Solar-Powered Direct Air Capture: Techno-Economic and Environmental Assessment.
Environ Sci Technol
; 58(5): 2282-2292, 2024 Feb 06.
Article
em En
| MEDLINE
| ID: mdl-38270080
ABSTRACT
Direct air capture (DAC) of CO2 has gained attention as a sustainable carbon source. One of the most promising technologies currently available is liquid solvent DAC (L-DAC), but the significant fraction of fossil CO2 in the output stream hinders its utilization in carbon-neutral fuels and chemicals. Fossil CO2 is generated and captured during the combustion of fuels to calcine carbonates, which is difficult to decarbonize due to the high temperatures required. Solar thermal energy can provide green high-temperature heat, but it flourishes in arid regions where environmental conditions are typically unfavorable for L-DAC. This study proposes a solar-powered L-DAC approach and develops a model to assess the influence of the location and plant capacity on capture costs. The performed life cycle assessment enables the comparison of technologies based on net CO2 removal, demonstrating that solar-powered L-DAC is not only more environmentally friendly but also more cost-effective than conventional L-DAC.
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Base de dados:
MEDLINE
Assunto principal:
Energia Solar
/
Dióxido de Carbono
Tipo de estudo:
Health_economic_evaluation
Idioma:
En
Ano de publicação:
2024
Tipo de documento:
Article