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Author:

Brigagão, George Victor (Brigagão, George Victor.) | de Medeiros, José Luiz (de Medeiros, José Luiz.) | Araújo, Ofélia de Queiroz F (Araújo, Ofélia de Queiroz F.) | Mikuli, Hrvoje (Mikuli, Hrvoje.) | Dui, Neven (Dui, Neven.)

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Abstract:

Landfill-gas basically consists of methane and carbon dioxide and its reclamation is mandatory for better waste utilization and low greenhouse-gas emissions to transition towards renewable-energy matrices. Power generation or landfill-gas-to-wire is a solution for landfill-gas utilization with electricity-supply benefits skipping complex purification/transportation steps. As municipal solid-waste is rich in biomass, landfill-gas-fired power generation, with carbon capture and sequestration, leads to negative emissions and, consequently, climate-change mitigation. This work investigates the feasibility of zero-emission landfill-gas-to-wire concepts with oxyfuel carbon sequestration against conventional landfill-gas-fired plant facing carbon charges. Economic analysis is supported by Aspen-HYSYS simulation assuming large-scale landfill-gas supply. Different gas-turbine pressure-ratios are economically sought for both conventional and oxyfuel power plants to establish most profitable configurations. The greatest net values of conventional and oxyfuel plants are respectively attained for combustion pressures around 8 and 20 bar. This indicates investment and compression costs pulling down gas-turbine pressure-ratio in the landfill-gas combined-cycle plant. At such conditions, carbon dioxide is captured at 0.875 kg/kWh entailing oxyfuel efficiency penalty of 9.2% based on landfill-gas lower heating value, and increasing the long-term break-even electricity price from US$36/MWh to US$104/MWh. Economic superiority of zero-emission oxyfuel-combined-cycle over conventional plant occurs for carbon taxes above US$95/t. © 2020 Elsevier Ltd

Keyword:

Air pollution Air purification Biogas Biomass Calorific value Carbon capture Carbon dioxide Carbon dioxide process Climate change Combined cycle power plants Economic analysis Electric power generation Energy policy Gas emissions Gas turbine power plants Gas turbines Greenhouse gases Investments Land fill Municipal solid waste Waste incineration Wire

Author Community:

  • [ 1 ] [Brigagão, George Victor]Escola de Química, Federal University of Rio de Janeiro, CT, E, Ilha do Fundão, Rio de Janeiro; RJ; 21941-909, Brazil
  • [ 2 ] [de Medeiros, José Luiz]Escola de Química, Federal University of Rio de Janeiro, CT, E, Ilha do Fundão, Rio de Janeiro; RJ; 21941-909, Brazil
  • [ 3 ] [Araújo, Ofélia de Queiroz F.]Escola de Química, Federal University of Rio de Janeiro, CT, E, Ilha do Fundão, Rio de Janeiro; RJ; 21941-909, Brazil
  • [ 4 ] [Mikuli, Hrvoje]Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, Luciceva 5, Zagreb; HR-10000, Croatia
  • [ 5 ] [Mikuli, Hrvoje]MOE Key Laboratory of Thermo-Fluid Science and Engineering, Xi'an Jiaotong University, Xianning Western Road 28#, Xi'an; 710049, China
  • [ 6 ] [Dui, Neven]Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, Luciceva 5, Zagreb; HR-10000, Croatia

Reprint Author's Address:

  • [Mikuli, Hrvoje]Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, Luciceva 5, Zagreb; HR-10000, Croatia;;[Mikuli, Hrvoje]MOE Key Laboratory of Thermo-Fluid Science and Engineering, Xi'an Jiaotong University, Xianning Western Road 28#, Xi'an; 710049, China;;

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Source :

Renewable and Sustainable Energy Reviews

ISSN: 1364-0321

Year: 2021

Volume: 138

1 4 . 9 8 2

JCR@2020

ESI Discipline: ENGINEERING;

ESI HC Threshold:30

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count: 5

SCOPUS Cited Count: 25

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 9

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