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2nd/3rd generation

Choose from a vast choice of biomass or supply your own organic waste streams to help us building circular materials and more permanent carbon sinks.

2nd/3rd generation

help center > 2nd/3rd generation biomass overview > 2nd/3rd generation biomass

rice husk

agricultural residue

 biomass composition

Rice husk constitutes about 20% of the weight of rice and its composition is as follows: cellulose 50 w.-%, lignin 25 w.-%–30 w.-%, silica 15 w.-%–20 w.-%, and moisture. Bulk density of rice husk is low in the range 90–150 g/cm3.

 current disposal methods

Incorporating straw and rice husk into the soil delays soil preparation and the development of the next crop. Because of this, rice straw and husk is often considered a waste product. It is either burned in the fields, resulting in airborne emissions hazardous to humans and the ecosystem or dumped into surface water like rivers and waterways.

 environmental impact

This practice causes hazardous air pollution, increased emission of greenhouse gases, and loss of nutrients from farmers’ fields.

 some technical data

processing size

M (medium / not processed)

mesh size


density [g/cm3]

0.74 g/cm3

hardness [Mohs]

volatile carbon content

33.9 %

water affinity



rice husk

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