IT1273657B - Method for removing and recovering trivalent chromium from wastewater. - Google Patents
Method for removing and recovering trivalent chromium from wastewater.Info
- Publication number
- IT1273657B IT1273657B ITMI941512A ITMI941512A IT1273657B IT 1273657 B IT1273657 B IT 1273657B IT MI941512 A ITMI941512 A IT MI941512A IT MI941512 A ITMI941512 A IT MI941512A IT 1273657 B IT1273657 B IT 1273657B
- Authority
- IT
- Italy
- Prior art keywords
- trivalent chromium
- wastewater
- recovering
- lies
- chromium
- Prior art date
Links
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 title abstract 4
- 229910052804 chromium Inorganic materials 0.000 title abstract 4
- 239000011651 chromium Substances 0.000 title abstract 4
- 238000000034 method Methods 0.000 title abstract 2
- 239000002351 wastewater Substances 0.000 title 1
- 239000011347 resin Substances 0.000 abstract 2
- 229920005989 resin Polymers 0.000 abstract 2
- 125000000129 anionic group Chemical group 0.000 abstract 1
- 239000011260 aqueous acid Substances 0.000 abstract 1
- 125000002091 cationic group Chemical group 0.000 abstract 1
- 239000003456 ion exchange resin Substances 0.000 abstract 1
- 229920003303 ion-exchange polymer Polymers 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 150000002739 metals Chemical class 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
Landscapes
- Treatment Of Water By Ion Exchange (AREA)
- Removal Of Specific Substances (AREA)
Abstract
Method for removing and recovering chromium and an aqueous acid solution containing trivalent chromium and possibly other metals, characterised in that removal of the trivalent chromium from the said solution is performed by placing the said solution in contact with a mixture of ion exchange resins comprising at least one cationic resin whose pKa lies between 3 and 7 and at least one anionic resin whose pKa lies between 8 and 12.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMI941512A IT1273657B (en) | 1994-07-20 | 1994-07-20 | Method for removing and recovering trivalent chromium from wastewater. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMI941512A IT1273657B (en) | 1994-07-20 | 1994-07-20 | Method for removing and recovering trivalent chromium from wastewater. |
Publications (3)
Publication Number | Publication Date |
---|---|
ITMI941512A0 ITMI941512A0 (en) | 1994-07-20 |
ITMI941512A1 ITMI941512A1 (en) | 1996-01-20 |
IT1273657B true IT1273657B (en) | 1997-07-09 |
Family
ID=11369313
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ITMI941512A IT1273657B (en) | 1994-07-20 | 1994-07-20 | Method for removing and recovering trivalent chromium from wastewater. |
Country Status (1)
Country | Link |
---|---|
IT (1) | IT1273657B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2609470C1 (en) * | 2015-08-17 | 2017-02-02 | Лидия Алексеевна Воропанова | Chrome ion removal from wastewater of leather, pickling and electroplating industry |
-
1994
- 1994-07-20 IT ITMI941512A patent/IT1273657B/en active IP Right Grant
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2609470C1 (en) * | 2015-08-17 | 2017-02-02 | Лидия Алексеевна Воропанова | Chrome ion removal from wastewater of leather, pickling and electroplating industry |
Also Published As
Publication number | Publication date |
---|---|
ITMI941512A0 (en) | 1994-07-20 |
ITMI941512A1 (en) | 1996-01-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
0001 | Granted | ||
TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19970724 |