http://rdf.ncbi.nlm.nih.gov/pubchem/patent/BR-PI0700030-B1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_fef480aca45c0b7889a4170af35c3626 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F101-20 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B39-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J20-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J20-32 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F1-28 |
| filingDate | 2007-01-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bed94cdf0ef5162db9809731778babc9 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4af95014ef68335b7b7bedda906b898e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b0d1923ff137132b0bd4e5490e685552 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_304a95d7c81044ae6d4a3491da1942a9 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4a2985c1abdf6fd2c08e80bb747e8135 |
| publicationDate | 2017-05-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | BR-PI0700030-B1 |
| titleOfInvention | method of fabrication of type 4a zeolite adsorbent spheres via sol-gel process suitable for the adsorption and capture of heavy metals present at low concentrations in large volumes of industrial liquid effluents |
| abstract | Method of fabrication of type 4a zeolite adsorbent spheres via sol-gel process suitable for the adsorption and capture of heavy metals present in low concentrations in large volumes of industrial liquid effluents. The present invention relates to a method of manufacturing zeolite type 4a adsorbent spheres which is based on the well-known sol-gel process for immobilizing zeolite type 4a microparticles (<385 <m>), preferably at the phase in ~ 2 ~ o.a1 ~ 2 ~ o ~ 3 ~ .1,85 sio ~ 2 ~ .5,1h ~ 2 ~ o, in spherical shape and glue them with polyvinyl alcohol (pva) molecules and bohemite nanoparticles ( <244> -a1 ~ 2 ~ o ~ 3 ~ .h ~ 2 ~ o), nanoparticles are obtained with the aid of a sol-gel transformation reaction at room temperature in a gaseous medium containing nh ~ 3 ~ and in an aqueous medium containing nh ~ 4 ~ oh. Type 4a zeolite spheres are obtained with high sphericity, mechanical strength greater than 2 kg / sphere, narrow diameter distribution, average diameter between 1 mm and 5 mm, with good chemical stability in acidic, basic and neutral media and with good ability to absorb water without leading to destructive swelling. These beads are suitable for the alternative treatment of large volumes of industrial liquid tailings containing low concentrations of heavy metals, particularly cd, cu and zn, as they can be obtained industrially at low cost and with the following adsorption characteristics for cd + cu + zn: removal efficiency greater than 81%, maximum adsorption capacity of 746 <109> mo1 / g and adsorption rate <242> 18.3 <109> mo1 / gh |
| priorityDate | 2007-01-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 100.