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High-yield hydrogen from thermal processing of waste plastics
- Source :
- Proceedings of the Institution of Civil Engineers - Waste and Resource Management. 175:3-13
- Publication Year :
- 2022
- Publisher :
- Thomas Telford Ltd., 2022.
-
Abstract
- The production of hydrogen (H2) from the pyrolysis–catalytic steam reforming of polyethylene, polystyrene (PS) and polyethylene terephthalate waste plastics was investigated using a two-stage reactor. The highest yield of hydrogen (125 mmol/gplastic) was obtained with PS at a catalyst temperature of 900°C and steam input weight hourly space velocity of 7.59 g/(h/gcatalyst) with a 10 wt% nickel/aluminium oxide (Ni/Al2O3) catalyst. Further investigation using PS showed that the process parameters of high catalyst temperature (900°C) and optimised steam input rate significantly increased the yield of hydrogen. Examination of several different catalysts (nickel/aluminium oxide, iron/aluminium oxide, copper/aluminium oxide, cobalt/aluminium oxide) showed that nickel/aluminium oxide had by far the highest catalytic activity and selectivity towards the yield of hydrogen.
Details
- ISSN :
- 17476534 and 17476526
- Volume :
- 175
- Database :
- OpenAIRE
- Journal :
- Proceedings of the Institution of Civil Engineers - Waste and Resource Management
- Accession number :
- edsair.doi...........c4e70a28ccc605c5f13addd2714b15d4