CO2 capture using nanoporous TiO(OH)2/tetraethylenepentamine

Irani, Maryam; Gasem, Khaled A. M.; Dutcher, Bryce; Fan, Maohong

doi:10.1016/j.fuel.2016.06.129

Cited by 39 publications

(18 citation statements)

References 36 publications

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“…As can be seen, the CO 2 adsorption of the pristine MgO reaches the saturation point within only 12 min, resulting in a low adsorption capacity of 0.95 mmol/g. Increasing TEPA loading within a suitable range increases the breakthrough time and adsorption capacity of the adsorbents, which is consistent with the results of previous reports [48,49]. is is because, as the loading increases, more amine active sites for CO 2 adsorption are provided.…”

Section: Co 2 Adsorption Behaviorssupporting

confidence: 91%

“…e CO 2 adsorption capacity for the biogas exhibits the same trend, decreasing from 4.87 to 4.59 mmol/g after ten cycles, meaning the capacity loss of only 5.75%. ese capacity drops are lower than those of some amine-based adsorbents reported in the literature [49,65]. e loss of adsorption capacity during the adsorption-desorption cycles could be due to the volatilization of the impregnated TEPA [51,66].…”

Section: Regenerability Of the Adsorbentsmentioning

confidence: 79%

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CO₂ Adsorption from Biogas Using Amine-Functionalized MgO

Kasikamphaiboon

Khunjan

2018

International Journal of Chemical Engineering

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Biogas is a renewable fuel source of methane (CH4), and its utilization as a natural gas substitute or transport fuel has received much interest. However, apart from CH4, biogas also contains carbon dioxide (CO2) which is noncombustible, thus reducing the biogas heating value. Therefore, upgrading biogas by removing CO2 is needed for most biogas applications. In this study, an amine-functionalized adsorbent for CO2 capture from biogas was developed. Mesoporous MgO was synthesized and functionalized with different tetraethylenepentamine (TEPA) loadings by wet impregnation technique. The prepared adsorbents (MgO-TEPA) were characterized by X-ray diffraction (XRD) and N2 adsorption-desorption. The CO2 adsorption performance of the prepared MgO-TEPA was tested using simulated biogas as feed gas stream. The results show that the CO2 adsorption capacities of the adsorbents increase with increasing TEPA loading. The optimum TEPA loading is 40 wt.%, which gives the highest CO2 adsorption capacity of 4.98 mmol/g. A further increase in TEPA loading to 50 wt.% significantly reduces the CO2 adsorption capacity. Furthermore, the stability and regenerability of the adsorbent with 40% TEPA loading (MgO-TEPA-40) were studied by performing ten adsorption-desorption cycles under simulated biogas and real biogas conditions. After ten adsorption-desorption cycles, MgO-TEPA-40 shows slight decreases of only 5.42 and 5.75% of CO2 adsorption capacity for the simulated biogas and biogas, respectively. The results demonstrate that MgO-TEPA-40 possesses good stability and regenerability which are important for the potential application of this amine-based adsorbent.

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Section: Co 2 Adsorption Behaviorssupporting

confidence: 91%

Section: Regenerability Of the Adsorbentsmentioning

confidence: 79%

CO₂ Adsorption from Biogas Using Amine-Functionalized MgO

Kasikamphaiboon

Khunjan

2018

International Journal of Chemical Engineering

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“…These observations confirmed the effective capture of CO 2 with amine loading. The adsorption capacity increased with increasing the PEI loading amount due to the presence of more amine sites available on the surface of the MMO (Irani et al, 2016). The maximum adsorption capacities for MMO-PEI-40 and MMO-PEI-50 was 76.3 and 81 mg/g, respectively.…”

Section: Co 2 Adsorption Of Mmo-peimentioning

confidence: 98%

“…Fossil fuels had a drastic increase in CO 2 emissions during past two centuries by a rapid increase of the world population and industrial activities (Dutcher et al, 2015;Li et al, 2015;Lee et al, 2016;Sanz-Pérez et al, 2016;Hu et al, 2017). The greenhouse effect results from the disruption in carbon balance in earth's atmosphere leads to environmental impacts on the biological ecosystems (Mofarahi et al, 2008;Songolzadeh et al, 2014;Pasieka et al, 2015;Figueiredo et al, 2016;Irani et al, 2016;Luis, 2016;Singh et al, 2016). Therefore, academic and industrial communities have focused on developing promising methods to mitigate the CO 2 concentration to standard levels (Lin et al, 2014;Shekhah et al, 2014;.…”

Section: Introductionmentioning

confidence: 99%

Polyethyleneimine (PEI) Functionalized Metal Oxide Nanoparticles Recovered From the Catalytic Converters of Spent Automotive Exhaust Systems and Application for CO2 Adsorption

2020

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A novel CO 2 sorbent was prepared from the catalytic converters of spent automotive exhaust system by modifying with polyethyleneimine (PEI) through wet impregnation method. The prepared sorbent was characterized by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), X-ray diffraction (XRD) and Brauer-Emmett-teller (BET) analysis before and after functionalization. Different PEI loadings were employed to study the adsorption performance of as-prepared sorbent. The characterization results showed no significant change in the structure, but the surface area was decreased after modification with amine groups. The adsorption was remarkably improved by increasing the PEI loading. The optimal PEI loading on the as-prepared sorbent was 60 wt.%. At optimal PEI loading, the CO 2 adsorption reached to 101.3 mg (g sorbent) −1 at 70 • C and partial pressure of 100 kPa. Further PEI loading had a negative effect on the adsorption. The CO 2 adsorption capacity increased to 125.2 mg (g sorbent) −1 in the presence of 1 vol.% of the H 2 O moisture. Results confirmed the high performance of novel sorbent compared to other porous sorbents such as carbon-based materials. Adsorption/desorption cycles revealed that the PEI-impregnated sorbent can be satisfactorily regenerated after CO 2 adsorption process.

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“…Besides enhancing the heat/mass transfer, CO 2 sorption/desorption kinetics should also be enhanced because the CO 2 sorption/desorption performance of alkali‐based sorbent (inorganic sorbent) is worse than that of amine‐based sorbent (organic sorbent) . Many scholars have suggested that loading 1∼10wt% of TiO 2 , TiO(OH) 2 and ZrO 2 additive on alkali‐based sorbent could enhance the reaction kinetics due to the formation of OH − or the transition state rich in hydroxyl groups on the surface could accelerate the CO 2 sorption/desorption reaction . It has been reported that supporting NaHCO 3 on TiO(OH) 2 reduced the activation energy of NaHCO 3 dramatically from 75 to 36 kJ/mol and the formation of TiO(OH) + and OH − can increase the CO 2 desorption reaction rate …”

Section: Introductionmentioning

confidence: 99%

Use of nanoparticles Cu/TiO(OH)₂ for CO₂ removal with K₂CO₃/KHCO₃ based solution: enhanced thermal conductivity and reaction kinetics enhancing the CO₂ sorption/desorption performance of K₂CO₃/KHCO₃

Liu

Cai

et al. 2018

Greenhouse Gases

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Global climate change resulting from substantial CO2 emissions is increasingly attracting attention, and coal‐fired power plants are a major source of CO2 emission, so it is necessary to control and reduce CO2 emissions from power plants. Using alkali‐based solutions for CO2 capture is thought to be an effective method to achieve this but poor CO2 sorption/desorption kinetics inhibit its development. The use of nanofluids, prepared by adding nanoparticles to an alkali‐based solution, is a promising way to improve CO2 sorption/desorption reactivity because the addition of nanoparticles not only improves the gas‐liquid mass/heat transfer but also enhances the reaction kinetics. In this paper, a nanostructured Cu/TiO(OH)2 was prepared and used to accelerate the CO2 sorption/desorption performance of a potassium‐based solution. The CO2 sorption/desorption reaction rates increased with the thermal conductivity of the nanofluid but the inclusion of more nanoparticles resulted in particle sedimentation. The potassium‐based solution containing 0.014 vol% of the nanostructured Cu/TiO(OH)2 was therefore the targeted nanofluid that gave the best CO2 sorption/desorption performance and cyclic stability. © 2018 Society of Chemical Industry and John Wiley & Sons, Ltd.

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CO2 capture using nanoporous TiO(OH)2/tetraethylenepentamine

Cited by 39 publications

References 36 publications

CO₂ Adsorption from Biogas Using Amine-Functionalized MgO

CO₂ Adsorption from Biogas Using Amine-Functionalized MgO

Polyethyleneimine (PEI) Functionalized Metal Oxide Nanoparticles Recovered From the Catalytic Converters of Spent Automotive Exhaust Systems and Application for CO2 Adsorption

Use of nanoparticles Cu/TiO(OH)₂ for CO₂ removal with K₂CO₃/KHCO₃ based solution: enhanced thermal conductivity and reaction kinetics enhancing the CO₂ sorption/desorption performance of K₂CO₃/KHCO₃

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CO2 capture using nanoporous TiO(OH)2/tetraethylenepentamine

Cited by 39 publications

References 36 publications

CO2 Adsorption from Biogas Using Amine-Functionalized MgO

CO2 Adsorption from Biogas Using Amine-Functionalized MgO

Polyethyleneimine (PEI) Functionalized Metal Oxide Nanoparticles Recovered From the Catalytic Converters of Spent Automotive Exhaust Systems and Application for CO2 Adsorption

Use of nanoparticles Cu/TiO(OH)2 for CO2 removal with K2CO3/KHCO3 based solution: enhanced thermal conductivity and reaction kinetics enhancing the CO2 sorption/desorption performance of K2CO3/KHCO3

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Product

Resources

About

CO₂ Adsorption from Biogas Using Amine-Functionalized MgO

CO₂ Adsorption from Biogas Using Amine-Functionalized MgO

Use of nanoparticles Cu/TiO(OH)₂ for CO₂ removal with K₂CO₃/KHCO₃ based solution: enhanced thermal conductivity and reaction kinetics enhancing the CO₂ sorption/desorption performance of K₂CO₃/KHCO₃