| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_665a1ccbeb11cc1bcdd3c4d078d4e3f0
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_a3ae3d32e12b5bb9d9e0d8e48d7318ac |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B09C1-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-52
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-58
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-70 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F1-58
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F1-52
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B09C1-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F1-70 |
| filingDate |
2017-09-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5b35cf636c2bdb96e73e778afbae8c66
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_74accbe0e3a1b5cd7812a887a781ac50
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0a8009c254854675d448154fbba286a9
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_09ff6b51c02fdc641194be0be72963ea |
| publicationDate |
2019-03-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
KR-20190033142-A |
| titleOfInvention |
Method of arsenic treatment and oxalate recovery from soil washing wastewater |
| abstract |
The removal method of heavy metals contained in soil washing wastewater is proposed to recover oxalate and iron from wastewater generated from soil washing with oxalic acid by separating it from heavy metals such as arsenic. The method comprises contacting the contaminated soil containing arsenic combined with iron and aluminum oxides with an arsenic extracting agent containing an inorganic salt of oxalic acid, extracting and washing the arsenic in the contaminated soil, reacting the generated soil washing wastewater with the reducing agent, 3 gacheol (Fe 3+) is reduced to the 2 gacheol (Fe 2+) comprises two gacheol (Fe 2+) is to produce a Fe (C 2 O 4) ยท 2H 2 O crystals in combination with oxalate recovered , Fe (C 2 O 4 ) .2H 2 O crystals are reacted with a reducing agent to produce arsenic in the wastewater in sulfide form. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2022184903-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-20200126682-A |
| priorityDate |
2017-09-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |