainly electrostatic interactions. Moreover, the maximum adsorption capacity reached 299.93 mg/g at 25 °C, and the adsorption capacity only decreased by 9.9% after being reused five times. Considering its low cost, low toxicity, and high DS removal capacity, MCNC-PEI could be a promising adsorbent for treating DS-contaminated water.

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Section: Adsorption Mechanismmentioning

confidence: 99%

“…Polymers 2022, 14, x FOR PEER REVIEW 10 of 14 on the adsorbent surface [47]. The equations for the two adsorption kinetic models are as follows [48]:…”

Section: Adsorption Mechanismmentioning

confidence: 99%

Fabrication of Polyethyleneimine-Functionalized Magnetic Cellulose Nanocrystals for the Adsorption of Diclofenac Sodium from Aqueous Solutions

et al. 2022

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“…The intra-particle diffusion model is expressed as [31][32][33] q t ¼ k p t 0:5 þ c (21) where k p is a rate factor (present CO 2 adsorbed per minute). The plot of this model is multi-linear that indicates there are two or more steps occurring consecutively.…”

Section: Intra-particle Diffusion Modelmentioning

confidence: 99%

Experimental Study of Adsorption on Activated Carbon for CO₂Capture

Ibrahim¹,

Al-Meshragi²

2020

CO2 Sequestration

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The adsorption of carbon dioxide (CO) on activated carbon (AC) prepared from olive trees has been investigated by using a fixed bed adsorption apparatus. The adsorption equilibrium and breakthrough curves were determined at different temperatures 30, 50, 70, and 90°C in order to investigate both kinetic and thermodynamic parameters. Maximum CO 2 sorption capacity on AC ranged from 109.5 to 35.46 and from 129.65 to 35.55 mg CO 2 /g of AC for initial concentrations 10 and 13.725% vol., respectively. Different isotherm models are applied to mathematically model the CO 2 adsorption, and on the basis of the estimated adsorption capacity by model and determination coefficient (r 2), the Langmuir model provides a perfect fit to the experimental data owing to closeness of the r 2 to unity. From the correlation coefficient, it is found that the pseudo-second-order model is well-fitted with the experimental data. In addition, it indicates that CO 2 adsorption is a physical adsorption process and demonstrates a behavior of an exothermic reaction, which is consistent with the thermodynamic analysis. The results obtained in this study conclude that AC prepared from olive trees can be considered as adequate for designing a fixed bed cycle to separate carbon dioxide from flue gases and serve as a benchmark while searching for inexpensive and superior activated carbon production in future studies.

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“…If it fits with the model, a straight line with gradient of 1/β and y-interception of 1/β ln(αβ) will be produced. The Elovich kinetic model assumes that the rate of adsorption exponentially decreases with the increase in the amount of CO 2 adsorbed on the adsorbent surface without any interaction among the adsorbed species [35,36]. By applying boundary conditions and integrate in Equation 3, it results in a new equation as shown below: Figure 6 displays the Elovich plot of CO2 adsorption using the same data.…”

Section: Kinetic Analysismentioning

confidence: 99%

Characterization and Modelling Studies of Activated Carbon Produced from Rubber-Seed Shell Using KOH for CO2 Adsorption

et al. 2019

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Global warming due to the emission of carbon dioxide (CO2) has become a serious problem in recent times. Although diverse methods have been offered, adsorption using activated carbon (AC) from agriculture waste is regarded to be the most applicable one due to numerous advantages. In this paper, the preparation of AC from rubber-seed shell (RSS), an agriculture residue through chemical activation using potassium hydroxide (KOH), was investigated. The prepared AC was characterized by nitrogen adsorption–desorption isotherms measured in Micrometrices ASAP 2020 and FESEM. The optimal activation conditions were found at an impregnation ratio of 1:2 and carbonized at a temperature of 700 °C for 120 min. Sample A6 is found to yield the largest surface area of 1129.68 m2/g with a mesoporous pore diameter of 3.46 nm, respectively. Using the static volumetric technique evaluated at 25 °C and 1.25 bar, the maximum CO2 adsorption capacity is 43.509 cm3/g. The experimental data were analyzed using several isotherm and kinetic models. Owing to the closeness of regression coefficient (R2) to unity, the Freundlich isotherm and pseudo-second kinetic model provide the best fit to the experimental data suggesting that the RSS AC prepared is an attractive source for CO2 adsorption applications.

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Adsorption Kinetics and Breakthrough of Carbon Dioxide for the Chemical Modified Activated Carbon Filter Used in the Building

Cited by 13 publications

References 25 publications

Fabrication of Polyethyleneimine-Functionalized Magnetic Cellulose Nanocrystals for the Adsorption of Diclofenac Sodium from Aqueous Solutions

Fabrication of Polyethyleneimine-Functionalized Magnetic Cellulose Nanocrystals for the Adsorption of Diclofenac Sodium from Aqueous Solutions

Experimental Study of Adsorption on Activated Carbon for CO₂Capture

Characterization and Modelling Studies of Activated Carbon Produced from Rubber-Seed Shell Using KOH for CO2 Adsorption

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Adsorption Kinetics and Breakthrough of Carbon Dioxide for the Chemical Modified Activated Carbon Filter Used in the Building

Cited by 13 publications

References 25 publications

Fabrication of Polyethyleneimine-Functionalized Magnetic Cellulose Nanocrystals for the Adsorption of Diclofenac Sodium from Aqueous Solutions

Fabrication of Polyethyleneimine-Functionalized Magnetic Cellulose Nanocrystals for the Adsorption of Diclofenac Sodium from Aqueous Solutions

Experimental Study of Adsorption on Activated Carbon for CO2Capture

Characterization and Modelling Studies of Activated Carbon Produced from Rubber-Seed Shell Using KOH for CO2 Adsorption

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Product

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Experimental Study of Adsorption on Activated Carbon for CO₂Capture