An evaluation of the potential of waste to energy technologies for residual solid waste in New South Wales, Australia

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Abstract

The state of New South Wales (NSW) accommodates the largest population in Australia and is responsible for more than one-third of all waste generated in the country. An effective and economical waste management can be achieved by using waste to energy (WtE) technologies to manage residual wastes and produce energy. The aim of this study was to investigate the potential of the WtE technologies for energy recovery and greenhouse gas (GHG) emission reduction in NSW. In this study, major streams of wastes (municipal solid waste, commercial & industrial waste, construction & demolition waste) in NSW were classified into combustible, non-combustible and food organic waste. Four waste management scenarios using different combinations of WtE technologies, such as landfilling with energy recovery, incineration and anaerobic digestion (AD) were applied to evaluate electricity generation and GHG emission potentials from all these wastes. The results indicated that by employing a combination of incineration and AD for combustible and food parts of residual waste in NSW about 4165 GWh of electricity could be generated annually, which is equivalent to about 5.9% of the total electricity generation in NSW. This conversion of WtE leads to a reduction of about 1.7 million tonnes of GHG emissions annually. In this way, about 3 million tonnes of residual waste could be diverted from landfills in NSW annually which would offer approximately 50% reduction in landfilled waste by weight. Findings of the study showed that employing incineration and AD technologies could exploit a considerable amount of energy from residual waste and mitigate GHG emissions. Furthermore, employing efficient WtE technologies would divert organic waste out of landfills, avoiding emissions from landfills and will contribute to a greater share of renewable energy production, thereby reducing emissions from fossil fuel power plants.

LanguageEnglish
Article number109398
Number of pages12
JournalRenewable and Sustainable Energy Reviews
Volume115
DOIs
Publication statusPublished - Nov 2019

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Solid wastes
Gas emissions
Greenhouse gases
Waste incineration
Anaerobic digestion
Land fill
Electricity
Waste management
Fossil fuel power plants
Recovery
Demolition
Municipal solid waste
Industrial wastes

Keywords

  • Waste to energy
  • Sustainable waste management
  • Municipal solid waste
  • LCA
  • Incineration
  • Anaerobic digestion

Cite this

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title = "An evaluation of the potential of waste to energy technologies for residual solid waste in New South Wales, Australia",
abstract = "The state of New South Wales (NSW) accommodates the largest population in Australia and is responsible for more than one-third of all waste generated in the country. An effective and economical waste management can be achieved by using waste to energy (WtE) technologies to manage residual wastes and produce energy. The aim of this study was to investigate the potential of the WtE technologies for energy recovery and greenhouse gas (GHG) emission reduction in NSW. In this study, major streams of wastes (municipal solid waste, commercial & industrial waste, construction & demolition waste) in NSW were classified into combustible, non-combustible and food organic waste. Four waste management scenarios using different combinations of WtE technologies, such as landfilling with energy recovery, incineration and anaerobic digestion (AD) were applied to evaluate electricity generation and GHG emission potentials from all these wastes. The results indicated that by employing a combination of incineration and AD for combustible and food parts of residual waste in NSW about 4165 GWh of electricity could be generated annually, which is equivalent to about 5.9{\%} of the total electricity generation in NSW. This conversion of WtE leads to a reduction of about 1.7 million tonnes of GHG emissions annually. In this way, about 3 million tonnes of residual waste could be diverted from landfills in NSW annually which would offer approximately 50{\%} reduction in landfilled waste by weight. Findings of the study showed that employing incineration and AD technologies could exploit a considerable amount of energy from residual waste and mitigate GHG emissions. Furthermore, employing efficient WtE technologies would divert organic waste out of landfills, avoiding emissions from landfills and will contribute to a greater share of renewable energy production, thereby reducing emissions from fossil fuel power plants.",
keywords = "Waste to energy, Sustainable waste management, Municipal solid waste, LCA, Incineration, Anaerobic digestion",
author = "B. Dastjerdi and V. Strezov and R. Kumar and M. Behnia",
year = "2019",
month = "11",
doi = "10.1016/j.rser.2019.109398",
language = "English",
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journal = "Renewable and Sustainable Energy Reviews",
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AU - Kumar, R.

AU - Behnia, M.

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N2 - The state of New South Wales (NSW) accommodates the largest population in Australia and is responsible for more than one-third of all waste generated in the country. An effective and economical waste management can be achieved by using waste to energy (WtE) technologies to manage residual wastes and produce energy. The aim of this study was to investigate the potential of the WtE technologies for energy recovery and greenhouse gas (GHG) emission reduction in NSW. In this study, major streams of wastes (municipal solid waste, commercial & industrial waste, construction & demolition waste) in NSW were classified into combustible, non-combustible and food organic waste. Four waste management scenarios using different combinations of WtE technologies, such as landfilling with energy recovery, incineration and anaerobic digestion (AD) were applied to evaluate electricity generation and GHG emission potentials from all these wastes. The results indicated that by employing a combination of incineration and AD for combustible and food parts of residual waste in NSW about 4165 GWh of electricity could be generated annually, which is equivalent to about 5.9% of the total electricity generation in NSW. This conversion of WtE leads to a reduction of about 1.7 million tonnes of GHG emissions annually. In this way, about 3 million tonnes of residual waste could be diverted from landfills in NSW annually which would offer approximately 50% reduction in landfilled waste by weight. Findings of the study showed that employing incineration and AD technologies could exploit a considerable amount of energy from residual waste and mitigate GHG emissions. Furthermore, employing efficient WtE technologies would divert organic waste out of landfills, avoiding emissions from landfills and will contribute to a greater share of renewable energy production, thereby reducing emissions from fossil fuel power plants.

AB - The state of New South Wales (NSW) accommodates the largest population in Australia and is responsible for more than one-third of all waste generated in the country. An effective and economical waste management can be achieved by using waste to energy (WtE) technologies to manage residual wastes and produce energy. The aim of this study was to investigate the potential of the WtE technologies for energy recovery and greenhouse gas (GHG) emission reduction in NSW. In this study, major streams of wastes (municipal solid waste, commercial & industrial waste, construction & demolition waste) in NSW were classified into combustible, non-combustible and food organic waste. Four waste management scenarios using different combinations of WtE technologies, such as landfilling with energy recovery, incineration and anaerobic digestion (AD) were applied to evaluate electricity generation and GHG emission potentials from all these wastes. The results indicated that by employing a combination of incineration and AD for combustible and food parts of residual waste in NSW about 4165 GWh of electricity could be generated annually, which is equivalent to about 5.9% of the total electricity generation in NSW. This conversion of WtE leads to a reduction of about 1.7 million tonnes of GHG emissions annually. In this way, about 3 million tonnes of residual waste could be diverted from landfills in NSW annually which would offer approximately 50% reduction in landfilled waste by weight. Findings of the study showed that employing incineration and AD technologies could exploit a considerable amount of energy from residual waste and mitigate GHG emissions. Furthermore, employing efficient WtE technologies would divert organic waste out of landfills, avoiding emissions from landfills and will contribute to a greater share of renewable energy production, thereby reducing emissions from fossil fuel power plants.

KW - Waste to energy

KW - Sustainable waste management

KW - Municipal solid waste

KW - LCA

KW - Incineration

KW - Anaerobic digestion

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