Paper Titles
Comparative Optimal Tuning of a PID Controller for a SEDC Motor Using MCTA and TLBO
p.47
Design and Implementation of an Accurate and Simple Remote Medical Store Monitoring System Using ESP32 Microcontroller-Based Wi-Fi and IoT Technology
p.63
Low-Cost Hardware-in-the-Loop Simulation: A Literature Review
p.75
Application Modern Bio-Inspired Optimization Algorithm to Investigate the MPPT of Positive Output Super Lift Luo Converter for PV System
p.89
Development and Performance Evaluation of a Rice Paddy De-Hulling and Winnowing Machine
p.103
Thermal Analysis of a Passive Solar Dryer for Paddy Rice Drying
p.111
Exergetic Analysis of a Solar-Powered Fish Dryer
p.121
Performance Evaluation of a Wood-Polymer Composite Extruder
p.129
Enhancement of Energy Content of Palm Kernel Shell (PKS) Using Particle Size Effects Approach
p.139

Development and Performance Evaluation of a Rice Paddy De-Hulling and Winnowing Machine

Article Preview

Abstract:

This research project centered on the development, construction, and testing of a Rice de-hulling and winnowing machine at the Federal University of Technology, Akure, Ondo State Nigeria. The primary objective was to alleviate the laborious task faced by small-scale farmers during the de-hulling process of paddy rice grains. The choice of materials for fabrication was guided by local availability and aligned with the machine's design specifications and analysis. Within the machine, rice paddy grains were introduced through a hopper and guided between two rubber rollers—one fixed, the other adjustable—rotating in opposite directions at a speed ratio of 1.4:1. This action led to the abrasion and dehusking of the grains. The resulting mixture of dehusked grain and husk underwent separation by a current of air generated by the winnowing fan in the separation unit. The de-husked grains, husk, and remaining un-dehusked grains were then sorted and weighed. Following the performance evaluation of the machine, it was determined that the highest average values for de-hulling efficiency and throughput capacity were 60.13% and 22.52 kilograms per hour, respectively.

You might also be interested in these eBooks
Advanced Materials and Machines, Mechatronics and Control View Preview

Info:

Periodical:

Applied Mechanics and Materials (Volume 934)

Pages:

103-109

DOI:

https://doi.org/10.4028/p-N9fIth

Citation:

Cite this paper

Online since:

February 2026

Authors:

Oyebola Odunayo Olabinjo*, Emmanuel Olusola Olakunle, Samuel Olugbenga Oladele

Keywords:

Adjustable Rubber Rollers, De-Husking, Fixed, Rice Paddy Grains, Winnowing

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

© 2026 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

* - Corresponding Author

References

[1] A., Adeite, (2022). Interesting Facts About Rice Farming in Nigeria. Retrieved from Babban Gona: https://babbangona.com/interesting-facts-about-rice-farming-in-nigeria/.

Google Scholar

[2] A. A., Folami, E. N., Obioha, A. A., Adewole, K. S., and Ibiyemi, (2016). Performance evaluation of a developed rice-processing machine. Journal of Agricultural Engineering, 47(3), 171–176.

DOI: 10.4081/jae.2016.506

Google Scholar

[3] M. R., Cristina, M., Cristina, (2008). 'Rice' in Gluten-Free Cereal Products and Beverages. Food Science and Technology, International Series. Academic Press, Editors: Elke Arendt Fabio Dal Bello Hardcover ISBN: 9780123737397 pp.81-96.

DOI: 10.1016/b978-012373739-7.50022-8

Google Scholar

[4] R., Luka, (2009). Determination of some physical properties of fonio (DigiteriaIbrurua) grown in Northern Nigeria relevant to de-stoning. Abubarkar Tafawa Balewa University Bauchi, Nigeria (unpublished) 2009.

DOI: 10.30880/ijie.2020.12.07.006

Google Scholar

[5] D., Amira, (2019). Which country is the largest producer of Rice in Africa? Https: www.waystocap.com/blog/which country is the largest producer of rice in Africa.

Google Scholar

[6] N., Danbaba, P. Y., Idakwo, A.L., Kassum, C., Bristone, S. O., Bakare, U., Aliyu, I. N., Kolo, M. E., Abo, A, Mohammed, A. N,, Abdulkadir, I.,Nkama, M. H., Badau, M.A., Kabaraini, H.,Shehu, A. O., Abosede, M.K., Danbaba, (2019). Rice Postharvest Technology in Nigeria: An Overview of Current Status, Constraints and Potentials for Sustainable Development. Open Access Library Journal, 6, 5509.

DOI: 10.4236/oalib.1105509

Google Scholar

[7] A. S., Ajala, A. S., & Gana, A. (2015). Analysis of Challenges Facing Rice Processing in Nigeria. Journal of Food Processing, 2015, 1–6.

DOI: 10.1155/2015/893673

Google Scholar

[8] Asunloye, (2019). Nigeria still the largest rice importing country in Africa. Available on http: www.pressreader.com/nigeria/businessdaynigeria/20190620/281689.

Google Scholar

[9] N., Danbaba, N., Iro, P. Y., Idakwo, H.B., Mamudu, U., and Aliyu, U. (2020). Advances in Rice Postharvest Loss Reduction Strategies in Africa through Low Grade Broken Rice Fractions and Husk Value Addition. Intech-Open Limited, United Kingdom.

DOI: 10.5772/intechopen.94273

Google Scholar

[10] K. A., Adedeji, N. A., Raji, E. O., Oyetunji, B., Shola, (2020). Design and fabrication of a motorized rice hulling machine. Journal of Mechanical Engineering Research, 11(1), 1-10.

Google Scholar

[11] J. M., Rickman, H. L. W., Chan, M. P., Harmer, J., Luo, (2013). Grain-boundary layering transitions in a model bicrystal. Surface Science, 618, 88–93.

DOI: 10.1016/j.susc.2013.09.004

Google Scholar

[12] Y. U., Oladimeji, A.M., Ajao, (2014). Structure and determinants of profit efficiency among small scale rice farmers in Kwara State, Nigeria. International Journal of Applied Research and Technology, 3(11): 27-33.

Google Scholar

[13] D., Poonam, (2014). Rice milling. IOSR Journal Engineering 4(5):2278- 8719.

Google Scholar

[14] International Rice Research Institute (IRRI), (2009). Rubber Roll husker, Rice Knowledge bank. Available online at http://www.knowledgebank.irri.org/rkb/rice-milling/commercial-rice-milling-systems/husking/rubber-roll-husker.html. (Accessed on June 2012).

DOI: 10.19103/as.2016.0003.18

Google Scholar

[15] D. Shitanda, Y., Nishiyama, S., Koide, (2001). Performance analysis of an impeller husker considering the physical and mechanical properties of paddy rice. J Agric. Eng. Res 79: 195-203.

Google Scholar

[16] P., Rajkumar, N., Varadharaju, V. V., and Sreenaryaanan, V.V. (2004). Studies on milling outturn of paddy varieties using rubber roll Sheller. Madras agricultural journal, 91:1-4.

Google Scholar

[17] S. M., Dauda, P.A., Adeoye, K.A., Bello A.A., and Agboola, (2012). Performance Evaluation of a Locally Developed Rice Hulling Machine. International Journal of Agronomy and Research (IJAAR) 2(1):15-21.

Google Scholar

[18] F. A., Adisa, C. M., Kevin, A. A., Adewole, O. I., Salami, (2020). Effectiveness of industrial rubber as roller material for rice processing machine. Journal of Agricultural and Natural Resources, 54, 98–104.

Google Scholar

[19] I., Edukondalu, (2014). Development and evaluation of modified rubber roll dehusker for enhanced husking efficiency of paddy, the Andhra agricultural Journal, 61(2). 421-426.

Google Scholar

[20] M., Mason, (2015). How do you find the volume of a 3D trapezoid? Socratic Q&A. Available on https://socratic.org/questions/how-do-you-find-the-volume-of-a-3d-trapezoid.

Google Scholar

[21] P. Meghashyam, C., Yuvaraj, R., Manu, (2014). Design and fabrication of paddy de-husker, International Journal of Application or Innovation in Engineering & Management (IJAEM), 3, 10, 298-306.

Google Scholar

[22] E. J., Shigley, C.R., Mischke, (2001). Mechanical Engineering Design. Sixth Ed., Tata McGraw-Hill. New Delhi.

Google Scholar

[23] R. S., Khurmi, J. K., Gupta, (2005) A Textbook of Machine Design. 14th Edition, Eurasia Publishing House (PVT.) Ltd, Ram Nagar, New Delhi.

Google Scholar

[24] B. O., Akintunde F.A., Oyawale, A. Y., Tunde, (2005). Design and Fabrication of a Cassava Peeling Machine. Nigerian Food Journal 23: 231-238.

DOI: 10.4314/nifoj.v23i1.33621

Google Scholar

[25] C., Gillespie, (2020). How to calculate speed ratio. SCIENCING. Available on Https:// sciencing.com/calculate-speed-ratio-7598425.

Google Scholar