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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

spent coffee grounds

agricultural residue

 biomass composition

Spent coffee grounds contain large amounts of organic compounds (fatty acids, lignin, cellulose, hemicellulose) and other polysaccharides.

 current disposal methods

Some spent coffee grounds are used as compot, most are dumped into general waste and disposed of through incineration and landfills.

 environmental impact

Spent coffee grounds contain oils and other compounds that makes soils more acidic. In landfills, this creates an acidic leachate (liquid) which can damage the surrounding soil. The decomposition of coffee waste in landfills generates greenhouse gases (GHGs), especially methane.

 some technical data

processing size

S (small)

mesh size


density [g/cm3]

2.86 g/cm3

hardness [Mohs]


volatile carbon content

66.5 %

water affinity



spent coffee grounds

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