Claims
- 1. A method of preparing an aqueous basic polyaluminum-iron halide solution containing a concentration of metal ions ranging form about 1.35 to 4.5 mol/liter as a dissolved salt of the formula
- Al.sub.1-x Fe.sub.x.sup.III Fe.sub.y.sup.II (OH).sub.3+2y-z Hal.sub.z
- wherein Hal is chlorine, bromine, iodine or mixtures thereof; (x+y)/1-x) is 0.2 to 1.5 (3+2y-z)/(3+2y) is 0.24 to 0.67; z is less than 3+2y; and wherein x/y is about 0 to 1 by mixing a polyaluminum halide solution with one or more members of the group consisting of ferrous halide and ferric halide.
- 2. The method as set forth in claim 1 wherein the halide is chloride.
- 3. A method of preparing an aqueous basic polyaluminum-iron halide solution containing a concentration of metal ions ranging from about 1.35 to 4.5 mol/liter as a dissolved salt of the formula
- Al.sub.1-x Fe.sub.x.sup.III Fe.sub.y.sup.II (OH).sub.3+2y-z Hal.sub.z
- wherein Hal is chlorine, bromine, iodine or mixtures thereof; (x+y)/(1-x) is 0.2 to 1.5; (3+2y-z)/(3+2y) is 0.24 to 0.67; z is less than 3+2y; and wherein x/y is about 0 to 1 which comprises reacting an aqueous aluminum halide solution or aqueous low basic polyaluminum halide solution with metallic iron.
- 4. The method as set forth in claim 3 wherein the halide is chloride.
Parent Case Info
This application is a division of application Ser. No. 218,984, filed Dec. 22, 1980, now U.S. Pat. No. 4,362,643, which is a continuation of application Ser. No. 055,416, filed July 6, 1979, now abandoned.
US Referenced Citations (13)
Non-Patent Literature Citations (1)
Entry |
Process Design Manual for Sludge Treatment and Disposal-US EDA Report-625/1-74-006, Chapter 6, p. 13, (Oct. 1974). |
Divisions (1)
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Number |
Date |
Country |
Parent |
218984 |
Dec 1980 |
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Continuations (1)
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Number |
Date |
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55416 |
Jul 1979 |
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