http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-106756048-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_479789c4cae42aed4535cdf0d17ecc47 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P10-20 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B34-32 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B7-006 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B34-32 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B7-00 |
| filingDate | 2016-12-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4baf0507776d6b751c6e9be56f120d0f http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cd902e79e013e3113c7053574df61a4d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_70e0945f6e64d7dbd3900d05a2a5b384 |
| publicationDate | 2017-05-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-106756048-A |
| titleOfInvention | A method for recovering chromium from waste tanning slag |
| abstract | The invention relates to a method for recovering chromium from tanning waste skin slag, which belongs to the technical field of heavy metal treatment. The present invention uses white vinegar, lemon and tartar to mix and ferment, acidifies the tartar to obtain mixed organic acids, and then uses sludge and biogas liquid to accelerate the degradation of tannery waste skins, so that the complexes of collagen and cadmium are exposed, and then uses the mixed The organic acid destroys the coordination bond between the chromium and the carboxyl group of the collagen to form a new chelate of soluble chromium. The filtrate of the dissolved chelated chromium is injected into the sedimentation tank, and the chromium is replaced by zinc to deposit it on the zinc plate to achieve recovery. Chromium purpose. The method for removing chromium and recovering chromium from tanning waste leather slag has high dechrome rate, simple and easy-to-control removal steps, low cost and can recover chromium therefrom, and has broad application prospects. |
| priorityDate | 2016-12-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 40.