Method for inhibiting microbial adhesion on surfaces

• US 5,736,058 A
• Filed: 12/20/1996
• Issued: 04/07/1998
• Est. Priority Date: 04/28/1995
• Status: Expired due to Fees

• Current Assignee: Hercules Incorporated (Ashland Global Holdings, Inc.)
• Original Assignee: BetzDearborn Inc. (Veolia Environnement SA)
• Inventors: Michalopoulos, Daniel L., Wright, J. Barry
• Primary Examiner(s): McCarthy, Neil
• Application Number:
  US08/769,473
• Time in Patent Office: 473 Days
• Field of Search: 210/698, 210/764, 210/928
• US Class Current: 210/764
• CPC Class Codes: C02F 1/50 by addition or application of a germicide or by oligodynamic treatment C02F1/4606, C02F1/467, C02F1/76 take precedence
• CPC Class Codes: C02F 5/10 using organic substances
• CPC Class Codes: Y10S 210/928 Paper mill waste, e.g. white water, black liquor treated

Abstract

A method for inhibiting the microbial adhesion on surfaces in contact with an aqueous system is disclosed, which comprises adding to the system a treatment comprising an alkylsulfosuccinate surfactant.

Claims

1. A method for inhibiting the microbial colonization of surfaces in contact with an aqueous system which comprises adding to said system an effective amount of an anionic alkylsulfosuccinate surfactant, said method substantially preventing the adhesion of microbes to said surfaces while preserving the viability of the microbes in said system, allowing for the discharge of the microbes from said system.

2. The method as recited in claim 1 wherein said alkylsulfosuccinate surfactant is a dialkylsulfosuccinate.

3. The method as recited in claim 2 wherein said dialkylsulfosuccinate is a dinonylsulfosuccinate.

4. The method as recited in claim 1 wherein at least about 0.5 ppm of said surfactant is added to the aqueous system.

5. The method as recited in claim 2 wherein said dialkylsulfosuccinate is a dioctylsulfosuccinate.

6. The method as recited in claim 2 wherein said dialkylsulfosuccinate is a didecylsulfosuccinate.

7. The method as recited in claim 1 wherein said aqueous system comprises a cooling water system.

8. The method as recited in claim 1 wherein said surfaces are acrylic, ceramic or metal.

9. The method as recited in claim 1 wherein said aqueous system comprises a pulping or papermaking system.

10. The method as recited in claim 1 wherein said aqueous system comprises a metal working system.

11. The method as recited in claim 1 wherein said aqueous system comprises an oil and gas system.

12. A method for inhibiting the microbial colonization of surfaces in contact with an aqueous system which comprises adding to said system an effective amount of an anionic dialkylsulfosuccinate surfactant, said method substantially preventing the adhesion of microbes to said surfaces while preserving the viability of the microbes in said system, allowing for the discharge of the microbes from said system.

13. The method as recited in claim 12 wherein said dialkylsulfosuccinate surfactant is a dinonylsulfosuccinate surfactant.

14. The method as recited in claim 12 wherein at least about 0.5 ppm of said surfactant is added to the aqueous system.

15. The method as recited in claim 12 wherein said dialkylsulfosuccinate surfactant is a dioctylsulfosuccinate.

16. The method as recited in claim 12 wherein said dialkylsulfosuccinate surfactant is a didecylsulfosuccinate.

17. The method as recited in claim 12 wherein said aqueous system comprises a cooling water system.

18. The method as recited in claim 12 wherein said surfaces are acrylic, ceramic or metal.

19. The method as recited in claim 12 wherein said aqueous system comprises a pulping or papermaking system.

20. The method as recited in claim 12 wherein said aqueous system comprises a metal working system.