Effect of Equivalence Ratio on the Rice Husk Gasification Performance Using Updraft Gasifier with Air Suction Mode

Hendriyana Hendriyana


Rice husk is the waste from agriculture industries that has high potential to produce heat and electricity through the gasification process. Air suction mode is new development for updraft rice husk gasification, where blower are placed at output of gasifier. The objective of this research is to examine these new configuration at several equivalence ratio. The equivalence ratio was varied at 32% and 49% to study temperature profile on gasifier, producer gas volumetric flow rate, composition of producer gas, producer gas heating value, cold gas efficiency and carbon conversion. The time needed to consume rice husk and reach an oxidation temperature of more than 700oC for equivalence ratio of 49% is shorter than 32%. Producer gas rate production per unit weight of rice husk increase from  2.03 Nm3/kg and 2.36 Nm3/kg for equivalence ratio of 32% and 49%, respectively. Composition producer gas for equivalence ratio of 32% is 17.67% CO, 15.39% CO2, 2.87% CH4, 10.62% H2 and 53.45% N2 and 49% is 19.46% CO, 5.94% CO2, 0.90% CH4, 3.46% H2 and 70.24% N2. Producer gas heating value for equivalence ratio 32% and 49% is 4.73 MJ/Nm3 and 3.27 MJ/Nm3, respectively. Cold gas efficiency of the gasifier at equivalence ratio 32% is 69% and at 49% is 55%.


rice husk; gasification; updraft; producer gas; cold gas efficiency

Full Text:



Basu, P. 2010. Biomass Gasification and Pyrolisis-Practical Design. Elsevier Inc., USA.

Bhuiyan, A. M. W., Mojumdar, M. R. R., Hasan, A. K. M. K. 2011. An Improved Method to Generate Electricity and Precipitated Silica from Rice Husk: Perspective Bangladesh. International Journal of Environmental Science and Development. 2(4): 299-305.

Ciferno, J. P., Marano, J. J. 2002. Benchmarking Biomass Gasification Technologies for Fuels, Chemicals and Hydrogen Production. U.S. Department of Energy National Energy Technology Laboratory.

Gravalos, I., Xyradakis, P., Kateris, D., Gialamas, T., Bartzialis, D., Giannoulis, K. 2016. An Experimental Determination of Gross Calorific Value of Different Agroforestry Species and Bio-Based Industry Residues. Natural Resources. 7: 57-68.

Ha-Duong, M. and Nam, N. H. 2014. Rice husk gasification for electricity generation in Cambodia in December 2014. Research Report-Université de Sciences et Technologies de Hanoi, Cambodia.

Hendriyana, Nurdini, L., Prabowo, B. H., Trilaksono, G., Suhendar, R., Kusuma, G. S. 2018. Evaluasi Kinerja Gasifier Up-draft Dengan Umpan Limbah Biomassa Kayu Mahoni Dari Industri Mebel. Prosiding Seminar Nasional Teknik Kimia “Kejuangan” ISSN 1693-4393: B2-1-7.

Htet, M. T. 2018. Design and Performance for 14kW Downdraft Open Core Gasifier. International Journal of Scientific and Research Publications. 8(7): 290-294.

Lertsatitthanakorn, C., Jamradloedluk, J., Rungsiyopas, M. 2014. Study of Combined Rice Husk Gasifier Thermoelectric Generator. Energy Procedia. 52: 159-166.

Lin, K. S., Wang, H. P., Lin, C.-J., Juch, C. -I. 1998. A Process Development for Gasification of Rice Husk. Fuel Processing Technology. 55: 185-192.

Ma, Z., Ye, J., Zhao, C., Zhang, Q. 2015. Gasification of Rice Husk in a Downdraft Gasifier: The Effect of Equivalence Ratio on The Gasification Performance, Properties, and Utilization Analysis of Byproducts of Char and Tar. BioResources. 10(2): 2888-2902.

Moraes, C. A. M., Fernandes, I. J., Calheiro, D., Kieling, A. G., Brehm, F. A., Rigon, M. R., Filho, J. A. B., Schneider, I. A. H., Osorio, E. 2014. Review of The Rice Production Cycle: ByProducts and The Main Applications Focusing on Rice Husk Combustion and Ash Recycling. Waste Management & Research. 32(11): 1034–1048.

Nakawajana, N., Posom, J., Paeoui, J. 2018. Prediction of Higher Heating Value, Lower Heating Value and Ash Content of rice Husk Using FT-NIR Spectroscopy. Engineering Journal. 22(5): 46-56.

Nguyen, D. T. 2018. Theoretical and Experimental Study on Rice Husk Gasification Process on Continous Flow Downdraft Gasifier on Industrial Scale. International Journal of Civil Engineering and Technology. 9 (11): 2082–2093.

Nguyen, H. N., Steene, L. V. D., Le, T. T. H., Le, D. D., Ha-Duong, M. 2018. Rice Husk Gasification: from Industry to Laboratory. IOP Conference Series: Earth and Environmental Science. 159: 012033.

Njogu, P., Kinyua, R., Muthoni, P., Nemoto, Y. 2015. Thermal Gasification of Rice Husks from Rice Growing Areas in Mwea, Embu County, Kenya. Smart Grid and Renewable Energy. 6: 113-119.

Pradhan, A., Ali, S. M., Dash, R. 2013. Biomass Gasification by the use of Rice Husk Gasifier. Special Issue of International Journal on Advanced Computer Theory and Engineering. 2(1): 2319-2526.

Sarkar, T. K., Awal, M. A., Ahiduzzaman, M., Akhtaruzzaman, M., Hossen, M. A. 2012. Evaluation of Husk Feeded Modified Updraft Gasifier. Eco-Friendly Agriculture Journal. 5(6):61-68.

Sheik, M. A., Math, M. C. 2016. A Comparative Evaluation on the Performance of Updraft Gasifier Fuelled with Rice Husk, Corn Cobs and Wood Chips. International Journal of Engineering Research & Technology. 5(7): 640-644.

Shen, J., Zhu, S., Liu, X., Zhang, H., Tan J. 2012. Measurement of Heating Value of Rice Husk by Using Oxygen Bomb Calorimeter with Benzoic Acid as Combustion Adjuvant. Energy Procedia. 17: 208- 213.

Suharyanto. 2018. 2018 Harvested Area and Rice Production in Indonesia. Badan Pusat Statistik and Badan Pengkajian dan Penerapan Teknologi, Jakarta. Indonesia