Abstract: Methods for controlling the growth of bacteria in ethanol fermentation systems with antibiotic alternatives, which can be nonoxidizing biocides, stabilized oxidizers, or any combinations thereof, are described. As an option, a process or composition of the present invention can include one or more polycyclic antibacterial peptides. The methods can provide improvements, such as increased ethanol yields with minimal carryover of biocide into co-products of the processes.

Abstract: Methods for controlling the growth of bacteria in ethanol fermentation systems with antibiotic alternatives, which can be nonoxidizing biocides, stabilized oxidizers, or any combinations thereof, are described. As an option, a process or composition of the present invention can include one or more polycyclic antibacterial peptides. The methods can provide improvements, such as increased ethanol yields with minimal carryover of biocide into co-products of the processes.

Abstract: Methods for controlling the growth of bacteria in ethanol fermentation systems with antibiotic alternatives, which can be nonoxidizing biocides, stabilized oxidizers, or any combinations thereof, are described. As an option, a process or composition of the present invention can include one or more polycyclic antibacterial peptides. The methods can provide improvements, such as increased ethanol yields with minimal carryover of biocide into co-products of the processes.

Abstract: A method for reducing formation of deposits on a surface in contact with an aqueous system includes applying to the surface a composition comprising a polyoxypropylene-polyoxyethylene block copolymer and a biocide. The composition optionally may also include a dispersant.

Abstract: Compositions and methods for cleaning metal and non-metal surfaces utilizing a nonionic surfactant and an enzyme are disclosed. A composition comprised of at least one nonionic surfactant and at least one enzyme and having a pH of between 6 and 9.5 is specifically disclosed. A method for cleaning a surface using this composition, and a method for cleaning a surface using a first composition comprising at least one nonionic surfactant and a second composition comprising at least one enzyme are also disclosed.

Abstract: Synergistic antimicrobial combinations comprising 4,5-dichloro-2-N-octyl-4-isothiazolin-3-one and a mixture of a chlorinated isocyanurate and a bromide compound are disclosed. Methods for inhibiting microbial growth using these synergistic antimicrobial combinations are also disclosed.

Abstract: A method for inhibiting microbial colonization of a surface in contact with an aqueous system is disclosed, which comprises adding to the system an amount of at least one compound including repeating ethylene oxide units.

Abstract: The present invention provides a method for inhibiting the growth of filamentous microorganisms. The method includes the steps of adding effective amounts of a biocide and an enzyme. The enzyme of the present invention enhances the leakiness of the protective sheath around the filamentous microorganisms to allow the penetration of the biocide into the cells of the filamentous microorganisms.

Abstract: A method of attacking and removing microbial slime in slime covered surfaces and maintaining a slime-free surface as in exposed cooling tower surfaces and in waste water treatment and paper making. This method comprises utilizing an enzyme blend in 2 to 100 parts per million (ppm) of beta-glucanase, alpha-amylase and protease. Such enzyme blends have been found specifically to digest microbial slime and reduce microbial attachment and biofilm. A specific combination of polysaccharide degrading enzymes is a ratio of 2 parts beta-glucanase to 1 alpha-amylase to 1 protease utilized in 2-100 parts per million. Broadly, the alpha-amylase must be at least 1 and the protease may vary from 0.5 to 1 part.

Abstract: A method of attacking and removing microbial slime in slime covered surfaces and maintaining a slime-free surface as in exposed cooling tower surfaces and in waste water treatment and paper making. This method comprises utilizing an enzyme blend in 2 to 100 parts per million (ppm) of cellulase, alpha-amylase and protease. Such enzyme blends have been found specifically to digest microbial slime and reduce microbial attachment and biofilm. A specific combination of polysaccharide degrading enzymes is a ratio of 2 parts cellulase to 1 alpha-amylase to 1 protease utilized in 2-100 parts per million. Broadly, the alpha-amylase must be at least 1 and the protease may vary from 0.5 to 1 part.

Abstract: The method of adding to a nitrite corrosion inhibitor composition an effective amount of a bromosulfamate which is stable with respect to the nitrite corrosion inhibitor and provides an effective biocide, bactericide and fungicide. The composition using this bromosulfamate component to nitrite is utilized at about 0.1 to 10 ppm (residual) with an optimum of about 0.2 ppm of bromosulfamate. The bromosulfamate composition comprises reacting together sodium bromide (NaBr), sodium hypochlorite (NaOCl) or chlorine, and sodium sulfamate (NaSO.sub.3 NH.sub.2) or sulfamic acid, and using the product "fresh" in treating the nitrite solution.

Abstract: A method of attacking and removing microbial slime in slime covered surfaces and maintaining a slime-free surface as in exposed cooling tower surfaces and in waste water treatment and paper making. This method comprises utilizing an enzyme blend in 2 to 100 parts per million (ppm) of cellulase, alpha-amylase and protease. Such enzyme blends have been found specifically to digest microbial slime and reduce microbial attachment and biofilm. A specific combination of polysaccharide degrading enzymes is a ratio of 2 parts cellulase to 1 alpha-amylase to 1 protease utilized in 2-100 parts per million. Broadly, the alpha-amylase must be at least 1 and the protease may vary from 0.5 to 1 part.