2022
DOI: 10.1016/j.energy.2021.122467
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Spent coffee grounds biochar from torrefaction as a potential adsorbent for spilled diesel oil recovery and as an alternative fuel

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Cited by 29 publications
(13 citation statements)
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“…The uncoated SCGs have a rough, highly textured surface with heterogeneous porosity and flaky protrusions, resulting in a large specific surface area. 46,48,50,52 This feature makes them highly effective for water purification, as it enhances contact between the SCGs and the contaminants, resulting in a more efficient purification process. The Fig.…”
Section: Resultsmentioning
confidence: 99%
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“…The uncoated SCGs have a rough, highly textured surface with heterogeneous porosity and flaky protrusions, resulting in a large specific surface area. 46,48,50,52 This feature makes them highly effective for water purification, as it enhances contact between the SCGs and the contaminants, resulting in a more efficient purification process. The Fig.…”
Section: Resultsmentioning
confidence: 99%
“…46,47 Since they are widely available, SCG bio-wastes are a convenient and cost-effective starting material for making CoffeeBots. In previous research, coffee grounds subjected to carbonization at high temperature 48–51 or chemical modifications 52–56 showed potential for eliminating oil spills, 48,49,54 organic dyes, 50,52,55 endocrine disruptors, 57 antibiotics, 57,58 heavy metals 51,53,56 and MPs. 59 However, there remains an unmet need for a cost-effective manner to render SCGs amenable to magnetic manipulation and steering, which will enhance their degradation performance and enable magnetic recollection upon completion.…”
Section: Introductionmentioning
confidence: 98%
“…Por otro lado, se logra apreciar un valor bajo de cenizas (menor a 1.0 %) y un valor relativamente alto de poder calorífico [31], lo cual hace que esta biomasa, sea atractiva para una posible valorización térmica. En el caso de la borra de café esta presenta bioaceites y compuestos fitoquímicos como son taninos, cafeína, ácidos clorogénicos, entre otros, [32] los cuales son liberados como volátiles en tratamientos térmicos en atmósfera inerte [20]. La caracterización de la borra de café en el presente estudio muestra valores similares de carbono fijo (rango entre 17 -20 %) y material volátil (rango entre 72 -83 %) en comparación con algunos estudios de la literatura [19], [32].…”
Section: Resultados Y Discusionesunclassified
“…En el caso de la borra de café esta presenta bioaceites y compuestos fitoquímicos como son taninos, cafeína, ácidos clorogénicos, entre otros, [32] los cuales son liberados como volátiles en tratamientos térmicos en atmósfera inerte [20]. La caracterización de la borra de café en el presente estudio muestra valores similares de carbono fijo (rango entre 17 -20 %) y material volátil (rango entre 72 -83 %) en comparación con algunos estudios de la literatura [19], [32]. En cuanto al poder calorífico se obtuvo un valor inferior (21662 kJ/kg) al reportado por los mismos autores: 22.630 kJ/kg y de 23.700 kJ/kg.…”
Section: Resultados Y Discusionesunclassified
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