Biological filter for removing volatile hydrophobic compounds from gas emissions
AssigneeNederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek TNO
InventorsHubertus Henricus Jacobus Cox, Harmannus Johannes Doddema
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Abstract
Biological filter for removing volatile, hydrophobic compounds, such as toxic styrene, from gas emissions. These are broken down with a fungus, which is immobilized on a carrier of inert material, such as perlite. Preferably active carbon is also added. The filter is manufactured by cultivating the fungus on the carrier with the aid of the compound which is to be removed. In order to be able to make a filter quickly with a homogeneous distribution of the fungus therein, it is preferable to use a spore forming fungus.
Claims8
Device for the removal of volatile, hydrophobic compounds from gas emissions comprising a biological filter consisting of a carrier material provided with a biologically active material, wherein the carrier material consists of porous particles of a hydrophilic material, the biologically active material comprises a fungus covering the porous particles, the particles encase pores which provide a passage to said gas emissions and an acid environment resides in said filter.
Method of manufacturing a biological filter for removing volatile hydrophobic compounds from gas emissions, which comprises:
- placing porous particles of hydrophilic material in a suitable container, said porous particles being covered by a biologically active fungus, adding a soil suspension to the container, passing a gas, containing the hydrophobic compound which is to be removed, through the container, and providing an acid environment in said container.
Method of removing volatile hydrophobic compounds from a gas emission, which comprises:
- providing a biological reactor containing a biological filter consisting of porous particles of hydrophobic material, said porous particles being covered by a biologically active fungus, and
- passing the gas emission through the biological reactor so as to remove the volatile hydrophobic compounds from the gas emission.
Dependencies are inferred from the claim text.