Ways2H, similarly, is looking to use a processed feedstock of Municipal Solid Waste, mixed with ceramic beads that have been heated to around 1,000°C. At this heat, the bulk of the waste is converted to methane, hydrogen, carbon monoxide and CO2, while a portion is left as solid char – which can be identified as ‘stored carbon.’ This char is recovered and burned as the supply of heat for the ceramic beads.
The mixture of gases then undergoes steam reforming, to produce hydrogen and CO2 from the methane – improving hydrogen yield by 50%. Depending on the initial feedstock, Ways2H claims that one ton of dry waste can produce up to 120 kilograms of hydrogen – although typical yields sit between 40 and 50 kilograms. This depends on the water content of the feedstock – which inherently boosts hydrogen content – with the 120 kg figure coming from Ways2H’s pilot in South America, which uses sewage sludge as its feedstock.
Last week, the UK also approved its second waste plastic to hydrogen plant, with the £20 million West Dunbartonshire facility using Powerhouse Energy’s technology aiming to produce 13,500 tons of hydrogen per year.
The above-featured image is of H2-Industries (Photo Credit: Shutterstock/ Alexander Kirch