Coffee extract residue for production of ethanol and activated carbons

Tehrani, Nima Fotouhi; Aznar, Javier S.; Kiros, Yohannes

doi:10.1016/j.jclepro.2014.12.031

Cited by 65 publications

(19 citation statements)

References 41 publications

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“…Comparison with other biomass materials revealed that the HHV of artichoke waste was higher than that of cardoon (Cynara cardunculus L.), a similar plant species (Mañas et al, 2014), and comparable to that of other agricultural residues (Vamvuka and Sfakiotakis, 2011) and hardwoods (Telmo and Lousada, 2011). As an alternative to direct combustion, considering its lignocellulosic nature, artichoke waste could be carbonized to obtain a solid fuel with a higher energy content, as reported by Idris et al (2015) for oil palm biomass, or used to produce activated carbon, as shown by Tehrani et al (2015) with coffee extract residues.…”

Section: Fuel Properties Of Artichoke Waste and Extraction Residuementioning

confidence: 85%

Reuse potential of artichoke (Cynara scolimus L.) waste for the recovery of phenolic compounds and bioenergy

Zuorro

Maffei

Lavecchia

2016

Journal of Cleaner Production

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Section: Fuel Properties Of Artichoke Waste and Extraction Residuementioning

confidence: 85%

Reuse potential of artichoke (Cynara scolimus L.) waste for the recovery of phenolic compounds and bioenergy

Zuorro

Maffei

Lavecchia

2016

Journal of Cleaner Production

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“…To meet this challenge, coffee residue, a ubiquitous waste material, could be tapped into as a potential carbon source as well as other forms of waste biomass. Coffee is second largest commodity traded after petroleum and commercialized worldwide as the most popular beverage in the world [18]. According to, International Coffee Organization (ICO), the world's coffee production is 8 million tons per year [19].…”

Section: Introductionmentioning

confidence: 99%

A green sulfonated carbon-based catalyst derived from coffee residue for esterification

2016

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a b s t r a c tA green sulfonated carbon-based catalyst was successfully synthesized through sulfonation of incompletely carbonized coffee residue (SCAC catalyst). The sulfonation temperature was investigated and the catalytic activity was tested via esterification of caprylic acid. SCAC-200, the highest caprylic acid conversion at 4 h (71.5%) and initial TOF based on SO 3 H acid sites, was synthesized under a carbonization temperature of 600 C for 4 h and sulfonation temperature of 200 C for 18 h. Sulfonation temperature plays a dominant role in determining the SO 3 H site density of SCAC catalysts because side reactions (condensation/oxidation/dehydrogenation) take place at high sulfonation temperature as indicated by oxygen-to-carbon surface ratio. The activities of the SCAC catalysts were also substantially greater than that of Amberlyst-15. A high catalytic activity and catalyst stability for esterification of HCp were achieved in the SCAC catalysts with high surface area and by balancing strong (SO 3 H) and weak (carboxylic and phenolic) acid site densities. Additionally, this catalyst could be regenerated to obtain essentially its initial catalytic activity by MeOH washing. Therefore, the sulfonated coffee residue derived catalyst is promising, economic eco-friendly and potentially substituted for homogeneous H 2 SO 4 catalyst for esterification in industries in the near future.

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“…Para eliminar el exceso de ácido fosfórico, se lavó con agua destilada, hasta lograr un pH constante (6,6-6,7) y se secó nuevamente, a 100°C por 24h, en un horno (Jung et al 2016). Debido a la presencia de material lignocelulósico: celulosa, hemicelulosa y lignina en la borra de café, se espera que el tratamiento con ácido fosfórico modifique su estructura, formando nuevos grupos superficiales funcionalizados (Tehrani et al 2015), dentro de un esqueleto rígido de carbono, con predominio en estructuras aromáticas (Yakout et al 2016).…”

Section: Materiales Y Métodosunclassified

Adsorción del colorante azul directo 2 sobre borra de café en una columna de lecho fijo a escala de laboratorio

Ortega

Cely-Bautista

Arrieta

et al. 2018

Rev. U.D.C.A Act. & Div. Cient.

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RESUMENLa contaminación del agua con colorantes sintéticos, resultado de las actividades industriales, es un problema latente en la sociedad. Su presencia, aun en concentraciones muy bajas, influye drásticamente en los procesos de fotosíntesis, porque impide la penetración de la luz, afectando la vida acuática e, incluso, la salud humana. La adsorción con carbón activado es una de las técnicas más empleadas para remover el color de los efluentes, pero sus altos costos han dirigido la atención de los investigadores hacia el estudio de materiales adsorbentes provenientes, principalmente, de la agroindustria. Este artículo presenta un estudio sobre la remoción del colorante azul directo 2 en disolución acuosa sobre borra de café sin tratar y modificada a 30±1°C, en una columna empacada. Se realizó la caracterización fisicoquímica de los adsorbentes, que incluye la evaluación de las propiedades de textura, mediante isotermas de adsorción, con N2 a 77K, la identificación y cuantificación de grupos funcionales orgánicos, con FTIR y el método de Boemh. El estudio en columna evaluó el efecto de la altura del lecho del adsorbente (Z = 3 y 6cm), el flujo volumétrico (Qv= 2 y 4cm 3 min -1

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Coffee extract residue for production of ethanol and activated carbons

Cited by 65 publications

References 41 publications

Reuse potential of artichoke (Cynara scolimus L.) waste for the recovery of phenolic compounds and bioenergy

Reuse potential of artichoke (Cynara scolimus L.) waste for the recovery of phenolic compounds and bioenergy

A green sulfonated carbon-based catalyst derived from coffee residue for esterification

Adsorción del colorante azul directo 2 sobre borra de café en una columna de lecho fijo a escala de laboratorio

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