Anaerobic digestion of organic waste in Japan: the first demonstration plant at Kyoto City

2002 ◽  
Vol 45 (12) ◽  
pp. 113-118 ◽  
Author(s):  
T. Komatsu ◽  
T. Kimura ◽  
Y. Kuriyama ◽  
Y. Isshiki ◽  
T. Kawano ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Energy Recovery ◽  
Organic Waste ◽  
Yard Waste ◽  
Kyoto City ◽  
Demonstration Plant

Recycling of Municipal Solid Waste is vigorously promoted in Japan and the necessity of energy recovery from organic waste is increasing. An anaerobic digestion demonstration plant for organic waste in Kyoto City, Japan has been operated for about two years. Three kinds of wastes (garbage and leftovers from hotels, yard waste and used paper) mixed at various ratios are used. The plant has maintained stable operations with each mixture, generating biogas by the decomposition of VS at the rate of about 820 m3N/ton-VS.

scholarly journals The Municipal Solid Waste Management System with Anaerobic Digestion

Energies ◽  
2021 ◽  
Vol 14 (8) ◽  
pp. 2067
Author(s):  
Przemysław Seruga
Keyword(s):  
Anaerobic Digestion ◽  
Waste Management ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Energy Recovery ◽  
Dry Matter ◽  
Positive Impact ◽  
Treatment Plant ◽  
Municipal Solid Waste Management ◽  
Stream Management

This study investigated the applied methods for the collection and treatment of an organic fraction of municipal solid waste with anaerobic digestion (AD), including the effects of selective waste collection system introduction. As the research area, data from a waste treatment plant, which collects waste from about 260,000 inhabitants, was used as the selected waste management plan. Biowaste stream management was emphasized. Thus, research on energy recovery and the characteristics of digestate (nutrient and heavy metals content) obtained from biowaste AD was performed. The results of the studies and their quantitative data were interpreted. A significant discrepancy between the assumptions and the actual situation was revealed (up to 20% year-on-year regarding biowaste). An underestimation of the amount of waste when planning was noted. AD ensures energy recovery from biowaste, which can cover facility electricity needs and material recovery. The digestate might find agricultural usage and become an ecological product. The content of nitrogen (1.5%dry matter), phosphorus (0.55%dry matter), potassium (1.0%dry matter), and organic carbon (16.0%dry matter) indicate a positive impact on crops. Furthermore, it can improve the economic balance, by replacing costs with sales revenues.

scholarly journals Implementing polyhydroxyalkanoates production to anaerobic digestion of organic fraction of municipal solid waste to diversify products and increase total energy recovery

2020 ◽  
Vol 318 ◽  
pp. 124270
Author(s):  
Gabriella Papa ◽  
Tommy Pepè Sciarria ◽  
Arianna Carrara ◽  
Barbara Scaglia ◽  
Giuliana D'Imporzano ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Municipal Solid Waste ◽  
Total Energy ◽  
Solid Waste ◽  
Energy Recovery ◽  
Organic Fraction

scholarly journals Comparison of biogas production obtained from samples of Mitú and Sibundoy municipal solid waste

2019 ◽  
Vol 39 (2) ◽  
Author(s):  
Kelly Marcela Triana Jiménez ◽  
Mario Enrique Velasquez
Keyword(s):  
Anaerobic Digestion ◽  
Moisture Content ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Organic Waste ◽  
Biogas Production ◽  
Calorific Value ◽  
Electrical Energy ◽  
Biological Sludge ◽  
Calorific Power

This  study  compares  the  calorific  power  of  biogas  obtained  from  the  municipal  solid  waste  (MSW)of  two  towns  in  Colombia,whose populations are affected by deficiencies in the supply of electricity.  The production of biogas would represent an importantopportunity to meet these needs, taking advantage of the solid waste generated, in whose composition organic material predominates(45 %).  For this purpose, MSW samples were taken from the municipalities of Mitú (Vaupés) and Sibundoy (Putumayo), in orderto establish their relevance to produce biogas.  For each sample, the organic waste was characterized in terms of its macroscopiccomposition, moisture content, ash, volatile and total solids.  Subsequently, the composition of biogas obtained was determinedfrom anaerobic digestion tests with biological sludge as inoculum in different proportions and the calorific value of the gas wascalculated.   It was found that organic waste from both municipalities is suitable to produce biogas due to the physicochemicalcharacteristics of the samples, the high methane content generated and, therefore, the satisfactory calorific power for its use in theproduction of electrical energy.

scholarly journals Energy recovery from biowaste: influence of hydraulic retention time on biogas production in dry-anaerobic digestion

2021 ◽  
Vol 238 ◽  
pp. 01007
Author(s):  
Elena Rossi ◽  
Isabella Pecorini ◽  
Renato Iannelli
Keyword(s):  
Anaerobic Digestion ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Retention Time ◽  
Energy Recovery ◽  
Hydraulic Retention Time ◽  
Flow Reactor ◽  
Biogas Production ◽  
Organic Fraction ◽  
Dry Anaerobic Digestion

The hydraulic retention time (HRT) is a key parameter in dry-anaerobic digestion to set during the reactor configuration in order to achieve the optimal biogas production. For this reason, the study compared the results of two experimental tests operating with an HRT of 23 and 14 days. During the tests, the feedstock was organic fraction of municipal solid waste with a solid content of 33% and the digester was a pilot-scale plug-flow reactor operating in thermophilic condition. The highest specific biogas production of 311.91 Nlbiogas kg-1 d-1 was achieved when the HRT was set to 23 days. On the contrary, the highest methane production rate of 1.43 NlCH4 l-1 d-1 was achieved for an HRT of 14 days. In addition, the volatile solids removal (49.15% on average) and the energy content o(4.8 MJ kg-1 on average) were higher for HRT 23 days than for HRT14 days. The results indicated that in dry-anaerobic digestion of organic fraction of municipal solid waste, 23 days is a suitable HRT for energy recovery.

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