CO2 and CH4 Adsorption Behavior of Biomass-Based Activated Carbons

Peredo-Mancilla, Deneb; Ghouma, Imen; Hort, Cécile; Ghimbeu, Camélia Matei; Jeguirim, Mejdi; Bessières, David

doi:10.3390/en11113136

Cited by 26 publications

(7 citation statements)

References 59 publications

(67 reference statements)

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“…The relatively stronger interactions of RHF with the gases could be as a result of significant Columbic attractions between the adsorbent and the gases leading to physical adsorption (physisorption) as implied by the binding distances. [ 48 , 49 , 50 ] Moreover, adsorption energies of the gases on the adsorbents further suggested that stronger interactions exist between RHF and the gases. Values of Δ E ads of −87.65, −76.75, and −55.65 kcal mol −1 for CO 2 , CH 4 and N 2 gases, respectively relative to RH and RHS in the order RHF > RHS > RH.…”

Section: Resultsmentioning

confidence: 99%

Porous Fluorocarbon from Rice Husk for the Efficient Separation of Gases

et al. 2021

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The state-of-the-art technology for CO 2 capture is an amine-based absorption process, which requires substantial investment costs and high energy in addition to the instability and corrosion problems. Natural gas purification techniques to meet the pipeline quality can also include adsorption, cryogenic separation, and membrane separation. More specifically, adsorption over solid adsorbents is more effective and less expensive than liquid absorption using amine solvents. [1][2][3][4][5][6] Gas separation using porous solid adsorbent (especially activated carbon) is the most effective and applicable method in terms of selectivity, large-scale of CO 2 capture, less energy requirement, and simplicity in addition to the high thermal and chemical stability of activated carbon in acidic and basic media. [1][2][3][4][5][6] Using natural charcoal as nonrenewable raw materials with the long conventional process to produce activated carbons is considered as relatively expensive substances. Recently, using biological and other cheap raw materials, several studies were reported on the synthesis of carbon-based materials with high adsorption capacity and economic impact. [3] In addition, activated carbon can also be prepared from industrial wastes such as olive cake [7] or sewage sludge. [8] Activated carbon is now considered as a valuable material for many applications in the industry (mainly as an adsorbent for gas separation) because of its superior properties like high surface area and high adsorption capacity.Moon et al. [1] investigated the use of activated carbon in the separation of CH 4 /CO 2 using the electric swing adsorption method. The adsorption capacity of CO 2 was 40 mg g −1 , and the separation factor of CH 4 /CO 2 was two at 293 K and 1 bar. Kacem et al. [9] used commercial activated carbon to study the separation of CO 2 /N 2 and CO 2 /CH 4 using pressure swing adsorption technique at different operating temperatures and pressures. Selectivity, adsorption capacity, and reusability were among the studied parameters of each adsorbent sample. High purity separation of binary gas mixtures of CH 4 -CO 2 with 95% of CH 4 in the purified gas was achieved. Shen et al. [10] investigated the adsorption of N 2 and CH 4 at different temperatures (303-423 K) and pressure (0-100 kPa) on activated carbon beads. The adsorption capacity of CH 4 and N 2 was 1.9 and 0.27 mol kg −1 , respectively, at 303 K and 100 kPa. Yi A porous fluorocarbon sorbent is synthesized from rice husk (RH) in a microwave reactor and then evaluated for the adsorption of different gases (CH 4 , CO 2 , and N 2 ). The fluorocarbon is characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET), Raman spectroscopy, Thermal gravimetric analysis (TGA), and X-ray photoelectron spectroscopy (XPS). Significant enhancement in the surface area of activated carbon material is obtained from 29 to 531 m 2 g −1 after removing naturally present silica in RH. Results reveal that rice husk fluorocarbon (RHF)...

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Section: Resultsmentioning

confidence: 99%

Porous Fluorocarbon from Rice Husk for the Efficient Separation of Gases

et al. 2021

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“…The potassium hydroxide impregnated adsorbent was prepared from nut-based biomass and 5.5 mmol/g CO 2 loading was attained for a peanut shell at 900 • C temperature [28]. It was acclaimed that the existence of extra oxygen-containing groups increased the adsorbent loading for olive stone-derived activated carbon [29]. A considerably good loading of 101.7 mg CO 2 /g was shown at 30 • C for porous carbon developed from biomass [30].…”

Section: Introductionmentioning

confidence: 99%

Comparative Study of CO2 Capture by Adsorption in Sustainable Date Pits-Derived Porous Activated Carbon and Molecular Sieve

Danish

Parthasarthy

Mesfer

2021

IJERPH

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The rising CO2 concentration has prompted the quest of innovative tools to reduce its effect on the environment. A comparative adsorption study using sustainable low-cost date pits-derived activated carbon and molecular sieve has been carried out for CO2 separation. The adsorb ents were characterized for surface area and morphological properties. The outcomes of flow rate, temperature and initial adsorbate concentration on adsorption performance were examined. The process effectiveness was investigated by breakthrough time, adsorbate loading, efficiency, utilized bed height, mass transfer zone and utilization factor. The immensely steep adsorption response curves demonstrate acceptable utilization of adsorbent capability under breakthrough condition. The adsorbate loading 73.08 mg/g is achieved with an 0.938 column efficiency for developed porous activated carbon at 298 K. The reduced 1.20 cm length of mass transfer zone with enhanced capacity utilization factor equal 0.97 at 298 K with Cin = 5% signifies better adsorption performance for date pits-derived adsorbent. The findings recommend that produced activated carbon is greatly promising to adsorb CO2 in fixed bed column under continuous mode.

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“…It has a high pore volume and surface area that causes activated carbon to have high adsorption. Because of its high adsorption capacity, activated carbon widely applied in various fields of life such as for the purification of water from industrial waste pollutants [1] [2], removal of methylene blue [3]- [5], a cathode battery material in electrochemical devices [6], CO2 adsorption [7] [8], biogas purification [9] [10], and supercapacitor [11].…”

Section: Introductionmentioning

confidence: 99%

Surface Properties and Adsorption Capacities of Rice Bran-Activated Carbon

Negara

Nindia

Septadi

2020

JMEST

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The growing need for activated carbon requires alternative raw materials to replace non-renewable raw materials whose existence is decreasing. Biomass is a very promising precursor, one of which is from rice bran. This research concerns the development of activated carbon derived from rice bran. Carbonization was carried out at 600 O C and physically activated with nitrogen flow rates of 150 mL/min for 40, 80, and 120 minutes. The activated carbons produced (AC-D40, AC-D80, and AC-D120) were characterized to determine the surface properties, surface morphology, and adsorption capacity for nitrogen and blue methylene adsorptions. The results showed that activated carbon that activated for 80 minutes (AC-D80) had the best characteristics. With a pore surface area of 109.389 m 2 /g, a pore volume of 0.083 cm 3 /g, and pores that mostly distributed in the micropore area, this activated carbon has the highest adsorption for nitrogen (53.874 cm 3 /g) and methylene blue (87.560 mg/g) adsorptions compared to activated carbon with activation times of 40 minutes (AC-D40) and 120 minutes (AC-D120).

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CO2 and CH4 Adsorption Behavior of Biomass-Based Activated Carbons

Cited by 26 publications

References 59 publications

Porous Fluorocarbon from Rice Husk for the Efficient Separation of Gases

Porous Fluorocarbon from Rice Husk for the Efficient Separation of Gases

Comparative Study of CO2 Capture by Adsorption in Sustainable Date Pits-Derived Porous Activated Carbon and Molecular Sieve

Surface Properties and Adsorption Capacities of Rice Bran-Activated Carbon

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