| Title | Thermochemical conversion of municipal solid waste into energy and hydrogen: a review |
|---|---|
| ID_Doc | 8448 |
| Authors | Nandhini, R; Berslin, D; Sivaprakash, B; Rajamohan, N; Vo, DVN |
| Title | Thermochemical conversion of municipal solid waste into energy and hydrogen: a review |
| Year | 2022 |
| Published | Environmental Chemistry Letters, 20.0, 3 |
| Abstract | The rising global population is inducing a fast increase in the amount of municipal waste and, in turn, issues of rising cost and environmental pollution. Therefore, alternative treatments such as waste-to-energy should be developed in the context of the circular economy. Here, we review the conversion of municipal solid waste into energy using thermochemical methods such as gasification, combustion, pyrolysis and torrefaction. Energy yield depends on operating conditions and feedstock composition. For instance, torrefaction of municipal waste at 200 degrees C generates a heating value of 33.01 MJ/kg, while the co-pyrolysis of cereals and peanut waste yields a heating value of 31.44 MJ/kg at 540 degrees C. Gasification at 800 degrees C shows higher carbon conversion for plastics, of 94.48%, than for waste wood and grass pellets, of 70-75%. Integrating two or more thermochemical treatments is actually gaining high momentum due to higher energy yield. We also review reforming catalysts to enhance dihydrogen production, such as nickel on support materials such as CaTiO3, SrTiO3, BaTiO3, Al2O3, TiO3, MgO, ZrO2. Techno-economic analysis, sensitivity analysis and life cycle assessment are discussed. |
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