Microwave-assisted co-gasification of mixed plastics and corn stover: A synergistic approach to produce clean hydrogen
Journal Article
·
· Energy Conversion and Management
- National Energy Technology Lab. (NETL), Morgantown, WV (United States)
Co-gasification of waste plastic and corn stover into hydrogen is an effective way of reducing hydrogen cost and carbon footprint. However, current gasification technologies are energy intensive and cannot accommodate flexible feedstock. Microwave gasification offers several advantages including higher H2 yield and enhanced selectivity to syngas over tars. Herein this work presents parametric optimization study of microwave co-gasification of mixed plastics and corn stover for hydrogen-rich syngas. High hydrogen yields of 30.5 mmolH2/gfeed at 700 °C were obtained using a microwave reactor, as opposed to 0.9 mmolH2/gfeed at 700-950 °C with conventional heating. Hydrogen yields are >98% of the theoretical extractable hydrogen from feedstock. Microwaves enhanced plastic and corn stover synergy and reduced tar yields. H-poor carbon formation resulting from the dehydrogenation of tar and coke, and light olefins decomposition, triggered by the external microwave electric fields, allowed further cracking of intermediate hydrocarbons to produce additional H2.
- Research Organization:
- National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV, and Albany, OR (United States)
- Sponsoring Organization:
- USDOE; USDOE Office of Fossil Energy (FE)
- Grant/Contract Number:
- 89243318CFE000003
- OSTI ID:
- 1984046
- Alternate ID(s):
- OSTI ID: 1957864
- Journal Information:
- Energy Conversion and Management, Journal Name: Energy Conversion and Management Vol. 280; ISSN 0196-8904
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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