Process synthesis for coffee husks to energy using hierarchical approaches

Dal-Bó, Vanessa; Lira, Taísa Shimosakai de; Arrieche, Leonardo; Bacelos, Marcelo Silveira

doi:10.1016/j.renene.2019.04.089

Cited by 18 publications

(5 citation statements)

References 43 publications

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“…Coffee is a large-tonnage agricultural commodity, the world production of which is about 9.5 thousand tons per year [4,5].…”

Section: Fig 1 World Coffee Productionmentioning

confidence: 99%

Secondary raw materials of coffee plant processing are an alternative source of pectin substances

Donchenko,

Lukyanenko,

Gelgay

et al. 2023

E3S Web Conf.

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The article presents the results of studies of the content of pectin substances of secondary raw materials of coffee processing – pulp (СP). СP includes both the shell (skin, epidermis, exocarp) and the pulp itself (mesocarp). Industrial coffee varieties cultivated and processed in different regions of Ethiopia were selected as the object of research. The research results have shown that the coffee waste generated can be considered as a source of pectin substances for the development of functional nutrition products.

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“…Coffee is a large-tonnage agricultural commodity, the world production of which is about 9.5 thousand tons per year [4,5].…”

Section: Fig 1 World Coffee Productionmentioning

confidence: 99%

Secondary raw materials of coffee plant processing are an alternative source of pectin substances

Donchenko,

Lukyanenko,

Gelgay

et al. 2023

E3S Web Conf.

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“…Chala et al [51], and Rivera and Ortega-Jimenez [39] studied the energy potential of coffee through the use of by-products such as pulp, mucilage and husk, from a case study in Ethiopia and Colombia, respectively. In turn, Dal-Bó et al [52] relied on heuristic and evolutionary approaches to optimize the technical features of energy generation from coffee husk and concluded that pyrolysis is an appropriate method for energy production from this residue. On the other hand, wet residues such as pulp and mucilage, whose moisture content is approximately 85% and 92% [53,54], respectively, are often used for biogas generation from AD.…”

Section: Literature Reviewmentioning

confidence: 99%

Evaluation of Energy Potential from Coffee Pulp in a Hydrothermal Power Market through System Dynamics: The Case of Colombia

et al. 2022

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Colombia has abundant solar, wind, and biomass resources for energy production with non-conventional renewable energy (NCREs) sources. However, the current participation of NCREs is negligible in the electricity mix of the country, which has historically depended on hydroelectric plants. Meteorological phenomena, such as the El Niño–Southern Oscillation (ENSO), threaten the energy supply during periods of drought, and the generation of energy using fossil fuels is necessary to offset the hydric deficit. Since Colombia is one of the largest coffee producers in the world, this study used system dynamics to evaluate the energy potential from cherry coffee pulp and analyze trends in the energy supply for different energy sources in scenarios of climatic vulnerability. First, the causal relationship of the system was identified, and the key variables of the model were projected. Then, the behavior of the system was evaluated by simulating a 120-month period. The results showed a generation potential from coffee pulp of 177 GWh per year and a power generation of 11,250 GWh and 7537 GWh with solar and wind resources, respectively, by 2030. Finally, it was confirmed that including new renewable resources is a key factor in supporting hydraulic generation in the warm phase of ENSO while reducing thermal generation dependence.

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“…Brazil is the world's leading producer and exporter of coffee with around 356 thousand tons in the 2019/2020 crop [1]. With the processing of coffee, the wastes generated are the spent coffee grounds, the coffee silverskin and the coffee husks, the latter being the main one, since it is estimated that for every 1,000 kg of processed coffee, 180 kg of coffee husks are generated [2,3]. Although the coffee husk is reused only as fertilizer, it has functional groups such as phenolic, lactonic, carboxylic and basic groups and is rich in organic nutrients made up of carbon molecules, therefore, it can present itself as a material with high affinity in recovering organic molecules, and can be a potential adsorbent applied in the treatment of effluents from different processes [4,5].…”

Section: Introductionmentioning

confidence: 99%

Development of Adsorbent Materials Using Residue from Coffee Industry and Application in Food dye Adsorption Processes

Castro

Battocchio

Ribeiro

et al. 2023

Braz. arch. biol. technol.

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The aim of this study was to develop an adsorbent from coffee husk, residue from the coffee industry by different activation methods and to evaluate its application in the treatment of effluent containing synthetic Ponceau 4R dye. The activations were with phosphoric acid and zinc chloride, then the samples were characterized in terms of physical and chemical composition, structure and morphology, thermal behavior and kinetic and thermodynamic study. Regarding the characterization of the material, the activation with phosphoric acid showed porous morphology and a high surface area (429.7 m² g -1 ) and with the kinetic study it was possible to obtain an equilibrium time of 60 min and dispersion according to Elovich kinetics (R 2 = 0.96 and RMSE < 0.24). According to the experimental design, the adsorptive capacity can be evaluated with the significant result (qe = 19.87 mg g -1 ) under the conditions of 90 min of the adsorption process and at the concentration of 2 g L -1 of adsorbent. In relation to the equilibrium study the Langmuir model fit the data with coefficient of determination of R 2 = 0.84. Finally, the Ponceau 4R dye adsorption process using coffee husks as an activated carbon was thermodynamically favorable through the negative Gibbs free energy and positive entropy (+0.022 kJ mol -1 K -1 ). Therefore, the use of coffee husk as activated carbon proved to be a favorable material for Ponceau 4R dye adsorption. HIGHLIGHTS• The adsorbent activated with H2PO4 removed around 100% of Ponceau 4R dye.• The increase in temperature influenced the increase in maximum adsorptive capacity.• Langmuir's isotherm was better suited to the experimental data of the Ponceau 4R dye.

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Process synthesis for coffee husks to energy using hierarchical approaches

Cited by 18 publications

References 43 publications

Secondary raw materials of coffee plant processing are an alternative source of pectin substances

Secondary raw materials of coffee plant processing are an alternative source of pectin substances

Evaluation of Energy Potential from Coffee Pulp in a Hydrothermal Power Market through System Dynamics: The Case of Colombia

Development of Adsorbent Materials Using Residue from Coffee Industry and Application in Food dye Adsorption Processes

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