KR920020017A - Dehalogenation of Organohalogen-containing Compounds - Google Patents

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Dehalogenation of Organohalogen-containing Compounds

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Claims (22)

A. To an aqueous composition comprising a nitrogen-free organohalogen compound and a nitrogen-containing cationic polymer, the nitrogen-containing cationic polymer is added an enzyme capable of dehalogenating the nitrogen-free organohalogen compound without substantial damage, and B. the nitrogen ratio Reducing the amount of nitrogen-free organohalogen compounds by treating the aqueous composition, which comprises dehalogenating the containing organohalogen compounds to provide usable forms of nitrogen-containing cationic polymers having reduced amounts of nitrogen-free organohalogen compounds. How to let. The method of claim 1, wherein the nitrogen-containing cationic polymer comprises at least one member selected from polyaminoamide-epichlorohydrin resin, epoxidized polyamide resin and epichlorohydrin resin, wherein the enzyme is 5x10 Added in microbial form in an amount of ⁷ cells / ml. The microorganism of claim 2, wherein the microorganism is Coryneform organism 1, Agrobalcterium biovar I, Pseudomonas cepacia, Arthrobacter sp, Agrobacter spp. A method comprising at least one member selected fromium biobar III, coryneform organism 2, Arthrobacter histidinolovorans and Agrobacterium tumefaciens. The method of claim 2, wherein the microorganism comprises at least one member selected from NCIMB 40271, NCIMB 40272, NCIMB 40273, NCIMB 40274, NCIMB 40313, and NCIMB 40383. 4. The method of claim 3, wherein the nitrogen-free organohalogen compound comprises at least one member selected from nitrogen-free, nonpolymeric, halogen-containing alcohols and nitrogen-free haloalkylene oxides. The dihaloalkane of claim 5, wherein the nitrogen-free, non-polymeric, halogen-containing alcohol is of the general formula X—CH ₂ CH (OH) (CH ₂ ) n X, wherein n and X are as defined below. Ol and at least one member selected from haloalkanediols having the general formula HO-CH ₂ CH (OH) (CH ₂ ) n X wherein n is an integer from 1 to 4 and X is a halogen; Reducing to less than 950 ppm based on this wet weight of nitrogen-free, non-polymeric, halogen-containing alcohols. The method of claim 6, wherein the dihaloalkanol comprises at least one member selected from 1.3-dichloro-2-propanol and 1,4-dichloro-2-butanol, and the haloalkanediol 1-chloro-3,4 At least one member selected from -propanediol and 1-chloro-2,3-propanediol, wherein the amount of 1,3-dichloro-2-propanol is reduced to less than 5 ppm on a wet weight basis; The amount of chloro-2,3-propanediol is reduced to less than 5 ppm on a wet weight basis. The aqueous composition of claim 1, wherein the aqueous composition is about 0.1 to 25% by weight of the nitrogen-containing cationic polymer and (B) the aqueous composition, based on the weight of the (A) aqueous composition. A nitrogen-free organic halogen compound of; Wherein the method further comprises an enzyme in the aqueous composition in an amount of about 2.5 × 10 ⁻⁶ to 1 × 10 ⁻⁴ weight% based on the weight of the composition. A. An environmental sample containing the mixed microbial population is added to the nitrogen-containing polymer and the nitrogen-free organohalogen compound, B. In the presence of the nitrogen-containing polymer and the organo free halogen compound, the mixed microbial population is cultured, and C Isolating dehalogenase-containing microorganisms from the cultured microbial population, and D. accumulating dehalogenase-containing microorganisms comprising culturing a population of dehalogenase-containing microorganisms to a concentration of at least 5 × 10 ⁷ cells / ml. , Isolation and culture. 10. The method according to claim 9, wherein the dehalogenating enzyme-containing microorganism is Coryneform organism 1, Agrobacterium Biobar I, Pseudomonas Sephacia, Atrobacter sp., Agrobacterium Biobar III, Coryneform organism 2, Atrocacter A passaging step comprising at least one member selected from histidinoloborens and Agrobacterium tumethifaens, and adding increasing concentrations of nitrogen-free organohalogen compounds to the mixed microbial population; Method for culturing the mixed microbial population by performing 5 to 5 times. A. A nitrogen-containing cationic polymer, B. A nitrogen-free organohalogen compound, C. An aqueous composition in a usable form comprising an enzyme capable of dehalogenating a nitrogen-free organohalogen compound without substantially damaging the polymer. The method of claim 11, wherein the nitrogen-containing cationic polymer comprises at least one member selected from polyaminoamide-epichlorohydrin resin, epoxidized polyamide resin, and epichlorohydrin resin; (A) a nitrogen-containing cationic polymer is present in the composition in an amount of about 1 to 50% by weight based on the weight of the composition, and (B) the nitrogen-free organic halogen compound is a nitrogen-free, nonpolymeric, halogen-containing alcohol. And at least one member selected from nitrogen-free haloalkylene oxides, wherein the enzyme is present in the composition in an amount from about 0.1 to 25 ppm by weight of the composition, wherein the enzyme is Coryneform Organism 1, Agrobaterium Biobar I , Pseudomonas Sephacia, Acrobacter Species, Agrobacterium Biobar III, Coryneform Organism 2, Acrobacter Histidinoloborans, and Agrobacterium Tumefaciens. Composition. A. Nitrogen-containing cationic polymers B. Microbial residues present in an amount of up to about 100 g of microbial residue per tonne of dry paper product, wherein the microorganisms are enzymes capable of dehalogenating nitrogen-free organohalogen compounds without substantially damaging the polymer. Paper products). The method of claim 13, wherein the nitrogen-free organohalogen compound comprises less than 0.1 ppm on a dry weight basis, wherein the nitrogen-containing cationic polymer is a polyaminoamide-epichlorohydrin resin, an epoxidized polyamide resin and an epichlorohydrin resin. At least one member selected from the group consisting of about 0.1 to 6% by weight based on the dry weight of the paper product, microbial residue is present in an amount of about 2,5 to 100g per ton of dry paper product, Selected from four-type organisms 1, Agrobacterium Biobar I, Pseudomonas Sephacia, Atrobacter Species, Agrobacterium Biobar III, Coryneform organism 2, Atrobacter histidinoloborans and Agrobacterium tumefaciens A paper product comprising at least one member. A. A stream of an aqueous composition comprising a nitrogen-free organohalogen compound and a nitrogen-containing cationic polymer is continuously run in a reactor containing an enzyme capable of dehalogenating the nitrogen-free organohalogen compound without substantially damaging the polymer. B. The stream of aqueous composition is fed in contact with the enzyme continuously for a time of contact such that at least a portion of the nitrogen-free organohalogen compound is dehalogenated to produce a treated product, and C. the treated product is continuously removed from the reactor. Continuous treatment method of an aqueous composition comprising the step of. The method of claim 15, wherein the nitrogen-containing cationic polymer comprises at least one member selected from polyaminoamide-epichlorohydrin resin, epoxidized polyamide resin, and epichlorohydrin resin, wherein the enzyme is coryneform. At least one selected from organism 1, Agrobacterium Biobar I, Pseudomonas Sephacia, Atrobacter sp. In a microbial form comprising one member, wherein A. the residence time of the nitrogen-containing cationic polymer in the reactor is about 6.5 to 15 hours, and B. the nitrogen ratio of the treated product to about 0.1 ppm to 500 ppm by weight C. The treated product has a concentration of containing organohalogen compounds, and C. The treated product is about 1-50 weight based on the weight of the treated product A concentration of nitrogen-containing cationic polymer in an amount of%, and D. nitrogen-free organohalogen compounds include 1-chloro-2,3-epoxy propane, 1-bromo-2,3-epoxypropane, 1-chloro- Selected from 3,4-epoxybutane, 1,3-dichloro-2-propanol, 1-chloro-2,3-propanediol, 1,4-dichloro-2-butanol and 1-chloro-3,4-propanediol At least one member, and wherein the concentration of microorganisms in the reactor is at least about 5 × 10 ⁷ cells / ml. A. A batch of an aqueous composition comprising a nitrogen-free organohalogen compound and a nitrogen-containing cationic polymer is placed in a reactor containing an enzyme capable of dehalogenating the nitrogen-free organohalogen compound without substantially damaging the nitrogen-containing polymer. B. The aqueous mixture is contacted with enzyme and contact time for the biocatalyst to dehalogenize the nitrogen-free organohalogen compound to produce a batch of treated products, and C. The treated product is transferred from the reactor Batch treatment method of the modified composition comprising the step of removing. The method of claim 17, wherein the nitrogen-containing cationic polymer comprises at least one member selected from polyaminoamide-epichlorohydrin resin, epoxidized polyamide resin and epichlorohydrin resin, wherein the enzyme is coryneform organism 1 At least one selected from: Agrobacterium Biobar I, Pseudomonas Sephacia, Atrobacter Species, Agrobacterium Biobar III, Coryneform Organism 2, Atrobacter histidinoloborans, and Agrobacterium Tumefaciens Present in microbial form comprising members of; A. The concentration of the nitrogen-containing cationic polymer is about 1 to 50% by weight based on the weight of the composition in the reactor, and B. The initial concentration of the nitrogen-free organohalogen compound is about 0.005 to 2.6 weight by weight of the composition in the reactor %, C. microorganisms are present at a concentration of at least 5 × 10 ⁷ cells / ml based on the weight of the composition in the reactor, and D. microorganisms are contacted with a nitrogen-free organohalogen compound for a period of about 2 to 56 hours And, E. The final concentration of the nitrogen-free organohalogen compound is from about 0.1 to 500 ppm based on the weight of the composition in the reactor. A. A stream of an aqueous composition comprising a nitrogen-free organohalogen compound and a nitrogen-containing cationic polymer is continuously connected to a reactor containing an enzyme capable of dehalogenating the nitrogen-free organohalogen compound without substantially damaging the polymer. B. The stream of the aqueous composition and the enzyme are continuously contacted for about 2 to 56 hours of contact time to produce a treated product, C. partially drained from the reactor, and D. at the same rate as in the continuous process Or stopping the removal of the treated product from the reactor while continuously feeding the aqueous composition to the reactor at a reduced rate, and E. after the stopping process, restarting the removal of the treated product from the reactor. Semi-continuous treatment method of a modified composition. A. A stream of an aqueous composition comprising a nitrogen-free organohalogen compound and a nitrogen-containing cationic polymer is continuously connected to a reactor containing an enzyme capable of dehalogenating the nitrogen-free organohalogen compound without substantially damaging the polymer. And the B. stream of the aqueous composition and the enzyme are continuously contacted for a contact time of about 2 to 56 hours to produce a treated product, C. the treated product is continuously removed from the reactor, and D. (iii) Supplying the reactor with a stream of the aqueous composition to the reactor, (ii) periodically removing all of the treated product from the reactor, and E. subsequently feeding the reactor with a stream of the aqueous composition to the reactor as well. Semi-continuous of the aqueous composition, including periodically restarting all steps of removal from the Method. 21. The method of claim 20, wherein said periodic about 2 to 56 hours, said nitrogen-containing cationic polymer is at least one member selected from polyaminoamide-epichlorohydrin resins, epoxidized polyamide resins and epichlorohydrin resins. Wherein the enzyme is Coryneform organism 1, Agrobacterium Biobar I, Pseudomonas Sephacia, Atrobacter spezes, Agrobacterium Biobar III, Coryneform organism 2, Atlobacter histithenoloboranth and Agro At least one member selected from Bacterium tumefaciens, A. Nitrogen-containing cationic polymer is present in the composition in a continuous process in an amount of from about 0.1 to 50% by weight, Ii) present in the composition in an amount of about 0.005 to 2.6% by weight, based on the weight of the composition of the nitrogen-free organohalogen compound, 1-chloro-2,3- Foxypropane, 1-Bromo-2,3-epoxypropane, 1-chloro-3,4-epoxybutane, 1,3-dichloro-2-propanol, 1-chloro-2,3-propanediol, 1,4 At least one member selected from -dichloro-2-butanol and 1-chloro-3,4-propanediol, (ii) the microorganism is present in the reactor in an amount of at least about 5x10 ⁷ cells / ml, and B (I) the polymer is present in the reactor in an amount of about 1 to 50% by weight, based on the weight of the composition in the reactor, during the period of stopping supply of the modified composition to the reactor and removing of the treated product from the reactor; (Ii) a nitrogen-free organohalogen compound is present in the reactor at an initial concentration of about 0.005 to 2.6 weight percent based on the weight of the composition in the reactor, and (iii) the microorganism is present in an amount of at least 5 × 10 ⁷ cells / ml The weight of the composition in the reactor, wherein the organohalogen-free nitrogen-containing organic halogen compound is present in the reactor Present in the reactor at a final concentration of less than 5 ppm. A. An aqueous composition comprising a nitrogen-containing cationic polymer and a nitrogen-free organohalogen compound, B. The nitrogen-containing polymer is an enzyme capable of dehalogenating the nitrogen-free organohalogen compound without substantially damaging the above. Adding to the aqueous composition and dehalogenating the C. nitrogen-free organohalogen compound to produce the treated product, and D. using the treated product as a wet paper medium blend in the papermaking process, ※ Note: The disclosure is based on the initial application.