http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H0824586-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_7ed8812c04e6f9dd07376206ca0c17b9 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D61-44 |
| filingDate | 1994-07-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_153a3ff8f23e25149947d95ea5381a62 |
| publicationDate | 1996-01-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-H0824586-A |
| titleOfInvention | Method and device for electrodialysis treatment of nitric hydrofluoric acid cleaning waste liquid |
| abstract | (57) [Abstract] [Purpose] Efficiently and continuously stable electrodialysis treatment of nitric hydrofluoric acid cleaning waste liquid containing iron ions as the main component to recover nitric hydrofluoric acid with high efficiency. [Structure] An anode chamber, a first intermediate chamber, a second intermediate chamber, and a cathode chamber, wherein the anode chamber and the first intermediate chamber, and the second intermediate chamber and the anode chamber are cation exchange membranes, respectively, and the first intermediate chamber. Chamber and second The intermediate chamber is isolated by an anion exchange membrane, (A) An aqueous solution containing sulfuric acid and / or nitric acid is stored as an anolyte in the anode chamber, (b) a mixed aqueous solution of nitric acid and hydrofluoric acid is stored as a first intermediate liquid in the first intermediate chamber, and (c) Two A nitric hydrofluoric acid cleaning waste liquid containing a metal ion containing iron ions as a main component is stored as a second intermediate liquid in the intermediate chamber, and (D) First, by electrodialyzing in an electrolytic cell containing an aqueous solution containing an inorganic salt and a pH buffer as a catholyte in the cathode chamber A method for electrodialyzing a waste liquid of washing with nitric hydrofluoric acid, which comprises recovering a part of the intermediate liquid as nitric hydrofluoric acid, reducing and removing metal ions of the second intermediate liquid, and discarding a part thereof out of the system. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2010125829-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2002119974-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-4631148-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2007529307-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7414323-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103553248-B http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103553248-A |
| priorityDate | 1994-07-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 52.