Claims
- 1. A method of adsorption treatment comprising selectively adsorbing at least one type of ion from the group consisting of ferric ions and cupric ions from an aqueous solution thereof with a three-dimensional phenolic chelate resin comprising the crosslinked reaction product of (a) a phenolic compound represented by the general formula (I) ##STR4## wherein M is an alkali metal atom, an ammonium group or a hydrogen atom; R.sub.1 and R.sub.2, which may be the same or different, each is a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, with (b) a phenol and (c) an aldehyde or an aldehyde precursor.
- 2. The method of adsorption treatment according to claim 1, wherein the aqueous solution contains two or more heavy metal ions including at least one ion selected from the group consisting of ferric ion and cupric ion.
- 3. The method of adsorption treatment according to claim 1, wherein the aqueous solution is an aqueous acidic solution having a pH of from 0 to about 3.
- 4. The method of adsorption treatment according to claim 1, wherein the aqueous solution is a strongly acidic aqueous solution having a pH of from 0 to 2.
Priority Claims (1)
Number |
Date |
Country |
Kind |
52-22479 |
Mar 1977 |
JPX |
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Parent Case Info
This is a Division of application Ser. No. 882,307, filed Mar. 1, 1978, now U.S. Pat. No. 4,197,391 4-8-80.
US Referenced Citations (4)
Number |
Name |
Date |
Kind |
3461099 |
Muzyczko et al. |
Aug 1969 |
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3936399 |
Hirai et akl. |
Feb 1976 |
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4028284 |
Hirai et al. |
Jun 1977 |
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4190709 |
Hodgkin |
Feb 1980 |
|
Non-Patent Literature Citations (1)
Entry |
Helvetica Chimica Acta, 35, 1785-1793, (1952), Schwarzenbach et al. |
Divisions (1)
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Number |
Date |
Country |
Parent |
882307 |
Mar 1978 |
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