FIELD: toxicology.
SUBSTANCE: invention relates to rendering harmless toxic substances representing a mixture of polychlorobenzenes and polychlorobiphenyls named as sovtol. Method is carried out by sequential treatment of the parent mixture with sulfurizing reagent-oleum at temperature 105-125 C and salt-forming reagent triethanolamine. Treatment with a sulfurizing agent is carried out in the presence of catalyst and in the optimal ratio sovtol : sulfurizing agent : catalyst : salt-forming reagent = 1:2:0.01:4 mass. p. p., respectively. Water glass is used as a catalyst. Method provides the wasteless technology in complete rendering harmless of sovtol.
EFFECT: improved rendering harmless.
1 tbl, 17 ex
| Title | Year | Author | Number |
|---|---|---|---|
| PROCESS FOR DECONTAMINATION OF MIXTURE OF POLYCHLOROBENZENES AND POLYCHLOROBIPHENYLS | 1994 |
|
RU2076090C1 |
| METHOD OF DECONTAMINATING MIXTURE OF POLYCHLOROBIPHENYLS AND POLYCHLOROBENZENES | 2009 |
|
RU2433113C2 |
| METHOD OF DECONTAMINATION OF MIXTURE OF POLYCHLORO BIPHENYLS AND TRICHLOROBENZENES | 2006 |
|
RU2304572C1 |
| METHOD OF SOVTOL DETOXICATION | 2007 |
|
RU2341509C1 |
| METHOD OF REMOVING SYNTHETIC OIL FROM TRANSFORMER | 2006 |
|
RU2317157C1 |
| METHOD OF DETOXIFYING SYNTHETIC INSULATING FLUID BASED ON POLYCHLORODIPHENYLS | 1998 |
|
RU2135241C1 |
| METHOD OF CLEANING TRANSFORMER IRON FROM SOFTOL | 2013 |
|
RU2536026C1 |
| METHOD FOR DETOXIFICATION OF POLYCHLOROBIPHENILS | 2002 |
|
RU2233829C2 |
| METHOD FOR DETOXIFYING POLYCHLOROBIPHENILS | 2003 |
|
RU2266890C2 |
| METHOD FOR PRODUCTION OF ANTISEPTIC PREPARATION FOR WOOD | 2005 |
|
RU2286247C1 |
