Energy Potential of Municipal Solid Wastes

Dölgen, Deniz; Sarptaş, Hasan; Alpaslan, N.; Kucukgul, Orhan

doi:10.1080/009083190523820

Cited by 24 publications

(16 citation statements)

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“…The thermal process not only reduces the volume of the waste, but also utilizes its energy content to produce superheated steam, which in turn can be used in the industrial and residential applications, including district heating system, electricity generation for internal use (e.g., space heating and lighting) and for external sale, combined heat and power, or combined heat, cooling and power. Although the energy use of municipal solid waste (MSW) can be recovered from landfill gas [1], the reuse of waste heat from MSW incineration can be considered as a power source to reduce fossil fuel use and mitigate the emissions of greenhouse gases (GHG), especially in carbon dioxide (CO 2 ) and methane (CH 4 ). As a result, the incineration process with waste-to-energy (WTE) system will reduce GHG emissions from the industrial sector, which uses about 40 % of worldwide energy [2].…”

Section: Introductionmentioning

confidence: 99%

Analysis of municipal solid waste incineration plants for promoting power generation efficiency in Taiwan

Tsai

2014

J Mater Cycles Waste Manag

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Taiwan is a developed nation with approximately 98 % of its energy supplied by imported fuels. In this regard, the efficient energy utilization of municipal solid waste (MSW) is thus becoming attractive in Taiwan because the production of electricity from this source in 2012 has increased to 3,057 GWh, of which 2,350 GWh, or 76.8 %, was connected to the public grid system with the revenues of US$ 154 million. According to the official statistics on the operation status of MSW incineration plants with design capacity of over 300 ton/day in Taiwan, a preliminary analysis of power generation efficiencies for 24 large-scale MSW incineration plants was carried out in the paper. It showed that the energy efficiencies of MSW incineration plants in Taiwan were relatively low with a gross value of 16.2 % in recent years (2008)(2009)(2010)(2011)(2012). This meant that a majority of produced heat was discharged into the atmosphere without efficient recovery. As a consequence, the central competent authority in Taiwan is currently planning a promotion policy for combining the district heating and cooling system with waste heat from all MSW incineration plants, which aims at a 30 % increase in the overall energy efficiency.

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Section: Introductionmentioning

confidence: 99%

Analysis of municipal solid waste incineration plants for promoting power generation efficiency in Taiwan

Tsai

2014

J Mater Cycles Waste Manag

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“…The calorific value is influenced by waste composition and characteristics such as moisture and combustible content, as shown in Table 1, which makes the energy potential vary from one country to another. For the MSW to be suitable for combustion the overall LCV should always be at least between 6 -7 MJ/kg [12]. In the case of coal fuel, a typical value is approximately 30 MJ/kg while for oil; the value is about 40 MJ/kg.…”

Section: Introductionmentioning

confidence: 99%

“…These values can be compared with that for MSW of about 10 MJ/kg, which has increased about 20% since the early 1970s, because of factors such as the decreasing quantity of ash in the waste from coal fires, and the increasing Open Access Library Journal proportion of dry packing material [10]. Table 1 shows the typical ash and water free CVs (Hawf) of solid waste components, and Equation 1shows how the LCV is calculated when Hawf is known [12]. Equation 1shows that the LCV increases with increase in the combustible fraction and decreases if the moisture content increases.…”

Section: Introductionmentioning

confidence: 99%

“…Maintaining the LCV is therefore crucial in ensuring a stable energy output. Analysis by [12] and [13] produced results that show the typical theoretical energy potential of 1 kg of various components of MSW as shown in Table 1. For every 1kg of food and organic waste, 0.718 kWh of electrical energy could be produced, which will amount to 17.24 kWh per day (24 hours).…”

Section: Introductionmentioning

confidence: 99%

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Assessment of the Energy Potential of Municipal Solid Waste (MSW) in Freetown, Sierra Leone

Ngegba¹,

Bertin²

2020

OALib

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Electricity supply in Freetown has been unreliable partly due to lack of sustainable alternative generation sources, and the city is beset by poor waste management system, which has led to indiscriminate waste disposal since the end of the country's civil war in 2002, contributing to air and water pollution. This necessitates the need for research and development on Waste-to-Energy (WtE) technologies. Waste generation was estimated using population data from Statistics Sierra Leone (SSL), and analysed using reasonable assumptions and theories based on previous studies, and information on waste generation per capita was collected from publications and grey literatures. Energy potential was estimated from the amount of waste by component and their fuel characteristics to calculate the Lower Calorific Value (LCV) for each waste category. The weighted LCV of each waste component was then calculated and added to get the LCV of the overall waste stream. The study revealed that with the population of Freetown estimated at about 1,200,000, and a waste generation per capita per day of 0.5 kg, at least 600 metric tons of waste could be generated per day or 219,000 metric ton of waste annually. About 83% of this waste is combustible, and with an overall (LCV) of 6.4 MJ/kg, the energy potential was estimated at 398.2 kWh per ton of waste, (enough to meet the electricity needs of about 50 Freetown homes in one day). This result could inform policy makers and developers that the energy sector of Sierra Leone and other developing countries with similar waste characteristics could be diversified by utilising waste resources.

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“…The energy output of such installations is considered as a Renewable Energy Source (RES) and contributes to the conservation of natural resources, reduces the needs for new conventional power stations and provides security of energy supply (Cheng and Hu, 2010), while a new market is being created amid an international economic crisis. Furthermore, the final amount of wastes delivered to landfills is minimized and the corresponding pollution related to all stages of treatment is significantly reduced (Dolgen et al, 2005;Haley, 1990). In this context, the selection of the appropriate strategy for energy recovery by the utilization of MSW depends mostly on the quantity and composition of wastes, the moisture content, the current legislation, geopolitical and climate conditions, the ease of MSW transportation, the exploitation of the products downstream the processes, the initial and operational cost of the plants, the energy balance of each country and the mass and energy balance of the methods adopted (Cherubini et al, 2008;Consogni et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Multicriteria analysis of municipal solid wastes energy recovery technologies in Greece

2013

Global NEST Journal

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Municipal Solid Waste (MSW) management is the field of science which explores and evolves strategies minimizing the final amount of wastes delivered to landfills and reducing the corresponding pollution related to all stages of treatment and collection. In the best practices of MSW the inherent energy of wastes is being recovered. In this study, the most appropriate energy recovery methods utilizing MSW for Greece (i.e. Sorting plant at landfill site with biogas recovery and RDF production, Incineration of MSW with small pre-treatment and Controlled landfill site with biogas recovery) are investigated based on the composition of wastes, the compatibility of the methods with the EU legislation, their technical availability, energy recovery capacity and contribution to the national energy balance, as well as economic issues, the maturity of the technologies involved and the land occupation requirements. A detailed multi-criteria analysis is applied considering the expected MSW production of Greece until 2020 along with different scenarios of waste utilization. Based on the results obtained, as well as on the elaboration of a sensitivity analysis, the "Controlled landfill" method is designated as the most prevalent energy recovery method for Greece, although under specific prioritization of the main parameters involved, the "Incineration" may be equally appropriate as well. KEYWORDS: energy recovery from MSW, Waste-to-Energy plants, incineration of MSW, sorting plant at landfill site, controlled landfill sites. INTRODUCTIONThe increment of Municipal Solid Wastes (MSW) production worldwide in association with the continuously growing concentration of chemical components in the wastes (Mahar et al., 2009) and the storage problems involved, have indicated the need for the implementation of more effective MSW treatment strategies (Sakkas et al., 2005;Konstantinidis et al., 2000). Furthermore, in the best MSW management practice, a considerable percentage of the energy consumed during the manufacturing process of the products (Cherubini et al., 2008) may be retrieved and exploited. The energy output of such installations is considered as a Renewable Energy Source (RES) and contributes to the conservation of natural resources, reduces the needs for new conventional power stations and provides security of energy supply (Cheng and Hu, 2010), while a new market is being created amid an international economic crisis. Furthermore, the final amount of wastes delivered to landfills is minimized and the corresponding pollution related to all stages of treatment is significantly reduced (Dolgen et al., 2005; Haley, 1990). In this context, the selection of the appropriate strategy for energy recovery by the utilization of MSW depends mostly on the quantity and composition of wastes, the moisture content, the current legislation, geopolitical and climate conditions, the ease of MSW transportation, the exploitation of the products downstream the processes, the initial and operational cost of the plants, the energy balance of...

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Energy Potential of Municipal Solid Wastes

Cited by 24 publications

References 1 publication

Analysis of municipal solid waste incineration plants for promoting power generation efficiency in Taiwan

Analysis of municipal solid waste incineration plants for promoting power generation efficiency in Taiwan

Assessment of the Energy Potential of Municipal Solid Waste (MSW) in Freetown, Sierra Leone

Multicriteria analysis of municipal solid wastes energy recovery technologies in Greece

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