Abstract: A method to reduce or eliminate N-heterocycles, the method providing one or more environmentally benign chelators (EBCs) to an aqueous cooling system, the aqueous cooling system having at least one N-heterocycle in the presence of a halogenating or non-halogenating oxidizer. A method to reduce or eliminate AOX, the method providing one or more environmentally benign chelators (EBCs) to an aqueous cooling system, the aqueous cooling system having at least one AOX-containing species in the presence of a halogenating biocide.

Abstract: A method to reduce or eliminate N-heterocycles, the method providing one or more environmentally benign chelators (EBCs) to an aqueous cooling system, the aqueous cooling system having at least one N-heterocycle in the presence of a halogenating or non-halogenating oxidizer. A method to reduce or eliminate AOX, the method providing one or more environmentally benign chelators (EBCs) to an aqueous cooling system, the aqueous cooling system having at least one AOX-containing species in the presence of a halogenating biocide.

Abstract: Methods are provided to inhibit corrosion in low hardness water systems. The corrosion inhibiting treatment comprises: calcium salts of low molecular weight polymer polycarboxylic acids. These calcium salts may be added preformed to the water system in need of treatment or formed in-situ in the system. This method of corrosion inhibition is not a source of addition phosphorous or heavy metal to the treated system.

Abstract: Methods are provided to inhibit corrosion in low hardness water systems. The corrosion inhibiting treatment comprises: calcium salts of low molecular weight polymer polycarboxylic acids. These calcium salts may be added preformed to the water system in need of treatment or formed in-situ in the system. This method of corrosion inhibition is not a source of addition phosphorous or heavy metal to the treated system.

Abstract: Compositions and methods for inhibiting corrosion of metallic surfaces in contact with an aqueous medium such as copper, copper alloy, and steel surfaces of an open recirculating cooling water system. In certain embodiments, an aromatic triazole having an anionic substituent bonded to a nitrogen atom of the triazole (ANST) is used as the corrosion inhibitor. In other embodiments, the corrosion inhibitor is a reaction product of an aromatic triazole and an aldehyde (ATA).

Abstract: A method to reduce or eliminate N-heterocycles, the method providing one or more environmentally benign chelators (EBCs) to an aqueous cooling system, the aqueous cooling system having at least one N-heterocycle in the presence of a halogenating or non-halogenating oxidizer. A method to reduce or eliminate AOX, the method providing one or more environmentally benign chelators (EBCs) to an aqueous cooling system, the aqueous cooling system having at least one AOX-containing species in the presence of a halogenating biocide.

Abstract: Methods and compositions for dispersing a biofilm in an aqueous stream using fatty acids are disclosed. The fatty acids may have the formula: R1-R5—CH3 wherein R1 is an aryl or arylalkyl, —COR2, —COOR2, or —CONR3R4, —PO3(R2)3; R2 is H, an alkyl, an aryl or arylalkyl, or a halide; R3 and R4 may be the same or different and are H, a hydroxyl, an alkyl, an aryl or arylalkyl, a halide, or a sulfo (sulfonic acid group); R5 is an aliphatic chain having 2-30 carbon atoms and at least one double bond; and wherein when R1 is —COOH and R5 has eight carbon atoms and the FA has only one double bond, such double bond is not on the number 2 carbon.

Abstract: Compositions and methods for inhibiting corrosion of metallic surfaces in contact with an aqueous medium such as copper, copper alloy, and steel surfaces of an open recirculating cooling water system. In certain embodiments, an aromatic triazole having an anionic substituent bonded to a nitrogen atom of the triazole (ANST) is used as the corrosion inhibitor. In other embodiments, the corrosion inhibitor is a reaction product of an aromatic triazole and an aldehyde (ATA).

Abstract: Methods and compositions for dispersing a biofilm in an aqueous stream using fatty acids are disclosed. The fatty acids may have the formula: R1-R5—CH3 wherein R1 is an aryl or arylalkyl, —COR2, —COOR2, or —CONR3R4, —PO3(R2)3; R2 is H, an alkyl, an aryl or arylalkyl, or a halide; R3 and R4 may be the same or different and are H, a hydroxyl, an alkyl, an aryl or arylalkyl, a halide, or a sulfo (sulfonic acid group); R5 is an aliphatic chain having 2-30 carbon atoms and at least one double bond; and wherein when R1 is —COOH and R5 has eight carbon atoms and the FA has only one double bond, such double bond is not on the number 2 carbon.

Abstract: A method for controlling protozoa trophozoites and cysts wherein one or more biocides or non-biocidal agents are encapsulated within a micro-capsule or nano-capsule and then introduced into an aqueous system. The micro-capsule or nano-capsule has an exterior composition adapted for digestion by the protozoa. A vesicle for controlling protozoa trophozoites and cysts is also provided.