| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8dad96dd3ab61db5a6a5f7e056125342 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S423-17
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A62D2203-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A62D2101-43 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A62D3-38
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A62D3-33
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A62D3-02 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A62D101-43 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A62D3-38
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A62D3-33
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A62D3-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C12S5-00 |
| filingDate |
2000-06-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_df6e64bd5fd3e25a9a5b3f5ad5673e0b
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a806616248fb9af1107e3f8b61ec072c |
| publicationDate |
2002-03-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-1187661-A1 |
| titleOfInvention |
Process for immobilising arsenic waste |
| abstract |
The invention provides a process for removing and immobilising arsenic from an arsenic-containing waste. It comprises oxidising the arsenic to pentavalent arsenic in an aqueous medium, contacting the pentavalent arsenic with trivalent iron to form an insoluble iron-arsenic compound and separating precipitated iron-arsenic compound from the aqueous medium. The oxidation of arsenic is effected using oxidising bacteria at a pH between 0.5 and 4 and at a temperature between 20 and 90 °C in the presence of a mineral catalyst such as pyrite. |
| priorityDate |
1999-06-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |