Biopurification system Country of the study Type of substrates tested Literature resource   Biomassbed   Italy Urban/Garden Compost Straw Citrus peel Vine branches   [9]   Biobed   Sweden Soil Peat Wheat straw [3,5]     Biobed     Greece Cotton crop residues Olive leaves compost Corn cobs Sunflower residues Orange peels Soil Spent mushroom substrate     [14]   Biobed   Denmark Wheat straw Sphagnum Soil [11]   Biofilter   Belgium Soil Straw  Peat  Garden waste compost Cow manure Willow chopping Coconut chips   [3,5]   Phytobac   Belgium/France Soil Green compost, Straw Leek rests [13]   Biobed   UK Topsoil Peat Wheat straw [6]   Biobed   Chile Andisol Peat Wheat straw [12]

Table 1: Example of biopurification system.