This document determines the fuel quality classes and specifications of graded non-woody pellets. This document covers only non-woody pellets produced from the following raw material (see ISO 17225-1:2021, Table 1): — 2 Herbaceous biomass — 3 Fruit biomass — 4 Aquatic biomass — 5 Biomass blends and mixtures NOTE 1 Herbaceous biomass originates 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 by-products such as cereals. NOTE 2 Blends and mixtures include blends and mixtures from the main origin-based solid biofuel groups woody biomass, 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 17225-1:2021, Table 1. If solid biofuel blend or mixture contains chemically treated material it shall be stated. NOTE 3 Thermally treated biomass pellets (e.g. torrefied pellets) are not included in the scope of this document.
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ISO 14780:2017 Solid biofuels — Sample preparation
ISO 16559:2014 Solid biofuels — Terminology, definitions and descriptions
ISO 16948:2015 Solid biofuels — Determination of total content of carbon, hydrogen and nitrogen
ISO 14780:2017 Solid biofuels — Sample preparation
ISO 16559:2014 Solid biofuels — Terminology, definitions and descriptions
ISO 16948:2015 Solid biofuels — Determination of total content of carbon, hydrogen and nitrogen
ISO 16968:2015 Solid biofuels — Determination of minor elements
ISO 16994:2016 Solid biofuels — Determination of total content of sulfur and chlorine
ISO 17225-1:2021 Solid biofuels — Fuel specifications and classes — Part 1: General requirements
ISO 17828:2015 Solid biofuels — Determination of bulk density
ISO 17829:2015 Solid Biofuels — Determination of length and diameter of pellets
ISO 17831-1:2015 Solid biofuels — Determination of mechanical durability of pellets and briquettes — Part 1: Pellets
ISO 18122:2015 Solid biofuels — Determination of ash content
ISO 18125:2017 Solid biofuels — Determination of calorific value
ISO 18134-1:2015 Solid biofuels — Determination of moisture content — Oven dry method — Part 1: Total moisture — Reference method
ISO 18134-2:2017 Solid biofuels — Determination of moisture content — Oven dry method — Part 2: Total moisture — Simplified method
ISO 18135:2017 Solid Biofuels — Sampling
ISO 18846:2016 Solid biofuels — Determination of fines content in quantities of pellets
ISO 21404:2020 Solid biofuels — Determination of ash melting behaviour
ISO 21945:2020 Solid biofuels — Simplified sampling method for small scale applications