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=== Origin and composition === | === Origin and composition === | ||
Since all kind of biowaste contains hydrocarbonaceous material it can also be processed via pyrolysis. However, the composition of the feedstock has an impact on the pyrolysis process and therewith on the products which can be obtained. | |||
=== Pre-treatment === | === Pre-treatment === | ||
The pre-treatment of the feedstock has an impact on the pyrolysis process, its efficiency, and the yield of certain products. The following pre-treatments may be considered <ref name=":0" />: | The pre-treatment of the feedstock has an impact on the pyrolysis process, its efficiency, and the yield of certain products. The following pre-treatments may be considered <ref name=":0" />: | ||
* Sizing (e.g. chipping, grinding) | * Physical pre-treatments | ||
* Densification | ** Sizing (e.g. chipping, grinding) | ||
** Densification (e.g. pressure-densification) | |||
* Chemical pre-treatment | * Chemical pre-treatment | ||
** Acid and alkali pre-treatment | ** Acid and alkali pre-treatment (e.g for the removal of minerals) | ||
** Hydrothermal pre-treatment | ** Hydrothermal pre-treatment (e.g. torrefaction) | ||
** Steam explosion | ** Steam explosion | ||
** Ammonia fibre expansion | ** Ammonia fibre expansion |