| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_114e4423ec77cbc8dab9d0a98909704e |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2311-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2311-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D61-147 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D3-143
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C315-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C317-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D61-58
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D61-44 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C317-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C315-06 |
| filingDate |
2010-10-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7fc938b7abd5665014fffd96a0c5df4e
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1719636227b66ddc71f706811cf73f88
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a6ffd7965c414f6587a6674dece14035
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_06d98f3377a9aa0a7ee02cf39570af4e
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2e06444531545801176731e89913d703
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2d4ff707c295f0f84db09f2ac54318c8
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_33effd2d87c59301f5200caa5df0200e |
| publicationDate |
2011-05-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CA-2779656-A1 |
| titleOfInvention |
Electrodialysis-distillation hybrid process for the recovery of dimethylsulfoxide (dmso) solvent from industrial effluent |
| abstract |
The invention relates to the removal of the impact-sensitive and hazardous sodium azide (NaN3) salt along with ammonium chloride (NH4Cl) for the recovery of dimethyl sulfoxide (DMSO) solvent present in a pharmaceutical industrial effluent generated during the manufacture of antiretroviral drugs. The wastewater cannot be directly distilled for DMSO recovery in the presence of NaN3, which could cause explosions. Moreover, disposal of the DMSO increases the chemical oxygen demand (COD) load on the effluent treatment plant (ETP). The developed process includes pretreatment of the effluent for the removal of colloidal impurities and suspended solids followed by electrodialysis using cation and anion-exchange membranes stacked alternately for reduction of the salts concentration to ppm levels. The desalted liquor is then subjected to two vacuum distillation steps for recovering pure DMSO solvent. |
| priorityDate |
2009-11-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |