Effect of storage conditions on the calorific value of municipal solid waste

Nzioka, Antony Mutua; Hwang, Hyeon-Uk; Kim, Myung-Gyun; Yan, Cao; Lee, Chang‐Soo; Kim, Young‐Ju

doi:10.1177/0734242x17715100

Cited by 6 publications

(5 citation statements)

References 14 publications

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“…In this research, we used combustible materials and excluded all possible inert materials (glass, soil, metals etc.) We prepared two sets of samples as shown in Table 1 based on other references [5], [10], [11]. The particle size of sample MSW was <20 mm recommended by Athanaopolous [12], and reference [13]providedmathematical formulation for determining theparticle size of our sample MSW.…”

Section: Methodsmentioning

confidence: 99%

“…We used ASTM E955 -88 standards to determine ash content on "dry material"basis [14]. References [4], [5] provided formula for calculating the bulk density for "as-received" MSW. We calculated the gross calorific values using bomb calorimeter (plain-jacket oxygen bomb-type, Parr Instrument Company-USA).…”

Section: Methodsmentioning

confidence: 99%

“…One of the perspective solutions is thermal conversion processes which may such processes such as pyrolysis, wasteto-energy, aerobic/anaerobic conversion processes among others [1]- [4]. Previous research showed that recycling and conversion of MSW with high moisture content to refuse derived fuel is feasible and may require minimal treatment [1], [5], [6].…”

Section: Introductionmentioning

confidence: 99%

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Kinetic study of the thermal decomposition for mixed municipal solid waste using thermogravimetric analysis

Nzioka

Ouma²,

Atieno³

2017

PEN

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Thermal conversion of wastes is one of theperspectivesolution to 'municipal solid waste' problem. Thermal conversion process entails thermal decomposition of material with an increase in temperature. This experimental analysis investigated thermal decomposition of municipal solid waste using thethermogravimetric technique. The objective of the analysis was to analyze the changes in kinetic characteristics with changes in thecomposition of content in sample waste and temperature. Sample waste analyzed consisted of plant organic waste, paper, plastics, wood and inert substance. Proximate and elemental analyses were determined and calorific values determined experimentally using bomb calorimeter. Thermogravimetric curves were derived using thermogravimetric analyzer (TGA) at different temperature rates. Activation energy and preexponential factor were derived using Flynn-WallOzawa, KissingerAkahiraSunose and Kissinger model equations. Additional statistical analyses of variance using ANOVA was conducted for the different sets of composition analyzed. Results showed kinetic parameter values for different modelfree models used in analysis as well as the level of variance in activation energies for different composition of waste and temperature rates used.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Kinetic study of the thermal decomposition for mixed municipal solid waste using thermogravimetric analysis

Nzioka

Ouma²,

Atieno³

2017

PEN

Self Cite

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“…Calorific values of plant samples were estimated by Parr Oxygen Bomb calorimeter. 9,10 The dried weighted pellets of plants were placed in the ignition cup of the bomb with the help of a nickel-chromium fuse wire. Further, the whole setup of Parr Oxygen Bomb calorimeter is submerged in water with 13-15 atmospheric pressure keeping the volume of water constant (1300mL) during the complete combustion process.…”

Section: Estimation Of Calorific Valuesmentioning

confidence: 99%

Calorific Values and Energy Structure of Different Parts of Three Varieties of Dolichos Biflorus L.In Jharkhand

Kumar¹,

Kumar

Sinha

2022

Int J Life Sci Pharm Res

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Dolichos biflorus L. is commonly known as Horse gram and Kulthi in Hindi. It belongs to family Fabaceae. The seeds of Dolichos biflorus have several medicinal properties; anthelmintic, diaphoretic, diuretic, etc. as a well-enriched source of protein and energy. The calorific value and energy structure of Dolichos biflorus vary among the species. In this study, our aim was to evaluate the varieties of Kulthi for their better adaption and cultivation in the agro-climatic condition of Hazaribag, Jharkhand. Further, the variation in energy content of these varieties in the above agro-climatic condition. We have collected three varieties of Kulthi (Birsa Kulthi-1 to 3) for this study and followed for 105 days, to evaluate the energy content at different time intervals. We observed these three varieties of Kulthi are different in the relative amount of energy storage at maturity. However, all these three studied varieties of Kulthi (Birsa Kulthi-1 ,Birsa Kulthi-2 ,Birsa Kulthi -3) are ecologically suitable for cultivation in the vicinity of the agro-climatic condition of Hazaribagh, Jharkhand, India.

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“…Most of the work is based on results of experimental studies of the composition and properties of excavated landfill materials and the assessment of its resource potential. Part of the projects [15,16] presents the results of studies focused on physicochemical processes that occur during biodegradation of waste in the landfill body.…”

Section: Introductionmentioning

confidence: 99%

Energy Potential Assessment of Excavated Landfill Material: A Case Study of the Perm Region, Russia

et al. 2022

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The paper presents results of field and laboratory studies of thermal characteristics to excavated landfill waste in Perm region, Russia. The peculiarity of the study includes the following aspects: waste composition with a high share of polymers, the climatic conditions of the territory and the lack of engineering infrastructure at the waste disposal facility. When determining the waste composition and thermal properties of waste, it is proposed to include a stage of removal of contamination from landfilled waste fraction, since their share of contamination can reach up to 33%. This stage will allow researchers to adjust the net calorific value of the excavated waste without overestimation, which may affect decision-making when implementing waste management technology. Among combustible components with the highest moisture content are waste paper (69.1%) and diapers (65.8%), whereas wood (11.2%), PET bottles (3.1%) and other 3D plastics (13.4%) have rather low ash content on a dry basis. Calculation of thermal properties and analysis of the energy potential of the waste samples was conducted based on the obtained data. The calorific value of the individual components and excavated waste depends not only on the moisture and ash content of the individual components, but also on the presence of contaminants. The average net calorific value of the excavated waste is 4.9 MJ/kg, and for the separate mixture of combustible components, it is 7.5 MJ/kg at a moisture content of 44%. Excavated landfill waste can be regarded as a resource for the manufacture of secondary fuel only after pretreatment that includes at least sorting and drying. The results of this study may be useful in developing technologies needed to eliminate old MSW dumps and old landfills, for the development of the concept of circular economy and prevention of environmental degradation problems.

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Effect of storage conditions on the calorific value of municipal solid waste

Cited by 6 publications

References 14 publications

Kinetic study of the thermal decomposition for mixed municipal solid waste using thermogravimetric analysis

Kinetic study of the thermal decomposition for mixed municipal solid waste using thermogravimetric analysis

Calorific Values and Energy Structure of Different Parts of Three Varieties of Dolichos Biflorus L.In Jharkhand

Energy Potential Assessment of Excavated Landfill Material: A Case Study of the Perm Region, Russia

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