IP Library Granted Patent US 12,168,619
Granted Patent B2
US 12,168,619 · App. 17/068,199 · Granted Dec 17, 2024

Compositions and methods to remove ammonia in freshwater and saltwater fish storage systems

Inventors: Norma Arcelia Alcantar (Tampa, FL); Wen Zhao (Phoenix, AZ)
Assignee: University of South Florida
C02F1/42C02F2101/16C02F2103/20C02F2303/16
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Quick Facts
Patent No.
US 12,168,619
App. No.
17/068,199
Granted
Dec 17, 2024
Kind
B2
Abstract

Compositions, systems and methods of removing ammonia from fish storage systems are presented. A chemical water conditioner comprised of sodium formaldehyde bisulfite, cornstarch, dye and alcohol was found to have a high ammonia removal efficiency in seawater. A combination of this chemical water conditioner with modified chabazite and phosphate buffer exhibited high ammonia removal efficiency in both seawater and freshwater.

Claims (14)

1. A method of controlling an ammonia level in a water environment comprising:

adding an amount of a water conditioner to the water environment wherein the water conditioner comprises:

an amount of sodium formaldehyde bisulfite;

an amount of cornstarch;

an amount of dye; and

an amount of alcohol.

2. The method of claim 1 , further comprising replacing at least ⅔ of water in the water environment with refill water daily.

3. The method of claim 1 , further comprising adding an ammonia removal agent comprising:

a freshwater or seawater modified chabazite compound and an amount of a phosphate buffer.

4. The method of claim 1 , wherein the water conditioner is added at least once per day.

5. The method of claim 1 , wherein a total amount of water conditioner added to the water environment per day is less than or equal to 1 g/L.

6. The method of claim 1 , wherein the water environment is contained within a fish storage system.

7. The method of claim 6 , wherein the water conditioner is first added to the storage system within 3 hours of fish being contained within the storage system.

8. The method of claim 1 , wherein the amount of sodium formaldehyde bisulfite is about 10 g, the amount of cornstarch is about 1 g, the amount of dye is about 0.15 g, and the amount of alcohol is about 1 mL.

Assignments (2)
CONFIRMATORY LICENSE Recorded Oct 4, 2021
From: UNIVERSITY OF SOUTH FLORIDA
To: NATIONAL SCIENCE FOUNDATION
Reel/Frame 057697/0763 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 16, 2020
From: ALCANTAR, NORMA ARCELIA; ZHAO, WEN
To: UNIVERSITY OF SOUTH FLORIDA
Reel/Frame 054075/0405 →
Continuity (3)
Continuation PCTUS2019028740 · Apr 23, 2019
Provisional Application 62661202 · Apr 23, 2018
Related Publication 20210029977A1 · Feb 4, 2021