Wikipedia
Subcoal
Subcoal technology is used to process paper plastic waste fractions into a substitute for coal or lignite. The fuel pellets can be used as secondary energy source in industrial furnaces, such as lime kilns and cement kilns, coal-fired power stations and blast furnaces. Subcoal has a caloric value comparable with lignite. The technology was developed by the Dutch chemical company DSM. A study by CE Delft revealed that for the paper-plastic fraction of household waste, the Subcoal route has a better climate and overall environmental score as compared to the incineration in a waste incineration plant.