Effect of operating variables on CO2 adsorption capacity of activated carbon, kaolinite, and activated carbon – kaolinite composite adsorbent

Akpasi, Stephen Okiemute; Isa, Yusuf Makarfi

doi:10.1016/j.wen.2022.08.001

Cited by 25 publications

(6 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this study, the maximum adsorption capacity of CO 2 on Ce 0.5 Cu 0.5 O was 5.72 cm 3 /g at 30 °C. This value is comparable to those of CuO (9.0 cm 3 /g) and Cu 2 O (2.1 cm 3 /g) [46]. This may have occurred due to a low affinity to CO 2 to interact with the surface of Ce-O-Cu.…”

Section: Studies On Co 2 Uptakesupporting

confidence: 71%

“…Greater surface area, pore size, and volume result in higher adsorption capacity. The surface area and pore diameter of Ce 0.5 Cu 0.5 O (17.63 m 2 /g and 39.38 nm) synthesized in our work were higher than those of CuO (4.21 m 2 /g and 35.2 nm) and Cu 2 O (1.36 m 2 /g and 9.89 nm) [46]. However, Ce 0.5 Cu 0.5 O presented a higher CO 2 capture capacity than Cu 2 O but a lower capacity than CuO.…”

Section: Studies On Co 2 Uptakecontrasting

confidence: 53%

See 1 more Smart Citation

Antibacterial Activity and CO<sub>2</sub> Capture by Cerium-Copper Mixed Oxides Prepared Using a Co-precipitation Method

Kamonwannasit,

Futalan,

Khemthong

et al. 2024

Indones. J. Chem.

View full text Add to dashboard Cite

Indoor air pollution is comprised of fine particles, bacteria, fungi, and hydrocarbons. Acceptable indoor air quality is maintained using several layers of air filters. Alternative materials with the capacity to remove CO2 from indoor air with antibacterial efficacy need to be further investigated. Mixed oxides of Ce1.0-xCuxO (x = 0.0, 0.1, 0.5, 0.9, 1.0) were synthesized using a co-precipitation method. Characterization studies revealed that single oxides of Ce1.0O and Cu1.0O were of cubic fluorite and monoclinic crystal structures, respectively. Results also show that Ce0.1Cu0.9O and Ce0.5Cu0.5O were composites. All samples were classified as mesoporous materials with a type IV isotherm, and the main functional group was identified as Ce–O–Cu. The surface area of Ce0.5Cu0.5O was 17.63 m2/g. The highest CO2 adsorption capacity was 5.72 cm3/g for Ce0.5Cu0.5O. Moreover, the greatest antibacterial activity against B. subtilis (12.22 mm inhibition zone) and P. aeruginosa (7.34 mm inhibition zone) was observed for Ce0.5Cu0.5O at a 30 mg/L concentration. The synthesis of mixed Ce1.0-xCuxO oxides along with their satisfactory antibacterial performance and CO2 adsorption capacity, indicate its potential use as an alternative material for inclusion in indoor air filters.

show abstract

Section: Studies On Co 2 Uptakesupporting

confidence: 71%

Section: Studies On Co 2 Uptakecontrasting

confidence: 53%

Antibacterial Activity and CO<sub>2</sub> Capture by Cerium-Copper Mixed Oxides Prepared Using a Co-precipitation Method

Kamonwannasit,

Futalan,

Khemthong

et al. 2024

Indones. J. Chem.

View full text Add to dashboard Cite

show abstract

“…The SO 2 adsorption capacity improved from 0.35 to 0.49 mmol g −1 with an increase in the oxide loading from 0.25 to 0.45 g. The increasing mass (increasing bed height) improves the gas retention time, which provides a better chance for a gas molecule to interact with the active sites. This increased adsorbate-adsorbent interaction enhances the gas adsorption capacity 40 . The effect of gas flow rate was studied between 0.1-0.3 L min −1 with a constant adsorbent mass of 0.25 g (Fig.…”

Section: Resultsmentioning

confidence: 98%

Novel application of sodium manganese oxide in removing acidic gases in ambient conditions

Gupta

Achary

Viltres

et al. 2023

Sci Rep

View full text Add to dashboard Cite

In this study, we have demonstrated the application of sodium manganese oxide for the chemisorption of toxic acidic gases at room temperature. The fabricated alkali ceramic has Na0.4MnO2, Na2Mn3O7, and NaxMnO2 phases with a surface area of 2.6 m2 g–1. Na-Mn oxide was studied for oxidation of H2S, SO2, and NO2 gases in the concentration range of 100–500 ppm. The material exhibited a high uptake capacity of 7.13, 0.75, and 0.53 mmol g–1 for H2S, SO2, and NO2 in wet conditions, respectively. The material was reusable when regenerated simply by soaking the spent oxide in a NaOH-H2O2 solution. While the H2S chemisorption process was accompanied by sulfide, sulfur, and sulfate formation, the SO2 chemisorption process yielded only sulfate ions. The NO2 chemisorption process was accomplished by its conversion to nitrite and nitrate ions. Thus, the present work is one of the first reports on alkali ceramic utilization for room-temperature mineralization of acidic gases.

show abstract

“…The inverse relationship was a consequence of a lowering in gas retention time and limited adsorbate–adsorbent interactions with increasing flow rate. 44 Another aspect of the lower gas flow rate was the restricted evolution of NO gas at the outlet, which decreased from 9.9% (0.2 L min −1 ) to 5.1% for a flow rate of 0.1 L min −1 . This decreased NO evolution was also related to the increased gas retention time with a decreased flow rate.…”

Section: Resultsmentioning

confidence: 99%

Reactive adsorption of NO₂ over the NaCoO₂–Co₃O₄ nanocomposite: experimental study and first-principles calculations

Gupta,

Rajput,

Mehta

et al. 2023

New J. Chem.

View full text Add to dashboard Cite

show abstract

Effect of operating variables on CO2 adsorption capacity of activated carbon, kaolinite, and activated carbon – kaolinite composite adsorbent

Cited by 25 publications

References 11 publications

Antibacterial Activity and CO<sub>2</sub> Capture by Cerium-Copper Mixed Oxides Prepared Using a Co-precipitation Method

Antibacterial Activity and CO<sub>2</sub> Capture by Cerium-Copper Mixed Oxides Prepared Using a Co-precipitation Method

Novel application of sodium manganese oxide in removing acidic gases in ambient conditions

Reactive adsorption of NO₂ over the NaCoO₂–Co₃O₄ nanocomposite: experimental study and first-principles calculations

Contact Info

Product

Resources

About

Effect of operating variables on CO2 adsorption capacity of activated carbon, kaolinite, and activated carbon – kaolinite composite adsorbent

Cited by 25 publications

References 11 publications

Antibacterial Activity and CO<sub>2</sub> Capture by Cerium-Copper Mixed Oxides Prepared Using a Co-precipitation Method

Antibacterial Activity and CO<sub>2</sub> Capture by Cerium-Copper Mixed Oxides Prepared Using a Co-precipitation Method

Novel application of sodium manganese oxide in removing acidic gases in ambient conditions

Reactive adsorption of NO2 over the NaCoO2–Co3O4 nanocomposite: experimental study and first-principles calculations

Contact Info

Product

Resources

About

Reactive adsorption of NO₂ over the NaCoO₂–Co₃O₄ nanocomposite: experimental study and first-principles calculations