Hybrid porous media gasification of urban solid waste pre-treated by hydrothermal carbonization

Global population growth and rising consumption levels have significantly increased resource use and energy demand, leading to higher greenhouse gas concentrations and increased waste output. As a result, alternative waste treatment methods for sustainable municipal solid waste (MSW) management are...

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Bibliographic Details
Published in:PloS one 2023-09, Vol.18 (9), p.e0291838-e0291838
Main Authors: Vallejo, Fidel, Díaz-Robles, Luis, Carné-Seco, Valentina, Pino-Cortés, Ernesto, Espinoza-Pérez, Andrea, Espinoza-Pérez, Lorena
Format: Article
Language:English
Subjects:
Alternative energy sources
Biomass
Carbon dioxide
Carbonization
Ceramic fibers
Combustion
Combustion temperature
Efficiency
Energy demand
Engineering and Technology
Environmental impact
Filtration
Gasification
Greenhouse effect
Greenhouse gases
Hydrogen
Maximum temperatures
Municipal solid waste
Municipal waste management
Physical Sciences
Population growth
Porous media
Raw materials
Renewable resources
Sludge
Solid waste management
Solid wastes
Sustainable yield
Urban waste
Waste materials
Waste treatment
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Summary:Global population growth and rising consumption levels have significantly increased resource use and energy demand, leading to higher greenhouse gas concentrations and increased waste output. As a result, alternative waste treatment methods for sustainable municipal solid waste (MSW) management are crucial. This research evaluates the efficiency of integrating hydrothermal carbonization (HTC) and gasification for an optimized MSW biomass blend. HTC was conducted for one hour at 220°C in a 5 L reactor, followed by gasification in a hybrid porous medium gasifier. The study investigated the effects of different filtration speeds on combustion temperature and hydrogen concentrations. The results showed that a filtration speed of 35 cm/s resulted in a maximum combustion temperature of 1035.7°C. The temperature remained consistent across filter speeds, while higher velocities yielded higher hydrogen concentrations. Additionally, increasing the filtration velocity raised temperatures in the hybrid bed while increasing the volumetric fraction of biomass decreased maximum temperatures. This research contributes to the understanding of merging HTC and gasification for MSW biomass blend treatment, aiming to reduce environmental impacts and costs while promoting renewable resources for long-term energy production.
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0291838