Sustainability of a rice husk recycling scheme

Document Type : Original Article


1 School of Environmental Engineering, Toyama Prefectural University, Toyama, Japan

2 Project Management Department, Vietnam National University, Hanoi, Vietnam

3 Faculty of Bioresources and Environmental Sciences, Ishikawa Prefectural University, Japan


Purpose To ensure the sustainability of rice husk recycling schemes, there are essential conditions that should be considered. In this study, a system in which a fertilizer was obtained after rice husk heat treatment, which also produces hot water as a heat recovery strategy, was considered, and its financial sustainability, based on different conditions in place, was then evaluated.
Method Based on a previous study, three essential conditions that are necessary for the sustainability of the system were identified (i.e., free or low-cost rice husk collection and hauling, production of silica in the amorphous state, and complete recycling of rice husk ash). The necessity of these conditions was confirmed based on the sustainability of the financial balance of the system.
Results A 24-h d-1 operated system is more profitable than one that is operated at 6-h d-1. The pelletizing process is costly; however, the fertilizer in the pellet form can be sold at a relatively higher price. The system was unsustainable when rice husk collection and hauling as well as ash disposal fees were charged.
Conclusion Therefore, the cost of rice husk collection, hauling, and ash disposal as well as the amorphous state of the ash were confirmed as conditions that are necessary to ensure the sustainability of a rice husk recycling scheme.


Alhinai M, Azad AK, Bakar MSA, Phusunti N (2018) Characterisation and thermochemical conversion of rice husk for biochar production. Int J Renew Energ Res 8(3): 1648–1656
Ameer R, Othman R (2012) Sustainability practices and corporate financial performance: A study based on the top global corporations. J Bus Ethics 108: 61–79.,1007/s-1063-011-10551y
Armington W, Chen RB (2018) What to do with all this food? Examining the emerging food waste hauling network in Western New York State. In: 97th Annual Meeting of the Transportation Research Board, Washington, DC; 2018 Jan 7–11
Arnaldo J, Costa S, Paranhos CM (2018) Systematic evaluation of amorphous silica production from rice husk ashes. J Clean Prod 192: 688–697.
Azat S, Korobeinyk AV, Moustakas K, Inglezakis VJ (2019) Sustainable production of pure silica from rice husk waste in Kazakhstan. J Clean Prod 217:352–359.
Banerjee SB (2008) Corporate social responsibility: The good, the bad and the ugly. Crit Sociol 34(1): 51–79.
Demir G, Ozcan HK, Karakus PK, Bakis Y (2017) Solid waste collection route optimisation by geographical information system in Faith, Istanbul, Turkey. Int J Glob Warm 11(3): 263–272
Eiamsa-ard S, Wongcharee K, Chokphoemphun S, Chuwattanakul V, Promvonge P (2019) Investigation on rice husk combustion in a fluidized with longitudinal vortex generators. Earth Environ Sci 265: 1–8. doi:10.1088/1755-1315/265/1/012008
Fernandes IJ, Calheiro D, Kieling AG, Moraes CAM, Rocha TLAC, Brehm FA, Modolo RCE (2016) Characterization of rice husk ash produced using different biomass combustion techniques for energy. Fuel 165:351–359.
Ma JF, Takahashi E (2002) Soil, fertilizer, and plant silicon research in Japan. Elsevier, Amsterdam
Martínez JD, Pineda Tatiana, López JP, Betancur M (2011) Assessment of the rice husk lean-combustion in a bubbling fluidized bed for the production of amorphous silica-rich ash. Energy 36: 3846–3854. doi:10.1016/
Minh TN, Xuan TD, Ahmad A, Elzaawely AA, Teschke R, Van TM (2018) Efficacy from different extractions for chemical profile and biological activities for rice husk. Sustainability.
Passos J, Lourinho G, Alves O, Brito P (2018) A heuristic solution based on Clarke and Wright’s saving algorithm for the optimization of sludge hauling: The case of a Portuguese company. Repositório Comum. Accessed: May 15, 2020.
Pode R (2016) Potential applications of rice husk ash waste from rice husk biomass power plant. Renew Sust Energ Rev 53: 1468–1485.
Prasara AJ, Gheewala SH (2017) Sustainable utilization of rice husk ash from power plant: A review. J Clean Prod 167: 1020–1028.
Quispe I, Navia R, Kahhat R (2017) Energy potential from rice husk through direct combustion and fast pyrolysis. Waste Manag 59: 200–210.
Rufai IA, Uche OAU, Ogork EK (2012) Biosilica from rice husk ash a new engineering raw material in Nigeria. In: National Engineering Conference Exhibition and Annual General Meeting “Harmony 2012.” 2012. p. 1–20
Saceda JJF, de Leon RL, Rintramee K, Prayoonpokarach S, Wittayakun J (2011) Properties of silica from rice husk and rice husk ash and their utilization for Zeolite Y synthesis. Quim Nova 34(8): 1394–1397. 
Sekifuji R, Le VC, Tateda M (2019) Investigation of negative effects of rice husk silica on komatsuna growth using three experiments. Int J Recycl Org Waste Agric. 8 (Suppl 1): S311–S319.
Sekifuji R, Tateda M (2019) Study of the feasibility of a rice husk recycling scheme in Japan to produce silica fertilizer for rice plants. Sust Environ Res 29: 11.
Tateda M (2016a) Bio-Ore of silicon, rice husk: Its use for sustainable community energy supply based on producing amorphous silica, Session Environmental Sciences (2). In: International Congress on Chemical, Biological and Environmental Sciences (ICCBES) Osaka, Japan 2016 May 10–12
Tateda M (2016b) Production and effectiveness of amorphous silica fertilizer from rice husks using a sustainable local energy system. J Sci Res Rep 9(3): 1–12.
Tateda M, Sekifuji R (2019) Trial calculation for knowing the upper limit price for an electricity generation whole system from waste burning, In: 34th International Conference on Solid Waste Technology and Management. Annapolis, MD; 2019 Mar 31- Apr 3
Tchobanoglous G, Theisen H, Vigil S (1993) Collection of solid waste. In: Integrated solid waste management; engineering principles and management issues. McGraw-Hill, Boston, pp 193–245
Uddin MN, Rashid MM, Taweekun J, Techato K, Roy R, Rahman MA (2018) Investigation on producing silica from rice husk biomass. Int J Renew Energ Resour 8: 7–12.
WHO (World Health Organization) (1997) Silica, some silicates, coal dust and dust and para-aramid fibrils. IARC Monographs on the Evaluation of Carcinogenic Risks to Human 68. Accessed: May 15, 2020.
Yesiller N, Hanson JL, Cox JT, Noce DE (2014) Determination of specific gravity of municipal solid waste. Waste Manag 34: 848–858.