Production of bioethanol from Robusta coffee pulp (Coffea robusta L.) in Vietnam

Phuong, Do Viet; Quoc, Le Pham Tan; Tan, Pham Van; Duy, Le Nguyen Doan

doi:10.21603/2308-4057-2019-1-10-17

Cited by 11 publications

(7 citation statements)

References 23 publications

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“…The pulps take up to 1m thick of the cherries. The pulp and parchment take 40% [57] and, 20% of the weight of the Robusta and Arabica cherry [50]. Then, if the small-scale coffee producers can follow the process investigated in their respective countries, the quality of African coffee can also be increased.…”

Section: The Inter-zone Coffee Beans Parameters Comparisonmentioning

confidence: 99%

Physical and Mechanical Properties of Coffee Cherries and Beans in Africa: Review and the State of Arts

Bizimungu¹,

Ahouansou²,

Semassou³

et al. 2022

fst

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Coffee is an important source of income for African smallholder farmers. The world is predominated by three coffee varieties, namely Arabica, Robusta, and Liberica originated in the African countries. However, the low coffee quality attributes can affect the coffee beans" price due to the improper post-harvesting processes. Therefore, this work is aimed to review the physical and mechanical properties of the African coffee cherries and beans on the country-wise level, and review the methods used to measure quality parameters and compare the key coffee quality parameters. This work was qualitatively conducted using secondary data on African Arabica and Robusta coffee from journals, conference proceedings, and reports. Methods used for determining the coffee beans" properties were explored country wise. The coffee attributes of the two coffee varieties were compared through statistical analysis using ANOVA. The review found that the coffee quality depends on geographical characteristics, agronomic factors, and post-harvesting processes. The coffee cherries de-pulping process is linked to the coffee quality to avoid the damage of parchment coffee beans based particularly on the size and shape of coffee cherries and beans. The analysed quality parameters showed that the Ethiopian Arabica coffee beans were larger than the Ghanaian Robusta coffee beans. While the size of Robusta coffee in Eastern African countries, particularly Uganda, is bigger than those in Western countries, especially Ghana. Therefore, the information on the coffee quality attributes can help to improve the performance parameters of the coffee de-pulping machine and enhance the price of African coffee.

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Section: The Inter-zone Coffee Beans Parameters Comparisonmentioning

confidence: 99%

Physical and Mechanical Properties of Coffee Cherries and Beans in Africa: Review and the State of Arts

Bizimungu¹,

Ahouansou²,

Semassou³

et al. 2022

fst

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“…(3) W M caso de la pulpa de café los elementos carbono, nitrógeno, azufre y oxígeno se encuentran dentro del rango indicado en las referencias [25], [26], solo en el caso del hidrógeno se obtuvo WF = Peso inicial de la muestra libre de extraíbles (g); WM = Peso final de la muestra después del tratamiento (g). 4) Contenido de holocelulosa: Para esta prueba se utilizó el Método de Jayme-Wise [23].…”

Section: A Análisis Elemental Próximo Y Poder Caloríficounclassified

Characterization of Two Lignocellulosic Biomasses Coffea Arabica L. for the production of Biochar

Paredes¹,

Pretell²,

Pilco³

et al. 2022

Proceedings of the 20th LACCEI International Multi-Conference for Engineering, Education and Technology: “Education, Research A

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In Peru, the growing production of agricultural crops such as coffee generates large volumes of solid waste. In 2020 alone, around 598 thousand tons of lignocellulosic waste were obtained from the coffee harvest, which, for the most part, are dumped in the field and used as compost or burned for the operation of machinery, causing environmental and health problems. Two agricultural biomasses from the coffee harvest (pulp and husk) were characterized by elemental analysis (C, H, O, N and S), calorific value, pH, proximate analysis (moisture content, ash, volatile matter, and fixed carbon), chemical analysis (cellulose, lignin and holocellulose), thermogravimetric analysis and IR spectroscopy. The values reported for the elemental, proximal, chemical, calorific value and pH analyzes agree with those obtained in previous studies and they are indicators of a great potential to produce biochar through thermochemicalprocesses such as pyrolysis or gasification. Finally, higher contents of lignin, ashes and fixed carbon were obtained for the coffee pulp, turning out to be a better precursor for biochar applied to soil conditioning, unlike the coffee husk that, due to the lower content of ashes, turns out to be a better precursor. for obtaining biofuels.

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“…Table 1 presents the results of the content of cellulose and lignin in the CP. 13-57.9 18-13 [35] 57.9 [36] 16.0-25.88 [37] Table 1 shows the results obtained in the research on the quantification of lignin and cellulose in the CP. As it can be seen, the value of cellulose is higher than that of lignin, and these are within the bibliographic reports presented in the literature.…”

Section: Lignocellulosic Content Of the Cpmentioning

confidence: 99%

Biosorption of Pb(II) Using Coffee Pulp as a Sustainable Alternative for Wastewater Treatment

et al. 2021

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The present research shows the results obtained from the biosorption process of Pb, using coffee pulp as a biosorbent in synthetic waters. To do this, the lignin and cellulose content and the percentage of removal of Pb2+ ions was determined; additionally, the sorption’s optimal variables, such as the optimum pH, the point of zero charge (pHpzc), the kinetics and the adsorption isotherm, were determined. A comparison was made with other by-products derived from coffee crops. According to the results obtained in this research, the cellulose percentage was 29.12 ± 0.22% and the lignin percentage was 19.25 ± 0.16% in the coffee pulp, the optimum pH was 2.0 units and the kinetic model, which adjusted to the biosorption’s process, was the pseudo-second order of Ho and McKay, presenting an isotherm of Langmuir’s model and pHpzc of 3.95 units. Lastly, the removal of the pollutant was 86.45%, with a capacity of maximum adsorption of 24.10 mg·g−1 obtained with a particle size of 180 µm, time of contact of 105 min and at 100 RPM. Finally, we express that (a) the coffee pulp can be used as a sustainable alternative for the removal of the pollutant mentioned in synthetic and/or industrial wastewater matrices, to meet goals 3.9 and 6.9 of the Sustainable Development Goals of the 2030 agenda, and (b) the novelty of this research is the use of an agricultural waste of easy acquisition as a sorbent, without chemical modification, since it presented a high percentage of efficiency in the removal of Pb2+ ions. In turn, the challenge of this research is implementing this green technology on a pilot, semi-industrial and/or industrial scale in wastewater treatment systems.

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Production of bioethanol from Robusta coffee pulp (Coffea robusta L.) in Vietnam

Cited by 11 publications

References 23 publications

Physical and Mechanical Properties of Coffee Cherries and Beans in Africa: Review and the State of Arts

Physical and Mechanical Properties of Coffee Cherries and Beans in Africa: Review and the State of Arts

Characterization of Two Lignocellulosic Biomasses Coffea Arabica L. for the production of Biochar

Biosorption of Pb(II) Using Coffee Pulp as a Sustainable Alternative for Wastewater Treatment

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