METHODS OF PREPARING NOVEL HALIDE ANION FREE QUATERNARY AMMONIUM SALT MONOMERS, POLYMERIZATION METHODS THEREFOR, AND METHODS OF USE OF THE RESULTING POLYMERS

Methods are provided for making halide-free quaternary ammonium salt monomers. Polymers prepared from the monomers and methods of using the polymers to clarify raw, untreated water or wastewater are also disclosed. 1. Method of forming diallyldialkylammonium anion monomer comprising reacting diallyldialkylammonium chloride and an anion contributing metathesis agent in an aqueous solution to yield a precipitate and diallyldialkylammonium anion , and removing said precipitate from said solution.2. Method as recited in wherein said anion contributing metathesis agent is a member selected from potassium acetate claim 1 , potassium methanesulfonate claim 1 , and potassium acrylate claim 1 , said precipitate being KCl.3. Method as recited in wherein said anion contributing metathesis agent is potassium acetate claim 2 , said diallyldialkylammonium chloride is diallyldimethylammonium chloride and said diallyldialkylammonium anion monomer is diallyldimethylammonium acetate monomer.4. Method as recited in wherein said KCl is filtered to remove it from said solution.5. Method of forming a nonchloride containing quaternary ammonium salt anion monomer from a quaternary ammonium salt chloride precursor claim 2 , said method comprising reacting said precursor with an anion metathesis agent in an aqueous medium to yield a precipitate and said nonchloride containing quaternary ammonium salt anion monomer claim 2 , and removing said precipitate from said aqueous medium.6. Method as recited in wherein said precursor is diallyldialkylammonium chloride claim 5 , said anion metathesis agent being selected from potassium acrylate claim 5 , potassium methansulfonate claim 5 , and potassium acetate claim 5 , said precipitate being KCl.7. Method as recited in wherein said precursor is diallyldimethylammonium chloride claim 6 , said anion metathesis agent being potassium acetate claim 6 , and said nonchloride containing ammonium salt monomer is diallyldimethylammonium acetate (DADMOAC).9. ...

METHODS OF CONDITIONING MIXED LIQUOR USING WATER SOLUBLE QUATERNARY AMMONIUM STARCHES

Disclosed is a method of conditioning mixed liquor in membrane bioreactor (MBR) systems comprising adding an effective amount of a treatment composition comprising a water soluble cationic quaternary ammonium starch or a water soluble quaternary ammonium starch/gum blend to the mixed liquor. Also disclosed is a method of improving flux in an MBR system comprising adding the treatment composition to the mixed liquor of the MBR. 1. A method of treating mixed liquor in a membrane bioreactor (MBR) system comprising adding an effective amount of a treatment composition to the mixed liquor , said treatment composition comprising a member selected from the group consisting of a 1) water soluble cationic quaternary ammonium starch and a 2) water soluble quaternary ammonium starch/gum blend.3. A method according to wherein the starch is selected from the group consisting of corn claim 2 , potato tapioca claim 2 , sago claim 2 , wheat claim 2 , waxy maize claim 2 , grain sorghum claim 2 , grain starches claim 2 , and dextrin.4. A method according to wherein the degree of substitution of the composition is in the range of 0.2 to 1.2.5. A method according to wherein the degree of substitution of the composition is in the range of 0.1 to 1.8.6. A method according to wherein the water soluble quaternary ammonium starch is mixed with the mixed liquor prior to being brought into direct contact with the membrane surface.7. The method of wherein the mixing is accomplished by feeding the water soluble cationic quaternary ammonium starch into an area of the MBR where an intensive mixing occurs.8. The method of wherein the mixing is accomplished by feeding the water soluble cationic quaternary ammonium starch into an area of the MBR where sufficient mixing time occurs.9. The method of wherein said treatment composition is fed to said mixed liquor in an amount of about 5 ppm to about 1 claim 1 ,000 ppm.11. A method according to wherein the gum is selected from the group consisting of ...

Methods of preparing novel halide anion free quaternary ammonium salt monomers, polymerization methods therefor, and methods of use of the resulting polymers

Methods are provided for making halide-free quaternary ammonium salt monomers. Polymers prepared from the monomers and methods of using the polymers to clarify raw, untreated water or wastewater are also disclosed.

Methods for recovering tallow from wastewater

Cationic polymer for water clarification and sludge dewatering

ABSTRACT Methods of clarifying wastewater and of dewatering sludge are disclosed. The methods comprise adding to the wastewater or the sludge an effective amount for the purpose of a polymer comprising repeat unit moieties of methacryloyloxyethyl trimethyl ammonium chloride, said polymer having an intrinsic viscosity from about 1.0 to about 4.5 dl/g.

Methods for removing metals from plating operation

The present invention relates to compounds and methods for removing metals, e.g., ionic cobalt from an electroless plating operation, preferably to levels less than 5 ppm. The metals can then be either landfilled or regenerated for electrowinning and reuse. The invention utilizes an ion exchange media comprised of a silica backbone and functionalized with phosphonate groups.

Methods of preparing halide anion free quaternary ammonium salt monomers, polymerization methods therefor, and methods of use of the resulting polymers

Methods are provided for making halide-free quaternary ammonium salt monomers. Polymers prepared from the monomers and methods of using the polymers to clarify raw, untreated water or wastewater are also disclosed.

Flocculation of coal fines with poly-electrolytes and electrolyte

Coal fines are flocculated from an aqueous suspension by adding an anionic polyelectrolyte, a soluble calcium salt, and a cationic polyelectrolyte to the suspension. The anionic polyelectrolyte is preferably a high charge density, high molecular weight acrylic acid/acrylamide copolymer or a high charge density high molecular weight terpolymer of acrylic acid/methacrylic acid/ethylacrylate. The cationic polyelectrolyte is preferably a high molecular weight, low charge density dimethylamino methylmethacrylate methyl chloride quaternary ammonium salt/acrylamide copolymer, an N,N dimethyl 2 hydroxy propyl imine homopolymer of low molecular weight, a diallyl dimethyl ammonium chloride polymer, or ter polyepichlorohydrin dimethyl amine.

Methods of preparing halide anion free quaternary ammonium salt monomers, polymerization methods therefor, and methods of use of the resulting polymers

Methods are provided for making halide-free quaternary ammonium salt monomers. Polymers prepared from the monomers and methods of using the polymers to clarify raw, untreated water or wastewater are also disclosed.

Formation of disperse-slurry of H-coal residue

The problem of creaming during formation of disperse-slurry of H-coal residue by ball milling with water is eliminated by use, as an anti-creaming additive, of the triethanolamine salt of dodecylbenzene sulfonic acid.

Methods for recovering tallow from wastewater

A method for recovering tallow from meat processing wastewater includes adding a coagulant composition to the wastewater to agglomerate suspended fat, oil and grease particles in the wastewater, separating solid waste materials from the wastewater and isolating tallow from the solid waste materials. The coagulant composition includes tannin.

Methods of preparing novel halide anion free quaternary ammonium salt monomers, polymerization methods therefor, and methods of use of the resulting polymers

METHODS ARE PROVIDED FOR MAKING HALIDE-FREE QUATERNARY AMMONIUM SALT MONOMERS. POLYMERS PREPARED FROM THE MONOMERS AND METHODS OF USING THE POLYMERS TO CLARIFY RAW, UNTREATED WATER OR WASTEWATER ARE ALSO DISCLOSED.

Method for odor control

Quaternized polyvinylamine water clarification agents

The use of quaternized polyvinylamines for use in water clarification is disclosed.

Method for removing mercury from wastewater and other liquid streams

A method for reducing the amount of Mercury in a liquid stream, such as an aqueous wastewater or process water stream or a non-aqueous liquid hydrocarbonaceous stream is disclosed wherein the liquid stream is contacted with an effective amount of a Hg-complexing agent, the mercury contaminants in the liquid stream form insoluble complexes with the Hg-complexing agent, then the insoluble complexes are removed from the liquid stream via microfiltration or ultrafiltration techniques including the use of submerged hollow fiber ultrafilters or the like.

Cationic polymers for sludge dewatering

A method of dewatering sludge is disclosed. This method comprises adding to the sludge an effective amount for the purpose of a polymer comprising repeat unit moieties of the compound methacryloxyethyl trimethyl ammonium chloride, said polymer having an intrinsic viscosity of about 1.0 to about 4.5 dl/g.

Modified polymeric flocculants with improved performance characteristics

Methods for the preparation of high molecular weight cationic poly(meth) acrylamide/quaternary ammonium salt copolymers are disclosed wherein after a t least about 50% of the monomers have been polymerized, a cross-linking agent is then added to the reaction mixture on a continuous basis and in the absen ce of any feed of chain transfer agent. Cationic copolymers so produced exhibit improved floc formation properties and are useful as flocculants and dewatering aids in aqueous systems that include an oily sludge or the like.< /SDOAB>

Quaternized polyvinylamine water clarification agents

The use of quaternized polyvinylamines for use in water clarification is disclosed.

Methods for the flocculation of coal fines and insoluble metals in coal mine waters

ABSTRACT Coal fines and suspended insoluble metals are flocculated from coal mine drainage waters by adding a polymeric tannin-amine compound.

Detoxification of quaternary ammonium compounds with lignosulfonates

Detoxification of quaternary ammonium compounds using detoxifying amounts of lignosulfonate.

Methods for sludge dewatering.

Procedures for the preparation of new monomers of quaternary ammonium salts without halide anions, polymerization processes for this purpose and procedures for using the resulting polymers

Un procedimiento para aclarar agua que comprende añadir a dicha agua un coagulante en la cantidad de 0,25- 500 ppm en base a un millón de partes de dicha agua, siendo dicho coagulante acetato de polidialildimetilamonio (PDADMOAC) preparado usando un monómero de acetato de dialildimetilamonio (DADMOAC) formado: haciendo reaccionar cloruro de dialildimetilamonio y un agente de metátesis que aporte aniones en una solución acuosa para dar un precipitado y un anión de dialildimetilamonio y retirando dicho precipitado de dicha solución; en el que dicho agente de metátesis que aporta aniones es acetato de potasio y dicho precipitado es KCl.

Aqueous slurries of solid carbonaceous fuel

Aqueous slurries of solid carbonaceous fuel that include a novel highly converted sulfonated surfactant derived from a suspension of low rank coal and coal derived creosote oil for reducing the viscosity and increasing the solids content of the aqueous slurry.

Methods for sludge dewatering

Método de acondicionamiento de licor mixto usando almidones de amonio cuaternario solubles en agua

Un método para tratar licor mixto en un sistema de biorreactor de membrana (MBR) para incrementar la velocidad de flujo del licor mixto, que comprende añadir una cantidad eficaz de una composición de tratamiento al licor mixto, comprendiendo dicha composición de tratamiento un miembro seleccionado del grupo que consiste en un 1) almidón de amonio cuaternario catiónico soluble en agua y un 2) mezcla de almidón de amonio cuaternario catiónico soluble en agua/goma, conteniendo la mezcla entre 0,7 y 3% en peso de goma y 7 a 30% en peso de almidón, y teniendo una cantidad suficiente de almidón de amonio cuaternario/goma para asegurar una carga catiónica en el intervalo de 0,2 a 2,0 meq/g, en la que la cantidad suficiente de almidón de amonio cuaternario catiónico soluble en agua/goma es 2 a 50% en peso, y preferiblemente 7 a 33% en peso, hacer pasar después dicho licor mixto con dicha composición de tratamiento en él a través de una membrana escogida del grupo que consiste en membranas de ultrafiltración, microfiltración y nanofiltración, en la que dicho almidón de amonio cuaternario catiónico soluble en agua tiene la fórmula:**Fórmula** en la que X es cualquier anión monovalente, incluyendo cloruro, bromuro, yoduro, metilsulfato; Y se selecciona del grupo que consiste en 2, 3 epoxi propilo, 3-halo-2-hidroxi propilo, 2 haloetilo, o, p, o m (αhidroxi-β halo etil) bencilo; R1, R2, y R3 se seleccionan independientemente del grupo que consiste en hidrógeno, hidroxilo, alquilo, alquilo sustituido, arilo y alcarilo, y en la que dos de los R se pueden unir para formar un compuesto anular heterocíclico o un compuesto anular homocíclico, en el que además el número total de carbonos en los tres R1, R2, y R3 no debería exceder alrededor de 14 carbonos, con la condición de que si los tres R1, R2, y R3 son diferentes y R3 contiene más de 3 átomos de carbono pero no más de 12, entonces R1 y R2 son del grupo que consiste en metilo y etilo; y si R1 y R2 se unen para formar un compuesto ...

Polymeric chelant and coagulant to treat metal-containing wastewater

The present invention is directed to the use of a combination of a polymeric chelant and coagulant to treat metal containing wastewater. More particularly, the invention is directed at removing copper from CMP wastewater. The composition includes a combination of (a) a polymeric chelant derived from a polyamine selected from the group consisting of diethylenetriamine (DETA), triethylenetetraamine (TETA), tertraethylenepentaamine (TEPA), poly[vinylamine], and branched or linear poly[ethylenimine] (PEI); and (b) a water soluble or dispersible copolymer of a tannin and a cationic monomer selected from the group consisting of methyl chloride or dimethyl sulfate quaternary salt of dimethyl aminoethyl acrylate, diethylaminoethyl acrylate, dimethylaminoethyl methacrylate, diethylaminoethyl methacrylate, dimethylaminopropyl methacrylamide, dimethylaminopropyl acrylamide, and diallyl dimethyl ammonium chloride.

Methods of conditioning mixed liquor using water soluble quaternary ammonium starches

Disclosed is a method of conditioning mixed liquor in membrane bioreactor (MBR) systems comprising adding an effective amount of a treatment composition comprising a water soluble cationic quaternary ammonium starch or a water soluble quaternary ammonium starch/gum blend to the mixed liquor. Also disclosed is a method of improving flux in an MBR system comprising adding the treatment composition to the mixed liquor of the MBR.

Methods of conditioning mixed liquor using water soluble quaternary ammonium starches

Methods of conditioning mixed liquor using water soluble quaternary ammonium starches

Disclosed is a method of conditioning mixed liquor in membrane bioreactor (MBR) systems comprising adding an effective amount of a treatment composition comprising a water soluble cationic quaternary ammonium starch or a water soluble quaternary ammonium starch/gum blend to the mixed liquor. Also disclosed is a method of improving flux in an MBR system comprising adding the treatment composition to the mixed liquor of the MBR.

Metodos para tratar licor mixto en un sistema bioreactor de membrana que comprende agregar composicion de tratamiento al licor mixto utilizando dicha composición que comprende almidones de amonio cuaternario cationico solubles en agua/goma.

Métodos para tratar licor mixto en un sistema bioreactor de membrana que comprende agregar composición de tratamiento al licor mixto utilizando dicha composición que comprende almidones de amonio cuaternario catiónico solubles en agua/goma.

método para tratamento de licor misto em um sistema de biorreator de membrana (mbr)

Polymeric chelant and coagulant to treat metal-containing wastewater

Polymeric chelant and coagulant to treat metal-containing wastewater

The present invention is directed to the use of a combination of a polymeric chelant and coagulant to treat metal containing wastewater. More particularly, the invention is directed at removing copper from CMP wastewater. The composition includes a combination of (a) a polymeric chelant derived from a polyamine selected from the group consisting of diethylenetriamine (DETA), triethylenetetraamine (TETA), tertraethylenepentaamine (TEPA), poly[vinylamine], and branched or linear poly[ethylenimine] (PEI); and (b) a water soluble or dispersible copolymer of a tannin and a cationic monomer selected from the group consisting of methyl chloride or dimethyl sulfate quaternary salt of dimethyl aminoethyl acrylate, diethylaminoethyl acrylate, dimethylaminoethyl methacrylate, diethylaminoethyl methacrylate, dimethylaminopropyl methacrylamide, dimethylaminopropyl acrylamide, and diallyl dimethyl ammonium chloride.