UNE-EN ISO 17225-7:2022

This part of ISO 17225 determines the fuel quality classes and specifications of graded non-woody

briquettes. This part of ISO 17225 covers only non-woody briquettes produced from the following raw

materials (see ISO 17225-1, Table 1):

2 Herbaceous biomass

NOTE 1 Herbaceous biomass is from plants that have a non-woody stem and which die back at the end of the

growing season. It includes grains or seeds crops from food production or processing industry and their byproducts

such as cereals.

3 Fruit biomass

4 Aquatic biomass

5 Biomass blends and mixtures

NOTE 2 Group 5 Blends and mixtures include blends and mixtures from the main origin-based solid biofuel

groups woody, herbaceous biomass, fruit biomass and aquatic biomass.

Blends are intentionally mixed biofuels, whereas mixtures are unintentionally mixed biofuels. The

origin of the blend and mixture is to be described using ISO 17225-1, Table 1.

If solid biofuel blend or mixture contains chemically treated material it shall be stated.

NOTE 3 Thermally treated biomass briquettes (e.g. torrefied briquettes) are not included in the scope of this

part of ISO 17225. Torrefaction is a mild pre-treatment of biomass at a temperature between 200 300 °C.