Hexavalent chromium purification method and hexavalent chromium purification agent

JP2026097527AInactive Publication Date: 2026-06-16HATSUNO BUILDING MATERIALS IND CO LTD
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
HATSUNO BUILDING MATERIALS IND CO LTD
Filing Date
2024-12-04
Publication Date
2026-06-16
Estimated Expiration
Not applicable · inactive patent

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Abstract

The object of the present invention is to provide a hexavalent chromium purification method and a hexavalent chromium purification agent that exhibit excellent hexavalent chromium reduction properties. [Solution] A method for purifying hexavalent chromium, which involves spraying actinomycetes of strain ST13, deposited under accession number FERM P-20563, and acid onto a contaminated object containing hexavalent chromium, or mixing them with a contaminated object containing hexavalent chromium.
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Claims

1. A method for hexavalent chromium purification, comprising spraying actinomycetes of strain ST13, deposited under accession number FERM P-20563, and acid onto a contaminated object containing hexavalent chromium, or mixing them with a contaminated object containing hexavalent chromium.

2. The hexavalent chromium purification method according to claim 1, wherein the contaminated material is soil, cement or cement-based solidifying agent, concrete recycling material, fluidized treated soil, or excavated soil.

3. The method for purifying hexavalent chromium according to claim 1 or 2, wherein the acid is fulvic acid, humic acid, acetic acid, or nitrite.

4. A hexavalent chromium purification agent containing actinomycetes and acid, specifically the ST13 strain, deposited under accession number FERM P-20563.

5. A hexavalent chromium purification kit comprising a container containing actinomycetes of strain ST13, deposited under accession number FERM P-20563, and a container containing acid.