Low Chlorine Fuel Pellets Production from the Mixture of Hydrothermally Treated Hospital Solid Waste, Pyrolytic Plastic Waste Residue and Biomass

Md Tanvir Alam, Jang-Soo Lee, Sang-Yeop Lee, Dhruba Bhatta, Kunio Yoshikawa and Yong-Chil Seo
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Md Tanvir Alam: Department of Environmental Engineering, Yonsei University, Wonju, Gangwon-do 26493, Korea
Jang-Soo Lee: Department of Environmental Engineering, Yonsei University, Wonju, Gangwon-do 26493, Korea
Sang-Yeop Lee: Department of Environmental Engineering, Yonsei University, Wonju, Gangwon-do 26493, Korea
Dhruba Bhatta: Department of Environmental Engineering, Yonsei University, Wonju, Gangwon-do 26493, Korea
Kunio Yoshikawa: School of Environment and Society, Tokyo Institute of Technology, Midori-Ku, Yokohama 226-8502, Japan
Yong-Chil Seo: Department of Environmental Engineering, Yonsei University, Wonju, Gangwon-do 26493, Korea

Energies, 2019, vol. 12, issue 22, 1-17

Abstract: Thirteen types of fuel pellets were prepared from hydrothermally treated hospital solid waste, hydrothermally treated rice straw, pyrolytic plastic waste residue, rice straw, and Sakhalin fir residue using a flat die pellet machine. Different pellet properties such as pellet density, pellet durability, aspect ratio, physicochemical characteristics, and gross calorific value (GCV) were evaluated as well as compared concerning the European standard specification for residential/commercial densified fuels. In addition, the quality of pellets was compared with coal. The results showed that the pellets made only with hydrothermally treated hospital solid waste, hydrothermally treated rice straw, pyrolytic plastic waste residue, and rice straw failed to meet few individual criteria (<3 wt% ash content, <10 wt% moisture content, <0.03 wt% chlorine content, >96.5 wt% pellet durability, and >600 kg/m 3 pellet density) of the European standard specifications. However, most of the mixed fuel pellets satisfied the requirement of pellet properties according to the European standard specification. In particular, up to 16.70 wt% hydrothermally treated rice straw, 1.50 wt% hydrothermally treated hospital solid waste, and 4.76 wt% of pyrolytic plastic waste residue can be blended with Shakhalin fir residue to produce low-chlorine fuel pellets. The gross calorific value of pellets made from the mixture of hydrothermally treated wastes and pyrolytic plastic waste residue (around 22 MJ/kg) showed similar results to that of coal. In the case of mixed pellets, the presence of these hydrothermally treated wastes and pyrolytic plastic waste residue valorized the fuel pellet quality. The main outcome of this study was the production of low chlorine biomass fuel pellets of high gross calorific values blended with hydrothermally treated wastes and pyrolytic waste residues, which opens a new door for utilizing waste in a better way, especially hospital solid waste.

Keywords: hydrothermal treatment; pelletization; biomass; hospital solid waste; plastic waste (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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