Valorisation of spent coffee grounds as CO2 adsorbents for postcombustion capture applications

Plaza, M.G.; González, Ana Silvia; Pevida, C.; Pís, J.J.; Rubiera, F.

doi:10.1016/j.apenergy.2012.05.028

Cited by 252 publications

(91 citation statements)

References 56 publications

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“…The two peaks with maximum values of 307 and 399 °C, respectively, can be attributed to the degradation of the hemicellulose and lignin in the SCG (Plaza et al 2012;Li et al 2014). In addition, another degradation peak was observed for SCG at a relatively low temperature of 213 °C, which has not been reported by other researchers (Plaza et al 2012;Li et al 2014).…”

Section: Thermal Degradationmentioning

confidence: 46%

Characterization of Wastes and Coproducts from the Coffee Industry for Composite Material Production

et al. 2016

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This study characterizes and compares coffee chaff (CC) and spent coffee grounds (SCG), the two most useful coffee waste products, and evaluates their performance as fillers and/or reinforcing agents in polymer composites. The morphologies of the CC and the SCG were studied using a scanning electron microscope (SEM). Detailed compositional and elemental analyses of the samples were carried out using several techniques. The thermal stabilities of the two types of biomass were evaluated using thermogravimetric analysis (TGA). Infrared spectroscopy was performed to investigate the functional groups available on the surface of the biomass. It was found that the CC had higher thermal stability, lower fat content, and a denser fibrous structure than the SCG, making it potentially a more suitable material than the SCG for use as a reinforcing filler in polymer composites. To verify this potential, CC and SCG filled polypropylene composites were produced and evaluated.

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Section: Thermal Degradationmentioning

confidence: 46%

Characterization of Wastes and Coproducts from the Coffee Industry for Composite Material Production

et al. 2016

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“…Carbon adsorbents developed from different agricultural and food industry residues have shown potential as adsorbents for CO 2 capture applications [3][4][5][6][7][8][9][10][11][12][13]. These materials present the added advantage that they have fixed atmospheric carbon during their growth, reducing the carbon footprint of the final material.…”

Section: Introductionmentioning

confidence: 99%

CO 2 adsorbent pellets produced from pine sawdust: Effect of coal tar pitch addition

et al. 2015

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The main drawbacks of developing carbon adsorbents from pine sawdust, an abundant biomass feedstock, are the low carbon yield of the process and the poor mechanical properties of the resulting carbons. In an attempt to overcome these limitations, the effect of the addition of coal tar pitch was assessed. Adsorbent pellets were produced from pine sawdust and coal tar pitch by activation with CO 2 . The preparation process was optimized by using as decision variables the carbon yield and the adsorption performance of the adsorbents in conditions representative of post-combustion capture applications (10% CO 2 at atmospheric pressure and at 50 °C). Subjecting the composite pellets to a pre-oxidation treatment with air increased the carbon yield of the production process, and also improved the adsorption kinetics and capacity of the final adsorbents. The prepared adsorbents present a high carbon yield, a superior mechanical resistance and a competitive adsorption performance.

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“…Therefore, CMS with micropore require the presence of a specific porous network containing pore mouths of molecular sieve dimensions, together with a relatively high micropore volume. These features will confer them with a high adsorption capacity and selectivity [4]. Figure 6 shows the adsorption capacity profiles of GAC, CMSGAC, and CMSCOM were 1.74, 3.26 and 4.06 mol CO2/kg absorbent, respectively.…”

Section: Selectivity Studiesmentioning

confidence: 99%

“…Moreover, amine scrubbing process requires also special management from specialists. Other technologies developing aims to reduce the cost in the capture steps, including adsorption with activated carbon which is absorbent that has high adsorption capacity at ambient pressure, insensitiveness to moisture, easy regeneration, and low cost [4].…”

Section: Introductionmentioning

confidence: 99%

Carbon Dioxide Adsorption Using Activated Carbon via Chemical Vapor Deposition Process

Anuwattana

Patkool

Chawakitchareon

2016

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Abstract. This research aims to study the physical-chemical characteristics and carbon dioxide adsorption using commercial activated carbon (GAC) by comparing with commercial activated carbon. Chemical vapor deposition (CVD) of carbon molecular sieve prepared from activated carbon (CMSGAC) was prepared using acetylene at various conditions, such as temperature, time and acetylene flow rate. The results indicated that CMSGAC had high adsorption capacity and high selectivity for the adsorption ratio between carbon dioxide and methane. The experiments were carried out by using the samples of GAC, CMSGAC, and commercial carbon molecular sieve (CMSCOM) for adsorption of mixed gas of 30% CO2, 20% N2, and 50% CH4, respectively. The results showed that the adsorption efficiency at 50% of inlet carbon dioxide concentration of GAC, CMSGAC, and CMSCOM was at 85, 114, and 140 min, respectively. The purity of methane was 81.53, 93.16, and 98.26%, respectively. The selectivity for the adsorption ratio between carbon dioxide and methane was 1.32, 16.52, and 24.89, respectively. The cycle time of the samples was 3, 7, and 8 cycles, respectively. Finally, the maximum adsorption capacity of the samples was 1.74, 3.26, and 4.06 mole CO2/kg absorbent, respectively.

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Valorisation of spent coffee grounds as CO2 adsorbents for postcombustion capture applications

Cited by 252 publications

References 56 publications

Characterization of Wastes and Coproducts from the Coffee Industry for Composite Material Production

Characterization of Wastes and Coproducts from the Coffee Industry for Composite Material Production

CO 2 adsorbent pellets produced from pine sawdust: Effect of coal tar pitch addition

Carbon Dioxide Adsorption Using Activated Carbon via Chemical Vapor Deposition Process

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