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US 4,225,381 AGranted
Method for removing odor from fluid
AssigneeOji Paper Co., Ltd.
InventorsHisao Ishikawa, Yukio Kita, Kouki Horikoshi
Life of this patent
Estimating the term…
Abstract
A method for removing malodorous sulfur compounds from a fluid containing such compounds. In this method, fungi belonging to genera Cephalosporium, Paecilomyces, Penicillium, Aspergillus, Trichoderma and Mucor can be used for effectively removing malodorous sulfur compounds from a fluid.
Claims2
A method for removing odor from a fluid containing malodorous substances derived from sulfur compounds selected from the group consisting of hydrogen sulfide, methyl mercaptan, dimethyl sulfide, dimethyl disulfide and thiophene, comprising the steps of:
- (i) inoculating and cultivating at least one fungus selected from the group consisting of CEPHALOSPORIUM FERM-P No. 3976, CEPHALOSPORIUM FERM-P No. 3977, PENICILLIUM FERM-P No. 3978, PENICILLIUM FERM-P No. 3979, ASPERGILLUS FERM-P No. 3980, MUCOR FERM-P No. 3981 and TRICHODERMA FERM-P No. 3982 in a liquid medium or a solid medium in the presence of nutrients, and;
- (ii) introducing said fluid and oxygen or air into the medium containing the cultivated fungus thereby contacting said fluid with the fungus, whereby the malodorous sulfur compounds are decomposed by the action of the fungus.
Dependencies are inferred from the claim text.