SU421633A1 - - Google Patents

Info

Publication number

SU421633A1

SU421633A1 SU1625488A SU1625488A SU421633A1 SU 421633 A1 SU421633 A1 SU 421633A1 SU 1625488 A SU1625488 A SU 1625488A SU 1625488 A SU1625488 A SU 1625488A SU 421633 A1 SU421633 A1 SU 421633A1

Authority

SU

USSR - Soviet Union

Prior art keywords

sulfuric acid

solution

chromium

trivalent

hexavalent

Prior art date

1971-03-01

Links

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• QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 27
• 239000000243 solution Substances 0.000 description 19
• FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 10
• VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 9
• 239000011651 chromium Substances 0.000 description 8
• 229910052804 chromium Inorganic materials 0.000 description 8
• HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
• JOPOVCBBYLSVDA-UHFFFAOYSA-N chromium(6+) Chemical compound [Cr+6] JOPOVCBBYLSVDA-UHFFFAOYSA-N 0.000 description 6
• 238000000034 method Methods 0.000 description 6
• WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Inorganic materials Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 description 5
• 239000011780 sodium chloride Substances 0.000 description 5
• XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
• 239000007789 gas Substances 0.000 description 4
• 239000002244 precipitate Substances 0.000 description 4
• 239000011541 reaction mixture Substances 0.000 description 4
• 229910052784 alkaline earth metal Inorganic materials 0.000 description 3
• ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
• -1 alkaline-earth metal alkali hydroxide Chemical class 0.000 description 2
• 239000000460 chlorine Substances 0.000 description 2
• 229910052801 chlorine Inorganic materials 0.000 description 2
• GRWVQDDAKZFPFI-UHFFFAOYSA-H chromium(III) sulfate Chemical class [Cr+3].[Cr+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O GRWVQDDAKZFPFI-UHFFFAOYSA-H 0.000 description 2
• 238000004140 cleaning Methods 0.000 description 2
• 229910052751 metal Inorganic materials 0.000 description 2
• 239000002184 metal Substances 0.000 description 2
• KMUONIBRACKNSN-UHFFFAOYSA-N potassium dichromate Chemical compound [K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KMUONIBRACKNSN-UHFFFAOYSA-N 0.000 description 2
• 238000011084 recovery Methods 0.000 description 2
• 235000011121 sodium hydroxide Nutrition 0.000 description 2
• 241000191291 Abies alba Species 0.000 description 1
• ZKQDCIXGCQPQNV-UHFFFAOYSA-N Calcium hypochlorite Chemical compound [Ca+2].Cl[O-].Cl[O-] ZKQDCIXGCQPQNV-UHFFFAOYSA-N 0.000 description 1
• VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
• DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
• DPDMMXDBJGCCQC-UHFFFAOYSA-N [Na].[Cl] Chemical compound [Na].[Cl] DPDMMXDBJGCCQC-UHFFFAOYSA-N 0.000 description 1
• 230000002378 acidificating effect Effects 0.000 description 1
• 229910001854 alkali hydroxide Inorganic materials 0.000 description 1
• 229910001860 alkaline earth metal hydroxide Inorganic materials 0.000 description 1
• 150000001342 alkaline earth metals Chemical class 0.000 description 1
• 239000007864 aqueous solution Substances 0.000 description 1
• 230000015572 biosynthetic process Effects 0.000 description 1
• 238000006243 chemical reaction Methods 0.000 description 1
• 239000003638 chemical reducing agent Substances 0.000 description 1
• 150000001845 chromium compounds Chemical class 0.000 description 1
• XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
• 229910044991 metal oxide Inorganic materials 0.000 description 1
• 150000004706 metal oxides Chemical class 0.000 description 1
• 239000012452 mother liquor Substances 0.000 description 1
• 239000000047 product Substances 0.000 description 1
• 238000000746 purification Methods 0.000 description 1
• 239000013049 sediment Substances 0.000 description 1
• 239000010802 sludge Substances 0.000 description 1
• 239000011734 sodium Substances 0.000 description 1
• 229910052708 sodium Inorganic materials 0.000 description 1
• 239000011550 stock solution Substances 0.000 description 1
• RAHZWNYVWXNFOC-UHFFFAOYSA-N sulfur dioxide Inorganic materials O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 1
• 238000005979 thermal decomposition reaction Methods 0.000 description 1
• 238000004065 wastewater treatment Methods 0.000 description 1