Combining wet rendering with torrefaction to improve the fuel characteristics of biochar from food waste

被引：1
作者：
Rasid R.A. [1 ]
Yee T.X. [1 ]
Rahman R.N.U.A. [1 ]
Ismail M. [1 ]
机构：
[1] Faculty of Chemical and Natural Resources Engineering, Universiti Malaysia Pahang, Gambang, 26300, Pahang
来源：
Key Engineering Materials | 2019年 / 797卷
关键词：
Biochar; Biomass; Food waste; Torrefaction; Wet rendering;
D O I：
10.4028/www.scientific.net/KEM.797.309
中图分类号：
学科分类号：
摘要：
Food waste is a potential source of renewable carbon that can be utilized as a feedstock for biofuel production. Instead of disposing it in the landfills, food waste can be processed through thermochemical process known as torrefaction, which is conducted between 200°C and 300°C under inert atmosphere, to produce energy-dense biochar. Due to high oil content in the food waste, wet rendering process is introduced as a pre-treatment step to remove the oil from food waste. In this study, the potential of food waste as a renewable energy source is studied, where the biochar produced from direct torrefaction (DT) is compared with the biochar produced from torrefaction process that is preceded with wet rendering (WR) process. Food waste was torrefied in the fixed bed reactor at temperatures 220°C, 240°C and 260°C, with various residence times (15 min, 30 min and 45 min). The produced biochar were characterized in terms of its elemental composition, High Heating Value (HHV) and proximate analysis which includes moisture content, fixed carbon, ash content and volatile matter. It was found that the torrefied food waste shows improved physical properties when compared to raw food waste. The moisture content showed significant reduction while the fixed carbon increased with increasing torrefaction and residence time. This effects were further improved with WR, especially HHV which indicates that the WR process followed by torrefaction may be able to further improve the produced biochar. © 2019 Trans Tech Publications Ltd, Switzerland.
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页码：309 / 318
页数：9
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共 20 条
  • [1] Uemura Y, Omar W.N., Tsutsui T., Yusup S., Torrefaction of oil palm wastes, Fuel, 90, pp. 2585-2591, (2011)
  • [2] Arias B., Pevida C., Fermoso J., Plaza M., Rubiera F., Pis J., Influence of torrefaction on the grindability and reactivity of woody biomass, Fuel Processing Technology, 89, 2, pp. 169-175, (2008)
  • [3] Chen W., Kuo P., A study on torrefaction of various biomass materials and its impact on lignocellulosic structure simulated by a thermogravimetry, Energy, 35, 6, pp. 2580-2586, (2010)
  • [4] Bridgeman T., Jones J., Shield I., Williams P., Torrefaction of reed canary grass, wheat straw and willow to enhance solid fuel qualities and combustion properties, Fuel, 87, 6, pp. 844-856, (2008)
  • [5] Poudal Jeeban, Ohm Tae-In, A study on torrefaction of food waste, Fuel, pp. 275-281, (2015)
  • [6] Chen H., Jiang W., Yang Y., Yang Y., Man X., State of the art on food waste research: A bibliometrics study from 1997 to 2014, Journal of Cleaner Production, 140, pp. 840-846, (2017)
  • [7] Food Loss and Food Waste, (2015)
  • [8] Bong C. P., Ho W. S., Hashim H., Lim J. S., Ho C. S., Tan W. S., Lee C. T., Review on the renewable energy and solid waste management oilicies towards biogas development in Malaysia, Renewable ad sustainable energy review, pp. 988-998, (2017)
  • [9] Suseno S. H., Determination of extraction temperature and period of fish oil from Tilapia by using wet rendering, KnE Life Science, pp. 125-135, (2013)
  • [10] Suseno S.H, Nurjanah Yoshiara, Saraswati, Determination of extraction temperature and period of fish oil from Tilapia (Oreochromis Niloticus) by product using wet rendering method, KnE Life Science, pp. 126-135, (2015)
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