| Title |
Approaching circular economy through waste-to-blue hydrogen: Systems modeling and multi-objective optimization |
| ID_Doc |
5161 |
| Authors |
Qian, QM; Ren, JZ; He, C; Azzaro-Pantel, C |
| Title |
Approaching circular economy through waste-to-blue hydrogen: Systems modeling and multi-objective optimization |
| Year |
2024 |
| Published |
|
| DOI |
10.1016/j.cej.2024.154660 |
| Abstract |
Hydrogen is gaining increasing recognition as a clean and versatile energy carrier. The conversion of waste materials into energy or chemical products plays a crucial role in the circular economy paradigm. This study provides a comprehensive analysis of the waste-to-blue hydrogen process. The process entails co-gasification of a mixture of waste materials such as plastics and biomass. The system incorporates a rigorous modeling of the carbon capture process using a blended MDEA/PZ solvent to produce blue hydrogen. A multi-objective optimization framework is introduced to simultaneously minimize the levelized cost of hydrogen and the cradle-togate lifecycle endpoint value. The minimum levelized cost of hydrogen determined through this analysis is $3.02/kg, which substantiates the economic feasibility of the system under consideration. The minimum life cycle endpoint value is 247.23 mPt per kilogram of H2, 49.38 % lower than the conventional steam methane reforming technique. The observations indicate that increasing the mass fraction of biomass in the feedstock, raising the gasifying temperature, and lowering the oxygen-to-feed ratio have a positive influence on both the final levelized cost of hydrogen and the life cycle endpoint value. The Pareto curve provides decision-makers with valuable insights into the trade-off between the two objectives. |
| Author Keywords |
Waste-to-hydrogen; Low-carbon hydrogen production; Life cycle optimization; Multi-objective optimization; Carbon dioxide capture; Gasification |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:001297132500001 |
| WoS Category |
Engineering, Environmental; Engineering, Chemical |
| Research Area |
Engineering |
| PDF |
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