Generating electrical energy through urban solid waste in Brazil: An economic and energy comparative analysis

Santos, Rafaela Ediene dos; Santos, Ivan Felipe Silva dos; Barros, Regina Mambeli; Bernal, Andressa Picionieri; Filho, Geraldo Lúcio Tiago; Silva, Fernando das Graças Braga da

doi:10.1016/j.jenvman.2018.10.015

Cited by 85 publications

(41 citation statements)

References 25 publications

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“…However, the construction and operation of technically sophisticated industrial facilities using MSW direct combustion are commercially unviable [21]. Moreover, electricity generation also requires extra investments in the development of new modifications of steam turbines, designed for relatively low parameters of water vapor [22,23]. Another technical problem, involving large investments, is strict flue gas cleaning requirements.…”

Section: Introductionmentioning

confidence: 99%

Switching Coal-Fired Thermal Power Plant to Composite Fuel for Recovering Industrial and Municipal Waste: Combustion Characteristics, Emissions, and Economic Effect

2020

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Combustion characteristics were studied experimentally for single droplets of fuel slurries based on wet coal processing waste with municipal solid waste components (cardboard, plastic, rubber, and wood) and used turbine oil. We established the ignition delay time for three various groups of fuel compositions in motionless air at 600–1000 °C. The minimum values are 3 s, and the maximum ones are 25 s. The maximum temperatures in the droplet vicinity reach 1300 °C during fuel combustion for compositions with 10% of used oil. The combustion temperatures of fuel compositions without oil are 200–300 °C lower. The concentrations of anthropogenic emissions in flue gases do not exceed those from dry coal combustion. Adding used oils to composite fuels reduces the concentrations of dioxins and furans in flue gases when municipal solid waste in the fuel burns out due to high combustion temperatures. Based on the experimental research findings, we have elaborated a strategy of combined industrial and municipal waste recovery by burning it as part of composite fuels, as illustrated by three neighboring regions of the Russian Federation with different industrial structures and levels of social development. This strategy suggests switching three typical coal-fired thermal power plants (one in each of the regions) to composite liquid fuel. It will reduce the hazard of waste to the environment and decrease the consumption of high-quality coals for power generation. Implementing the developed strategy for 25 years will save 145 Mt of coal and recover 190–260 Mt of waste. The positive economic effect, considering the modernization of fuel handling systems at thermal power plants and the construction of a fuel preparation plant, will make up 5.7 to 6.9 billion dollars, or 65–78%, respectively, of the main costs of three thermal power plants operating on coal within the identical period.

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Section: Introductionmentioning

confidence: 99%

Switching Coal-Fired Thermal Power Plant to Composite Fuel for Recovering Industrial and Municipal Waste: Combustion Characteristics, Emissions, and Economic Effect

2020

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“…The disposal of solid waste into landfills is a less preferred option in the waste management hierarchy. However, this unattractive methodology from an environmental and health prospective is globally dominant due to its economic feasibility (dos Santos, 2019).…”

Section: Introductionmentioning

confidence: 99%

Quantification of landfill gas generation and renewable energy potential in arid countries: Case study of Bahrain

et al. 2020

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Sustainable solid waste management can provide pathways for renewable energy generation. The Kingdom of Bahrain has witnessed burgeoning municipal solid waste (MSW) generation rate due to socio-economic development. The authorities of this Small Island Developing State, which is located in arid environment, plan to produce 5% of the total electricity demand from renewable energy sources by 2025 and then double it to 10% by 2035. The US Environmental Protection Agency’s Landfill Gas Emission Model software was used to estimate the generation of biogas from MSW at the Askar Landfill site. Results envisaged that maximum landfill gas (LFG) emission rates will be in 2020 following landfill closure by the end of 2019, as an intentional scenario, with a maximum electricity generation potential of 57.4 GWh that could provide power to 488 households. Revenues from carbon credits and electricity sales were US$97.8 million and US$64.8 million, respectively, for the period 2020–2035. The internal combustion engine exhibited the most viable option based on economic analysis of the cost of alternative LFG energy recovery technologies. Our work highlights the potential to use LFG-to-energy technologies to reduce the carbon footprint in arid climates for developing countries with substantial electricity subsidization.

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“…Nowadays, a proper management approach based on the sustainable development principles is that waste must be restored or reused as a potential source ( T. U. N. E. P. (UNEP), 2004 ; Dijkema et al., 2000 ; Seadon, 2010 ; Brunner and Rechberger, 2015 ; Leckner, 2015 ; Rogoff, 2013 ; Korhonen et al., 2003 ). To choose a proper waste management system, these ways were compared by different approaches such as life cycle assessment (LCA) ( Zhouet al., 2018 ; Liamsanguan and Gheewala, 2008a ) and economic analysis ( Santos et al., 2019 ). Zhou et al.…”

Section: Introductionmentioning

confidence: 99%

A comparison between a natural gas power plant and a municipal solid waste incineration power plant based on an emergy analysis

Yazdani

Salimipour

Moghaddam

2020

Journal of Cleaner Production

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This paper performs an emergy analysis (EmA) to compare two real power plants include a conventional natural gas steam power plant (NGPP) with one that burns municipal solid waste (MSWPP). For this purpose, the EmA is used to investigate the sustainability, renewability, environmental impacts, and economic issues. The capacity of the NGPP and MSWPP are 247.5 and 3 MW, respectively. Results from this study show that the percent of renewability (PR) and emergy sustainability index (ESI) of the MSWPP are much more than those of the NGPP. The PR and ESI of the MSWPP are 46.81 and 1.65, while for the NGPP are 5.01 and 0.05, respectively. It is proved that the MSWPP is more efficient and has the better environmental impacts compared to the NGPP. Moreover, a hypothetical MSWPP with the same electricity output of the NGPP is studied using the EmA. A more efficient system with the higher PR and ESI is observed compared to the other case studies. Beside of these advantages, use of the MSW has other benefits such as reducing the greenhouse gases released in the atmosphere, saving fossil fuels, low land area required compared to the landfill, speed and ease of disposal, and production of clean and useful ash.

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Generating electrical energy through urban solid waste in Brazil: An economic and energy comparative analysis

Cited by 85 publications

References 25 publications

Switching Coal-Fired Thermal Power Plant to Composite Fuel for Recovering Industrial and Municipal Waste: Combustion Characteristics, Emissions, and Economic Effect

Switching Coal-Fired Thermal Power Plant to Composite Fuel for Recovering Industrial and Municipal Waste: Combustion Characteristics, Emissions, and Economic Effect

Quantification of landfill gas generation and renewable energy potential in arid countries: Case study of Bahrain

A comparison between a natural gas power plant and a municipal solid waste incineration power plant based on an emergy analysis

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