Simple synthesis of spent coffee ground-based microporous carbons using K2CO3 as an activation agent and their application to CO2 capture

Kim, Min Jeong; Choi, Seung Wan; Kim, Hyun‐Wook; Mun, Sungyong; Lee, Ki Bong

doi:10.1016/j.cej.2020.125404

Cited by 120 publications

(45 citation statements)

References 68 publications

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“…The peaks of diffraction at 2θ = 23.96 • and 45.34 • are envisioned from produced adsorbent which are analogous to the amorphous carbon peaks. Nearly the same diffraction peaks for developed activated carbon-based adsorbents were also observed as reported in the literature [26,44]. The broad (002) diffraction peak (2θ = 15-30 • ) can be credited to the amorphous structure of prepared carbon adsorbent.…”

Section: Morphological and Surface Characteristicssupporting

confidence: 82%

“…The adsorbent was developed from coffee grounds by combination of ammoxidation and KOH activation and CO 2 capture capacity was determined by Thermogravimetric analyzer [25]. The maximal CO 2 capacity of 2.67 mmol/g with a good CO 2 selectivity over N 2 of 74.2 was reported at 35 • C. The spent coffee grounds were used to prepare microporous carbon by solid-state K 2 CO 3 activation for CO 2 capture [26]. The maximal CO 2 capacity of 4.54 mmol/g at 25 • C and 1 atm was reported for the activated carbon prepared by activation at 700 • C for 5 hr.…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Morphological and Surface Characteristicssupporting

confidence: 82%

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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“…Two other broad peaks at approximately 2θ = 24 • and 44 • were observed for all samples. These two diffraction peaks were assigned to the (002) and (10) planes of graphite, respectively [6][7][8]. The carbon structures of the KB and Pd-modified KBs were amorphous [8] and disordered [7].…”

Section: Open: Adsorptionmentioning

confidence: 99%

“…All samples exhibited two clear peaks, which were classified to be in the D band at approximately 1345 cm −1 and the G band at approximately 1595 cm −1 . The disordered carbons and graphitized carbons are represented by the D and G bands, respectively [7,8,31]. As a result, the intensity ratio of the D band to the G band (I D /I G ) is used as a measure of the degree of disorder [7,8,31].…”

Section: Open: Adsorptionmentioning

confidence: 99%

“…Fossil fuels, account for more than 80% of total energy consumption [1][2][3]. Because of the release of greenhouse gases, the continued widespread use of fossil fuels has resulted in significant global, environmental, and climate issues, such as global warming [1,2,[4][5][6][7][8]. To address these issues, today's society must transition from a fossil-fuel-dependent framework to a sustainable approach, which necessitates the use of new energies.…”

Section: Introductionmentioning

confidence: 99%

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Temperature Dependence of Hydrogen Adsorption on Pd-Modified Carbon Blacks and Their Enthalpy-Entropy Changes

Kaneko

Toyama

Kojima

et al. 2022

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Metal-carbon composites have recently gained attention as potential hydrogen storage materials. In the present investigation, carbon blacks (CBs) with 0.6 mass %, 4.9 mass %, and 9.3 mass % of Pd were prepared to investigate the cooperative effect together with Pd and CB for hydrogen storage. The hydrogen adsorption isotherms were measured at 77 K, 98 K, 123 K, 148 K, 173 K, 223 K, and 273 K under mild pressures below 1 MPa. The lower temperature gave the higher hydrogen content. Almost all the hydrogen contents of Pd-modified CBs exceeded the sum of the adsorption contents of CB and the occluded amounts of the assumed hydride, PdH0.6. The highest hydrogen content was recorded for Pd 0.6 mass %-modified CB at 77 K. At temperatures above 77 K, CBs with the higher Pd contents adsorbed more hydrogen than Pd 0.6 mass %-modified CB, and they indicated an increase in the absolute values of adsorption enthalpy with the progress of adsorption. Pd was thought to be at first blocking deep potential sites, with accessibility to hydrogen acceptable sites gradually increasing as adsorption progressed.

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Natural Products Derived Porous Carbons for CO₂ Capture

Khosrowshahi,

Mashhadimoslem,

Shayesteh

et al. 2023

Advanced Science

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As it is now established that global warming and climate change are a reality, international investments are pouring in and rightfully so for climate change mitigation. Carbon capture and separation (CCS) is therefore gaining paramount importance as it is considered one of the powerful solutions for global warming. Sorption on porous materials is a promising alternative to traditional carbon dioxide (CO2) capture technologies. Owing to their sustainable availability, economic viability, and important recyclability, natural products‐derived porous carbons have emerged as favorable and competitive materials for CO2 sorption. Furthermore, the fabrication of high‐quality value‐added functional porous carbon‐based materials using renewable precursors and waste materials is an environmentally friendly approach. This review provides crucial insights and analyses to enhance the understanding of the application of porous carbons in CO2 capture. Various methods for the synthesis of porous carbon, their structural characterization, and parameters that influence their sorption properties are discussed. The review also delves into the utilization of molecular dynamics (MD), Monte Carlo (MC), density functional theory (DFT), and machine learning techniques for simulating adsorption and validating experimental results. Lastly, the review provides future outlook and research directions for progressing the use of natural products‐derived porous carbons for CO2 capture.

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Simple synthesis of spent coffee ground-based microporous carbons using K2CO3 as an activation agent and their application to CO2 capture

Cited by 120 publications

References 68 publications

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

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

Temperature Dependence of Hydrogen Adsorption on Pd-Modified Carbon Blacks and Their Enthalpy-Entropy Changes

Natural Products Derived Porous Carbons for CO₂ Capture

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Simple synthesis of spent coffee ground-based microporous carbons using K2CO3 as an activation agent and their application to CO2 capture

Cited by 120 publications

References 68 publications

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

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

Temperature Dependence of Hydrogen Adsorption on Pd-Modified Carbon Blacks and Their Enthalpy-Entropy Changes

Natural Products Derived Porous Carbons for CO2 Capture

Contact Info

Product

Resources

About

Natural Products Derived Porous Carbons for CO₂ Capture