scholarly journals Hydrothermal Upgrading of Korean MSW for Solid Fuel Production: Effect of MSW Composition

2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
Daegi Kim ◽  
Pandji Prawisudha ◽  
Kunio Yoshikawa
Keyword(s):  
Hydrothermal Treatment ◽  
Solid Fuel ◽  
Biological Treatment ◽  
Calorific Value ◽  
Fuel Production ◽  
High Moisture ◽  
Fixed Carbon ◽  
Food Residue ◽  
Before And After ◽  
Msw Composition

In Korea, municipal solid waste (MSW) treatment is conducted by converting wastes into energy resources using the mechanical-biological treatment (MBT). The small size MSW to be separated from raw MSW by mechanical treatment (MT) is generally treated by biological treatment that consists of high composition of food residue and paper and so forth. In this research, the hydrothermal treatment was applied to treat the surrogate MT residue composed of paper and/or kimchi. It was shown that the hydrothermal treatment increased the calorific value of the surrogate MT residue due to increasing fixed carbon content and decreasing oxygen content and enhanced the dehydration and drying performances of kimchi. Comparing the results of paper and kimchi samples, the calorific value of the treated product from paper was increased more effectively due to its high content of cellulose. Furthermore, the change of the calorific value before and after the hydrothermal treatment of the mixture of paper and kimchi can be well predicted by this change of paper and kimchi only. The hydrothermal treatment can be expected to effectively convert high moisture MT residue into a uniform solid fuel.

scholarly journals Hydrothermal Treatment of Dewatered Sewage Sludge Cake for Solid Fuel Production

2009 ◽  
Vol 4 (1) ◽  
pp. 68-77 ◽  
Author(s):  
Tomoaki NAMIOKA ◽  
Yoshiaki MOROHASHI ◽  
Ryosuke YAMANE ◽  
Kunio YOSHIKAWA
Keyword(s):  
Sewage Sludge ◽  
Hydrothermal Treatment ◽  
Solid Fuel ◽  
Fuel Production ◽  
Sludge Cake ◽  
Dewatered Sewage Sludge

Alternative Solid Fuel Production from Paper Sludge Employing Hydrothermal Treatment

2014 ◽  
Vol 28 (2) ◽  
pp. 1198-1206 ◽  
Author(s):  
Chinnathan Areeprasert ◽  
Peitao Zhao ◽  
Dachao Ma ◽  
Yafei Shen ◽  
Kunio Yoshikawa
Keyword(s):  
Hydrothermal Treatment ◽  
Solid Fuel ◽  
Paper Sludge ◽  
Fuel Production

scholarly journals Experimental Studies on Hydrothermal Treatment of Municipal Solid Waste for Solid Fuel Production

2021 ◽  
Vol 22 (9) ◽  
pp. 208-215
Author(s):  
Djaenudin Djaenudin ◽  
Dani Permana ◽  
Mahyar Ependi ◽  
Herlian Putra
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Hydrothermal Treatment ◽  
Solid Fuel ◽  
Experimental Studies ◽  
Fuel Production

scholarly journals Tapping Indonesia's bioenergy potential: Solid biofuel production from banana leaves by employing hydrothermal treatment

2016 ◽  
Author(s):  
Baskoro Lokahita ◽  
Anissa Nurdiawati ◽  
Alexander Mosqueda ◽  
Kunio Yoshikawa
Keyword(s):  
Moisture Content ◽  
Hydrothermal Treatment ◽  
Solid Fuel ◽  
Biomass Energy ◽  
Biofuel Production ◽  
High Moisture Content ◽  
High Moisture ◽  
Banana Plant ◽  
Solid Biofuel ◽  
Banana Leaves

Agricultural and agroindustrial wastes are increasingly being used for the generation of fuel products. Banana residues has a potential to be used as biomass energy sources in tropical country due to its availability, fast growing characteristic of banana plant, carbon neutrality and the fact that each banana plant bears only one stem of fruit. Thermal conversion of biomass to higher energy density fuels is gaining a growing interest as it is sustainable and has a potential to reduce greenhouse gasses. However, many forms of biomass in the waste stream, including banana residues, have very high moisture content, which makes them both inefficient to store, transport, and process using conventional technology. The hydrothermal treatment (HT) is known for converting high moisture content solid wastes into dried, uniform, pulverized, coallike solid fuel. In the present study, banana leaves was characterized and subjected to HT in a batch process to evaluate the suitability of these biomass sources for solid fuel production. Banana leaves was treated via HT at the temperatures of 180 and 200 ° C with the holding time of 30 min. The results showed that HT can increase the carbon and energy content of banana leaves, while the ash content decreased with the increased of temperature. The calculated value for theoretical potential power generation from treated banana leaves is 3.8 GW. These results showed that the production of solid fuel from banana leaves by employing hydrothermal treatment can contribute to the development of renewable energy, especially in Indonesia.

scholarly journals Energy and resource recovery from Tetra Pak waste using hydrothermal treatment

2017 ◽  
Author(s):  
Baskoro Lokahita ◽  
Fumitake Takahashi ◽  
Kunio Yoshikawa
Keyword(s):  
Hydrothermal Treatment ◽  
Solid Fuel ◽  
Calorific Value ◽  
Resource Recovery ◽  
Proximate Analysis ◽  
Fuel Temperature ◽  
High Quality ◽  
Tetra Pak ◽  
Fuel Characteristic ◽  
Full Separation

In this study, Tetra Brik from Tetra Pak Company was used to produce solid fuel. Tetra Brik consists of paper, LDPE, and Aluminum arranged in 6 different layers. Aluminum should be recovered to obtain high-quality solid fuel. Hydrothermal treatment was used to separate aluminum from the solid fuel. Temperature and time were controlled and observed to get the best result. The temperature was varied between 200 °C and 240 °C, while time was ranged from 0 and 60 minutes. The result showed that composite of aluminum and LDPE was formed in the process, and full separation occurred in the experiment other than 200 °C in 0 minutes. Ultimate and Proximate analysis were done to understand solid fuel characteristic. As the temperature and time got higher, the calorific value also increase.

scholarly journals Carbonized Solid Fuel Production from Polylactic Acid and Paper Waste Due to Torrefaction

Materials ◽  
2021 ◽  
Vol 14 (22) ◽  
pp. 7051
Author(s):  
Kacper Świechowski ◽  
Christian Zafiu ◽  
Andrzej Białowiec
Keyword(s):  
Activation Energy ◽  
Thermogravimetric Analysis ◽  
Municipal Solid Waste ◽  
Polylactic Acid ◽  
Solid Fuel ◽  
Reaction Order ◽  
Calorific Value ◽  
Fuel Production ◽  
Refuse Derived Fuel ◽  
Csf Production

The quantity of biodegradable plastics is increasing steadily and taking a larger share in the residual waste stream. As the calorific value of biodegradable plastic is almost two-fold lower than that of conventional ones, its increasing quantity decreases the overall calorific value of municipal solid waste and refuse-derived fuel which is used as feedstock for cement and incineration plants. For that reason, in this work, the torrefaction of biodegradable waste, polylactic acid (PLA), and paper was performed for carbonized solid fuel (CSF) production. In this work, we determined the process yields, fuel properties, process kinetics, theoretical energy, and mass balance. We show that the calorific value of PLA cannot be improved by torrefaction, and that the process cannot be self-sufficient, while the calorific value of paper can be improved up to 10% by the same process. Moreover, the thermogravimetric analysis revealed that PLA decomposes in one stage at ~290–400 °C with a maximum peak at 367 °C, following a 0.42 reaction order with the activation energy of 160.05 kJ·(mol·K)−1.

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