TORREFACTION OF MOIST MUNICIPAL SOLID WASTE PELLETS USING CHAR OF BAGASSE AS A MICROWAVE ABSORBER
Keywords:
Torrefaction, municipal solid waste, microwave absorber, bagasse charAbstract
The torrefaction of moist municipal solid waste (MSW) pellets using char of bagasse as a microwave absorber (MA) is carried out in a microwave oven at the microwave power of 500-800 W for 12 min. After the torrefaction, moisture is completely removed from the MSW-pellet samples. The solid and energy yields of the torrefied MSW-pellet samples decrease, whereas the higher heating value (HHV) increases, with an increase in the microwave power and the addition of the MA. The hydrogen/carbon (H/C) and oxygen/carbon (O/C) mass ratios of the torrefied MSW-pellet samples decrease and tend towards those of coal. The torrefaction of the MSW pellets at the microwave power of 500 W with the addition of the MA is recommended as it yields the torrefied MSW-pellet samples with the highest HHV and energy yield.
References
Basu, P. (2013). Biomass Gasification, Pyrolysis and Torrefaction. 2nd ed. Academic Press, Cambridge, MA, USA, 530p.
Bilgic, E., Yaman, S., Haykiri-Acma, H., and Kucukbayrak, S. (2016). Is torrefaction of polysaccharides-rich biomass equivalent to carbonization of lignin-rich biomass? Bioresource Technol., 200:201-207.
Bridgeman, T.G., Jones, J.M., Shield, I., and Williams, P.T. (2008). Torrefaction of reed canary grass, wheat straw and willow to enhance solid fuel qualities and combustion properties. Fuel, 87:844-856.
Chen, W.H., Cheng, W.Y., Lu, K.M., and Huang, Y.P. (2011). An evaluation on improvement of pulverized biomass property for solid fuel through torrefaction. Appl. Energ., 88:3,636-3,644.
Chen, W.H., Lu, K.M., and Tsai, C.M. (2012). An experimental analysis on property and structure variations of agricultural wastes undergoing torrefaction. Appl. Energ., 100:318-325.
Chen, W.H., Peng, J., and Bi, X.T. (2015). A state-of-the-art review of biomass torrefaction, densification and applications. Renew. Sust. Energ. Rev., 44:847-866.
Deng, J., Wang, G.J., Kuang, J.H., Zhang, Y.L., and Luo, Y.H. (2009). Pretreatment of agricultural residues for co-gasification via torrefaction. J. Anal. Appl. Pyrol., 86:331-337.
Huang, Y.F., Chen, W.R., Chiueh, P.T., Kuan, W.H., and Lo, S.L. (2012). Microwave torrefaction of rice straw and pennisetum. Bioresource Technol., 123:1-7.
Khan, D., Kumar, A., and Samadder, S.R. (2016). Impact of socioeconomic status on municipal waste generation rate. Waste Manage., 49:15-25.
Laohalidanond, K., Chaiyawong, P., and Kerdsuwan, S. (2015). Municipal solid waste characteristics and green and clean energy recovery in Asian megacities. Energy Procedia, 79:391-396.
Li, H., Qu, Y., Yang Y., Chang, S., and Xu, J. (2016). Microwave irradiation - A green and efficient way to pretreat biomass. Bioresource Technol., 199:34-41.
Liu X, Zhang, Z, and Wu, Y. (2011). Absorption properties of carbon black/silicon carbide microwave absorbers. Compos. Part B-Eng., 42:326-329.
Menendez, J.A., Inguanzo, M., and Pis, J.J. (2002). Microwave-induced pyrolysis of sewage sludge. Water Res., 36:3,261-3,264.
Pollution Control Department. (2018 (2561)). Annual Report on Pollution of Thailand 2560 (2017). Pollution Control Department, Ministry of Natural Resources and Environment, Bangkok, Thailand, 67p. (in Thai)
Song, J., Sun, Y., and Jin, L. (2017). PESTEL analysis of the development of the waste-to-energy incineration industry in China. Renew. Sust. Energ. Rev., 80:276-289.
Sun, N. and Chungpaibulpatana, S. (2017). Development of an appropriate model for forecasting municipal solid waste generation in Bangkok. Energy Procedia, 138:907-912.
Wang, M.J., Huang, Y.F., Chiueh, P.T., Kuan, W.H., and Lo, S.L. (2012). Microwave-induced torrefaction of rice husk and sugarcane residues. Energy, 37:177-184.
Yi, L., Feng, J., Qin, Y-H., and Li, W-Y. (2017). Prediction of elemental composition of coal using proximate analysis. Fuel, 193:315-321.
Zhao, X-G., Jiang, G-W., Li, A., and Li, Y. (2016). Technology, cost, a performance of waste-to-energy incineration industry in China. Renew. Sust. Energ. Rev., 55:115-130.
Zuo, W., Tian, Y., and Ren, N. (2011). The important role of microwave receptors in bio-fuel production by microwave-induced pyrolysis of sewage sludge. Waste Manage., 31:1,321-1,326.
