US3898160A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovering proteins from waste water
Assignee: United States Department of Agriculture
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Filing: 1973-11-20
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Granted: 1975-08-05
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Expires: 1993-11-20
Abstract
Abstract Treatment of proteinaceous waste waters which provides recovery of valuable proteins and formation of effluents acceptable for disposal into municipal sewage systems or into waterways. Feature of invention is that waste water is treated with a molecularlydehydrated phosphate and a polyvalent metal salt at pH 7 to precipitate a polyvalent metal-protein-phosphate complex.
Inventors
- 👤 John W Finley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:24
CPC Classifications
A; A23; A23J; A23J1/00; A23J1/16; A23J1/001; C; C02; C02F; C02F1/00; C02F1/52; C02F1/5236; Y; Y10; Y10S; Y10S210/00; Y10S210/902; Y10S210/903; Y10S210/905; Y10S530/00; Y10S530/859
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
108 words
A METHOD FOR REMOVING PROTEINS, STARCH, AND OTHER MATERIALS FROM PROTEINACEOUS WASTE WATER, THEREBY PRODUCING BOTH AN EFFLUENT CAPABLE OF DISPOSAL INTO MUNICIPAL WASTE TREATMENT SYSTEMS OR WATERWAYS AND A SOLID FERRIC-PROTEIN-PHOSPHATE COMPLEX, SAID COMPLEX BEING SUSCEPTIBLE TO FACILE RECOVERY OF THE VALUABL A. ADDING TO THE PROTEINACEOUS WASTE WATER AN ALKALI METAL SALT OF A MOLECULARLY-DEHYDRATED PHOSPHATE UNTIL THE CONCENTRATION OF FERRIC IONS UNTIL THE CONCENTRATION THEREOF IS 0.001M TO 0.1M, B. PRECIPATING A FERRIC-PROTEIN-PHOSPHATE COMPLEX AND AVOIDING PRECIPITATION OF A PROTEIN-PHOSPHATE COMPLEX BY RAISING THE PH OF THE SO-TREATED WASTE TO A PH OF 7.0, AND C. SEPARATING THE EFFLUENT FROM THE SAID FERRIC-PROTEINPHOSPHATE COMPLEX PRECIPITATE.
Claim 2
Independent Claim
108 words
A METHOD FOR REMOVING PROTEINS, STARCH, AND OTHER MATERIALS FROM PROTEINACEOUS WASTE WATER, THEREBY PRODUCING BOTH AN EFFLUENT CAPABLE OF DISPOSAL INTO MUNICIPAL WASTE TREATMENT SYSTEMS OR WATERWAYS AND A SOLID FERRIC-PROTEIN-PHOSPHATE COMPLEX, SAID COMPLEX BEING SUSCEPTIBLE TO FACILE RECOVERY OF THE VALUABL A. ADDING TO THE PROTEINACEOUS WASTE WATER AN ALKALI METAL SALT OF A MOLECULARLY-DEHYDRATED PHOSPHATE UNTIL THE CONCENTRATION OF FERRIC IONS UNTIL THE CONCENTRATION THEREOF IS 0.001M TO 0.1M, B. PRECIPATING A FERRIC-PROTEIN-PHOSPHATE COMPLEX AND AVOIDING PRECIPITATION OF A PROTEIN-PHOSPHATE COMPLEX BY RAISING THE PH OF THE SO-TREATED WASTE TO A PH OF 7.0, AND C. SEPARATING THE EFFLUENT FROM THE SAID FERRIC-PROTEINPHOSPHATE COMPLEX PRECIPITATE.
Claim 3
Independent Claim
125 words
A method for removing proteins, starch, and other materials from proteinaceous waste water, thereby producing both an effluent capable of disposal into municipal waste treatment systems or waterways and a solid calcium-protein-phosphate complex, said complex being susceptible to facile recovery of the valuable proteins contained therein, which comprises: a. adding to the proteinaceous waste water an alkali metal salt of a molecularly-dehydrated phosphate until the concentration thereof is 0.0001 M to 0.1 M and a source of calcium ions until the concentration thereof is 0.001 M to 0.1 M, b. precipitating a calcium-protein-phosphate complex and avoiding precipitation of a protein-phosphate complex by raising the pH of the so-treated waste to a pH of 7.0, and c. separating the effluent from the said calcium-protein-phosphate complex precipitate.
Claim 4
Independent Claim
125 words
A method for removing proteins, starch, and other materials from proteinaceous waste water, thereby producing both an effluent capable of disposal into municipal waste treatment systems or waterways and a solid calcium-protein-phosphate complex, said complex being susceptible to facile recovery of the valuable proteins contained therein, which comprises: a. adding to the proteinaceous waste water an alkali metal salt of a molecularly-dehydrated phosphate until the concentration thereof is 0.0001 M to 0.1 M and a source of calcium ions until the concentration thereof is 0.001 M to 0.1 M, b. precipitating a calcium-protein-phosphate complex and avoiding precipitation of a protein-phosphate complex by raising the pH of the so-treated waste to a pH of 7.0, and c. separating the effluent from the said calcium-protein-phosphate complex precipitate.
Claim 5
Independent Claim
87 words
A method for removing proteins, starch, and other material from proteinaceous waste water, thereby rendering the effluent capable of disposal into municipal waste treatment systems or waterways, which comprises: a. adding thereto an alkali metal salt of a molecularly-dehydrated phosphate to a concentration of 0.0001 M to 0.1 M, b. raising the pH of the so-treated waste to a pH of 7.0, and c. precipitating and removing a ferric-protein-phosphate complex by passing the so-treated waste water through a filter bed composed essentially of a ferric ion source.
Claim 6
Independent Claim
87 words
A method for removing proteins, starch, and other material from proteinaceous waste water, thereby rendering the effluent capable of disposal into municipal waste treatment systems or waterways, which comprises: a. adding thereto an alkali metal salt of a molecularly-dehydrated phosphate to a concentration of 0.0001 M to 0.1 M, b. raising the pH of the so-treated waste to a pH of 7.0, and c. precipitating and removing a ferric-protein-phosphate complex by passing the so-treated waste water through a filter bed composed essentially of a ferric ion source.
Claim 7
Independent Claim
87 words
A method for removing proteins, starch, and other materials from proteinaceous waste water, thereby rendering the effluent capable of disposal into municipal waste treatment systems or waterways, which comprises: a. adding thereto an alkali metal salt of a molecularly-dehydrated phosphate to a concentration of 0.0001 M to 0.1 M, b. raising the pH of the so-treated waste to a pH of 7.0, and c. precipitating and removing a calcium-protein-phosphate complex by passing the so-treated waste water through a filter bed composed essentially of a calcium ion source.
Claim 8
Independent Claim
87 words
A method for removing proteins, starch, and other materials from proteinaceous waste water, thereby rendering the effluent capable of disposal into municipal waste treatment systems or waterways, which comprises: a. adding thereto an alkali metal salt of a molecularly-dehydrated phosphate to a concentration of 0.0001 M to 0.1 M, b. raising the pH of the so-treated waste to a pH of 7.0, and c. precipitating and removing a calcium-protein-phosphate complex by passing the so-treated waste water through a filter bed composed essentially of a calcium ion source.
Claim 9
Independent Claim
102 words
A method for removing proteins, starch, and other materials from brewer''s waste, thereby producing both an effluent capable of disposal into municipal waste treatment systems or waterways and a solid calcium-protein-tripolyphosphate complex, said complex being susceptible to facile recovery of the valuable proteins contained therein, which comprises: a. adding to the brewer''s waste sodium tripolyphosphate until the concentration thereof is 0.01 M and calcium chloride until the concentration thereof is 0.04 M, b. precipitating a solid calcium-protein-tripolyphosphate complex by raising the pH of the so-treated waste to a pH of 7.0, and c. separating the effluent from the solid calcium-protein-tripolyphosphate complex precipitate.
Claim 10
Independent Claim
102 words
A method for removing proteins, starch, and other materials from brewer''s waste, thereby producing both an effluent capable of disposal into municipal waste treatment systems or waterways and a solid calcium-protein-tripolyphosphate complex, said complex being susceptible to facile recovery of the valuable proteins contained therein, which comprises: a. adding to the brewer''s waste sodium tripolyphosphate until the concentration thereof is 0.01 M and calcium chloride until the concentration thereof is 0.04 M, b. precipitating a solid calcium-protein-tripolyphosphate complex by raising the pH of the so-treated waste to a pH of 7.0, and c. separating the effluent from the solid calcium-protein-tripolyphosphate complex precipitate.
Claim 11
Dependent Claim
81 words
A process for treating proteinaceous waste water obtained in the separation of starch and gluten from wheat flour, which comprises: a. adding to the proteinaceous waste water sodium hexametaphosphate until the concentration thereof is 0.0025 M and ferric chloride until the concentration thereof is 0.0025 M, b. precipitating a solid ferric-protein-phosphate complex by raising the pH of the so-treated waste to a pH of 7.0 by addition of sodium hydroxide, and c. separating the effluent from the solid ferric-protein-phosphate complex precipitate.
Claim 12
Dependent Claim
81 words
A process for treating proteinaceous waste water obtained in the separation of starch and gluten from wheat flour, which comprises: a. adding to the proteinaceous waste water sodium hexametaphosphate until the concentration thereof is 0.0025 M and ferric chloride until the concentration thereof is 0.0025 M, b. precipitating a solid ferric-protein-phosphate complex by raising the pH of the so-treated waste to a pH of 7.0 by addition of sodium hydroxide, and c. separating the effluent from the solid ferric-protein-phosphate complex precipitate.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-04 | 1979-02-03 | 1979-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-04 | 1983-02-03 | 1983-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-04 | 1987-02-03 | 1987-08-05 | $7700.00 | Window Closed / Lapsed |