Biogas upgrading by adsorption onto activated carbon and carbon molecular sieves: Experimental and modelling study in binary CO2/CH4 mixture

Rainone, F.; D’Agostino, Ottavia; Erto, Alessandro; Balsamo, Marco; Lancia, A.

doi:10.1016/j.jece.2021.106256

Cited by 38 publications

(27 citation statements)

References 31 publications

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“…Moreover, the rise in the inlet concentration of CO 2 reduces the breakpoint time along with a significant rise in the slope of the curves. 60 Different gas molecules have different strengths of interaction with the adsorbent; hence the mechanism for the selective absorption of CO 2 depends on the interaction between CO 2 and the adsorbent in comparison with the other probe molecules. 85 More molecules of CO 2 would be absorbed when the interaction of CO 2 molecules will become stronger in comparison with the other molecules like O 2 , N 2 , and CH 4 .…”

Section: Co 2 Adsorption Mechanism In Mofsmentioning

confidence: 99%

“…87,89 Contrary to this, the mechanism of kinetic sieving is used where the molecular size of gas becomes closer or quite similar to the size of the CO 2 molecule. 60,90 Another famous technique for separating CO 2 is "kineticsdriven sieving" used where the molecular size of CO 2 resembles the size of O 2 , CH 4 , and N 2 . 91 However, finding a MOF that selectively absorbs CO 2 from the exhaust stream is quite challenging.…”

Section: Co 2 Adsorption Mechanism In Mofsmentioning

confidence: 99%

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An Ongoing Futuristic Career of Metal–Organic Frameworks and Ionic Liquids, A Magical Gateway to Capture CO₂; A Critical Review

Ali,

Khan,

Mulk

et al. 2023

Energy Fuels

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Carbon capture and storage (CCS) technologies are the "knight in shining armor" that can save humanity from burnout in the longer term, minimizing damage from CO 2 emissions by keeping them out of the atmosphere. Metal−organic frameworks (MOFs) have received a promising career for CO 2 capture due to their high porosity, surface area, excellent metal-toligand interaction, and good affinity to capture CO 2 molecules. On the other hand, Ionic liquids (ILs) as emerging solvents have reported a significant influence on CO 2 solubility due to their wide range of tunability in the selection of a variety of cations and anions along with the advantage of nonvolatility, high thermal stability, and nonflammability. The current Review highlights the recent progress and ongoing careers of employing MOFs and ILs in carbon capture technologies before their commercialization on a large scale. A brief overview of CO 2 capturing using MOFs and ILs is given under the influence of their possible functionalization to enhance their CO 2 separation. Information on the possible integration of MOFs-ILs as a composite system or membrane-based gas separation is also presented in detail. The integration has a high potential to capture CO 2 while minimizing the unit operation costs for a stable, efficient, and smooth industrial gas separation operation. Present work attempts to link the chemistry of MOF and IL and their successful hybridization (MOF-IL composite) to process the economics for CO 2 capture.

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Section: Co 2 Adsorption Mechanism In Mofsmentioning

confidence: 99%

Section: Co 2 Adsorption Mechanism In Mofsmentioning

confidence: 99%

An Ongoing Futuristic Career of Metal–Organic Frameworks and Ionic Liquids, A Magical Gateway to Capture CO₂; A Critical Review

Ali,

Khan,

Mulk

et al. 2023

Energy Fuels

View full text Add to dashboard Cite

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“…Ben-Mansour et al evaluated the performance improvement by computational fluid dynamics (CFD) modeling for the use of Mg-MOF74 in a TSA process, showing an improvement in productivity and overall power consumption . Rainone et al showed the promising potential of activated carbon and carbon molecular sieves (CMS) adsorbents at a low regeneration temperature for biogas upgrading . Morales-Ospino et al.…”

Section: Introductionmentioning

confidence: 99%

“…6 Rainone et al showed the promising potential of activated carbon and carbon molecular sieves (CMS) adsorbents at a low regeneration temperature for biogas upgrading. 7 Morales-Ospino et al evaluated the energy efficiency of two TSA configurations using a commercial 13X zeolite at moderate desorption temperatures. Although this method seems very promising, conventional TSA processes often show long cycle times due to the indirect heating of the adsorbent.…”

Section: ■ Introductionmentioning

confidence: 99%

Potassium Silicate as Low-Temperature Binder in 3D-Printed Porous Structures for CO₂ Separation

et al. 2023

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Activated carbon sorbents were directly 3D-printed into highly adaptable monolithic/multi-channel systems by using potassium silicate as a low-temperature binder. By employing emerging 3D-printing technologies, monolithic structured sorbents were printed and fully characterized using N2, Ar, and CO2-sorption and Hg-intrusion porosimetry. The CO2-capture performance and the required temperature for active-site regeneration were evaluated by thermogravimetric analysis-looping experiments. A mechanically stable activated carbon sorbent was developed with an increased carbon capture performance, even when a room-temperature regeneration by N2 purging was applied. Although the CO2 uptake slightly dropped after several cycles due to incomplete recovery at room temperature, a capacity increase of 25% was observed in comparison with the original activated carbon powder. To improve the recovery of the active sorbent, an optimization of the desorption step was performed by increasing the regeneration temperature up to 150 °C. This resulted in a CO2 uptake of the composite material of 0.76 mmol/g, almost tripling the working capacity of the original activated carbon powder (0.28 mmol/g). An in situ X-ray diffraction study was carried out to confirm the proposed sorption mechanism, indicating the presence of potassium bicarbonates and confirming the combination of physisorption and chemisorption in our composites. Finally, the structured adsorbent was heated homogeneously by applying a current through the monolith. These results describe the development of a new type of 3D-printed regenerable CO2 sorbents by using potassium silicate as a low-temperature binder, providing high mechanical strength, good chemical and thermal stability, and improving the total CO2 capacity. Moreover, the developed monolith is showing a homogeneous resistivity, leading to uniform Joule heating of the CO2 adsorbent.

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“…In this paper we focus on adsorption technologies, especially materials (in this case, alternative ones), for which proper selection is a key factor in the successful use of this technology in biogas upgrading and cleaning [22]. Typical adsorbents used for the adsorptive separation of methane from carbon dioxide are usually carbon materials [23], such as activated carbons [24,25], carbon molecular sieves [26], and the increasingly popular MOFs [27,28], as well as their modified forms [29]. As waste materials, chars obtained from the pyrolysis of rubber tires have great potential [30], the same as adsorbents produced from biomass [31][32][33].…”

Section: Introductionmentioning

confidence: 99%

Alternative Materials for the Enrichment of Biogas with Methane

et al. 2021

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Carbonaceous adsorbents have been pointed out as promising adsorbents for the recovery of methane from its mixture with carbon dioxide, including biogas. This is because of the fact that CO2 is more strongly adsorbed and also diffuses faster compared to methane in these materials. Therefore, the present study aimed to test alternative carbonaceous materials for the gas separation process with the purpose of enriching biogas in biomethane and to compare them with the commercial one. Among them was coconut shell activated carbon (AC) as the adsorbent derived from bio-waste, rubber tire pyrolysis char (RPC) as a by-product of waste utilization technology, and carbon molecular sieve (CMS) as the commercial material. The breakthrough experiments were conducted using two mixtures, a methane-rich mixture (consisting of 75% CH4 and 25% CO2) and a carbon dioxide-rich mixture (containing 25% CH4 and 75% CO2). This investigation showed that the AC sample would be a better candidate material for the CH4/CO2 separation using a fixed-bed adsorption column than the commercial CMS sample. It is worth mentioning that due to its poorly developed micropore structure, the RPC sample exhibited limited adsorption capacity for both compounds, particularly for CO2. However, it was observed that for the methane-rich mixture, it was possible to obtain an instantaneous concentration of around 93% CH4. This indicates that there is still much potential for the use of the RPC, but this raw material needs further treatment. The Yoon–Nelson model was used to predict breakthrough curves for the experimental data. The results show that the data for the AC were best fitted with this model.

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Biogas upgrading by adsorption onto activated carbon and carbon molecular sieves: Experimental and modelling study in binary CO2/CH4 mixture

Cited by 38 publications

References 31 publications

An Ongoing Futuristic Career of Metal–Organic Frameworks and Ionic Liquids, A Magical Gateway to Capture CO₂; A Critical Review

An Ongoing Futuristic Career of Metal–Organic Frameworks and Ionic Liquids, A Magical Gateway to Capture CO₂; A Critical Review

Potassium Silicate as Low-Temperature Binder in 3D-Printed Porous Structures for CO₂ Separation

Alternative Materials for the Enrichment of Biogas with Methane

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Biogas upgrading by adsorption onto activated carbon and carbon molecular sieves: Experimental and modelling study in binary CO2/CH4 mixture

Cited by 38 publications

References 31 publications

An Ongoing Futuristic Career of Metal–Organic Frameworks and Ionic Liquids, A Magical Gateway to Capture CO2; A Critical Review

An Ongoing Futuristic Career of Metal–Organic Frameworks and Ionic Liquids, A Magical Gateway to Capture CO2; A Critical Review

Potassium Silicate as Low-Temperature Binder in 3D-Printed Porous Structures for CO2 Separation

Alternative Materials for the Enrichment of Biogas with Methane

Contact Info

Product

Resources

About

An Ongoing Futuristic Career of Metal–Organic Frameworks and Ionic Liquids, A Magical Gateway to Capture CO₂; A Critical Review

An Ongoing Futuristic Career of Metal–Organic Frameworks and Ionic Liquids, A Magical Gateway to Capture CO₂; A Critical Review

Potassium Silicate as Low-Temperature Binder in 3D-Printed Porous Structures for CO₂ Separation