Author(s): Ivashchuk O. S.^1*, Atamanyuk V. M.¹, Chyzhovych R. A.¹

Affiliation(s): Department of Chemical Engineering, Institute of Chemistry and Chemical Technologies, Lviv Polytechnic National University, 12, Bandery St., 79013, Lviv, Ukraine

^*Corresponding Author’s Address: [email protected]

Issue: Volume 11, Issue 2 (2024)

Dates:
Submitted: June 18, 2024
Received in revised form: September 5, 2024
Accepted for publication: September 16, 2024
Available online: September 21, 2024

Citation:Ivashchuk O. S., Atamanyuk V. M., Chyzhovych R. A. (2024). Efficiency investigation of coffee production waste drying by filtration method. Journal of Engineering Sciences (Ukraine), Vol. 11(2), pp. F9–F16. https://doi.org/10.21272/jes.2024.11(2).f2

DOI: 10.21272/jes.2024.11(2).f2

Research Area: Processes in Machines and Devices

Abstract. This article presents the results of determining the technologically feasible parameters of filtration drying of coffee production waste based on experimental data on the kinetics of material drying and the hydrodynamics of thermal agent filtration. The lowest total energy costs were observed with the following process parameters: the material layer height of 120 mm, the thermal agent temperature of 90 °C, the velocity through the stationary layer of 1.76 m/s, and the specific energy consumption of 5857 kJ per 1 kg of water. Based on the determined technologically feasible process parameters, an evaluation of the filtration drying method for coffee production waste was performed at an industrial installation. According to the calculation, using the filtration method, 1164 kW h of energy was required to dry about 1000 kg of coffee production waste. A total energy of about 1.65 kW h/kg was required to remove 1 kg of moisture from the material in an industrial filtration drying installation. The results were compared with a drying material with similar initial parameters. It was calculated that to dry 1000 kg of coffee production waste in a rotary dryer, it is necessary to spend about 1625 kW h, and the total energy consumption for removing 1 kg moisture from the studied material is approximately 2.37 kW h/kg. Thus, for a similar output of about 1000 kg/h, filtration drying can reduce energy consumption by about 465 kW·h and reduce the required drying time by more than 20 times. The overall economic effect of using the filtration drying method in industry is expected to be higher, given the significant heat losses to the environment for a rotary dryer due to its large size, long drying time, design features, and the need for energy-intensive auxiliary equipment. After calculating the energy consumption per 1 kg of dry material, it is necessary to spend 12 950 kJ/kg of dry matter, about 41.5 % less than the higher calorific value for experimental samples of briquetted solid fuel made from this material. This result makes it economically feasible to further dry coffee production waste to produce alternative solid fuels.

Keywords: biomass, energy efficiency, technologically feasible parameters, fuel briquettes.

References:

1. Murthy, P.S., Madhava Naidu, M. (2012). Sustainable management of coffee industry by-products and value addition – A review. Resources, Conservation and Recycling, Vol. 66, pp. 45–58. https://doi.org/10.1016/j.resconrec.2012.06.005
2. Siahaan, H.N., Putra, H.S., Hasibuan, M.F. (2023). Utilization of coffee commodity agricultural waste through partnership towards sustainable production and consumption. Jurnal Biologi Tropis, Vol. 23(2), pp. 230–236. https://doi.org/10.29303/jbt.v23i2.6161
3. Martinez-Saez, N., García, A.T., Pérez, I.D., Rebollo-Hernanz, M., Mesías, M., Morales, F.J., Martín-Cabrejas, M.A., del Castillo, M. D. (2017). Use of spent coffee grounds as food ingredient in bakery products. Food Chemistry, Vol. 216, pp. 114–122. https://doi.org/10.1016/j.foodchem.2016.07.173
4. Woo, D.-G., Kim, S.H., Kim, T.H. (2021). Solid fuel characteristics of pellets comprising spent coffee grounds and wood powder. Energies, Vol. 14(2), 371. https://doi.org/10.3390/en14020371
5. Mota, D.A., Krause, L.C., Soares, C.M. (2021). Fatty acid production from Coffee Waste. INFORM International News on Fats, Oils, and Related Materials, Vol. 32(10), pp. 24–27. https://doi.org/10.21748/inform.11.2021.24
6. Issa, M. (2023). Valorization of coffee residue waste: Mini review. Biomedical Journal of Scientific & Technical Research, Vol. 52(3), pp. 43772–43777. https://doi.org/10.26717/bjstr.2023.52.008260
7. Maryanti, E., Rahma, Z.K., Lesmi, J.A., Agus, M.P., Yanty, M.K., Habibah, P.E. (2023). Utilization of coffee skin waste as compost fertilizer in Tapak Gedung Village, Kepahiang. DIKDIMAS: Jurnal Pengabdian Kepada Masyarakat, Vol. 2(3), pp. 133–139. https://doi.org/10.58723/dikdimas.v2i3.222
8. Abdullah, M., Bulent Koc, A. (2013). Oil removal from waste coffee grounds using two-phase solvent extraction enhanced with ultrasonication. Renewable Energy, Vol. 50, pp. 965–970. https://doi.org/10.1016/j.renene.2012.08.073
9. Rocha, M.V., de Matos, L.J., Lima, L.P., Figueiredo, P.M., Lucena, I.L., Fernandes, F.A., Gonçalves, L.R. (2014). Ultrasound-assisted production of biodiesel and ethanol from spent coffee grounds. Bioresource Technology, Vol. 167, pp. 343–348. https://doi.org/10.1016/j.biortech.2014.06.032
10. Kwon, E.E., Yi, H., Jeon, Y.J. (2013). Sequential co-production of biodiesel and Bioethanol with spent coffee grounds. Bioresource Technology, Vol. 136, pp. 475–480. https://doi.org/10.1016/j.biortech.2013.03.052
11. Ivashchuk, O.S., Atamanyuk, V.M., Chyzhovych, R.A., Sobechko, I.B. (2022). Using coffee production waste as a raw material for solid fuel. Journal of Chemistry and Technologies, 30(4), pp. 588-594. https://doi.org/10.15421/jchemtech.v30i4.265116
12. Mujumdar, A.S. (2014). Handbook of Industrial Drying (4th Edn.). CRC Press, Boca Raton, FL, USA. https://doi.org/10.1201/b17208
13. Thibault, J., Alvarez, P.I., Blasco, R., Vega, R. (2010). Modeling the mean residence time in a rotary dryer for various types of solids. Drying Technology, Vol. 28(10), pp. 1136–1141. https://doi.org/10.1080/07373937.2010.483045
14. Ivashchuk, O., Atamanyuk, V., Chyzhovych, R. (2024). Investigation of regularities of the filtration drying kinetics of coffee production waste. Food Science and Technology, Vol. 18(1), pp. 65–72. https://doi.org/10.15673/fst.v18i1.2715
15. Ivashchuk, O.S., Atamanyuk, V.M., Chyzhovych, R.A. (2024). Valourization of using efficiency of filtration drying for alcohol distillery stillage. Case Studies in Chemical and Environmental Engineering, Vol. 10, 100820. https://doi.org/10.1016/j.cscee.2024.100820
16. Ivashchuk, O., Chyzhovych, R., Atamanyuk, V. (2024). Simulation of the thermal agent movement hydrodynamics through the stationary layer of the alcohol distillery stillage. Case Studies in Chemical and Environmental Engineering, Vol. 9, 100566. https://doi.org/10.1016/j.cscee.2023.100566
17. Dziubenko, V.H., Mileikovskyi, V.O., Sachenko, I.A. (2018). Expansion of the range of wet air I-D diagram for environmental safe heat production. Environmental Safety and Natural Resources, Vol. 26(2), pp. 15–22. https://doi.org/10.32347/2411-4049.2018.2.15-22
18. Rezaei, H., Lim, C.J., Sokhansanj, S. (2022). A computational approach to determine the residence time distribution of biomass particles in rotary drum dryers. Chemical Engineering Science, Vol. 247, 116932. https://doi.org/10.1016/j.ces.2021.116932
19. Sai, P.S. (2013). Drying of solids in a rotary dryer. Drying Technology, 31(2), pp. 213–223. https://doi.org/10.1080/07373937.2012.711406
20. Jewiarz, M., Wróbel, M., Mudryk, K., Szufa, S. (2020). Impact of the drying temperature and grinding technique on biomass grindability. Energies, 13(13), pp. 3392. https://doi.org/10.3390/en13133392

  Full Text

© 2024 by the author(s).

This work is licensed under Creative Commons Attribution-Noncommercial 4.0 International License