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    153.
    发明专利
    未知

    公开(公告)号：BR9811492A

    公开(公告)日：2001-11-06

    申请号：BR9811492

    申请日：1998-07-27

    Applicant: BUCKMAN LABOR INC

    Inventor： MCNEEL THOMAS E ,  WHITTEMORE MARILYN S ,  BRYANT STEPHEN D ,  VUNK GRACIELA H

    IPC: A61K8/40 ,  A01N41/02 ,  A61K8/46 ,  A61Q11/00 ,  C02F1/50 ,  A61K7/22

    Abstract: The invention relates to a method to inhibit bacteria from adhering to a submergible surface. The method contacts the submergible surface with an effective amount of at least one sulfamic acid or salt thereof to inhibit bacterial adhesion to the submergible surface. The invention also relates to a method for controlling biofouling of an aqueous system. This method adds an effective amount of at least one sulfamic acid or salt thereof to inhibit bacteria from adhering to a submerged surface within the aqueous system. This method effectively controls biofouling without substantially killing the fouling organisms. The sulfamic acid used in the method of the invention has the formula R1R2NS(O)2(OH). In this formula, R1 and R2 are independently a hydrogen, a C4-C20 alkyl group or a cyclohexyl group. However, R1 and R 2 are not both hydrogen. Alternatively, R1 and R2, together with the N, may also form a 5-8 membered heterocyclic ring having the formula:In the heterocyclic ring, X is O, NH, or CH2. The salt of sulfamic acid can be an acid salt or quaternized sulfamic acid salt. The present invention also relates to a composition containing sulfamic acids or salts thereof useable in the above methods. The compositions comprise at least one sulfamic acid or salt thereof in an amount effective to inhibit bacteria from adhering to submergible or submerged surfaces.

    Process for the treatment of metal-containing water and recovery of metals thereofrom
    155.
    发明专利
    Process for the treatment of metal-containing water and recovery of metals thereofrom 未知

    公开(公告)号：AU720258B2

    公开(公告)日：2000-05-25

    申请号：AU1210199

    申请日：1999-01-15

    Applicant: BUCKMAN LABOR INC ,  UNIV COMMUNITY COLLEGE SYS NEV

    Inventor： MISRA MANORANJAN ,  KRAVETZ MARK E ,  YANG KANG ,  MCNEEL THOMAS E

    IPC: C02F1/58 ,  C01G49/00 ,  C02F1/62 ,  C02F1/64 ,  C02F1/66 ,  C02F1/70 ,  C02F1/72 ,  C02F9/00

    Abstract: Metals contained in various wastewaters are selectively recovered as metal precipitates and/or as spinel ferrite and water suitable for discharge into the environment is obtained. High grade magnetic spinel ferrite is recovered from wastewaters having aluminum and arsenic if present in the wastewater, removed from the wastewater. There are three process stages for the treatment of wastewater. In the first process stage which is optional, at least a portion of at least one non-ferrous or non-ferric metal is precipitated from the wastewater by subjecting the wastewater to an oxidizing agent to increase the oxidation-reduction potential of the water, by adjusting the pH of the wastewater to a pH at which the metal precipitates from the water and by adding an organic or inorganic sulfur compound, capable of causing the metal to form a precipitate, to the water in a quantity sufficient to precipitate the metal. When aluminum is present in the wastewater, aluminum is recovered from the water by adding a reducing agent to lower the oxidation-reduction potential of the water and by adjusting the pH of the water to about 5. The aluminum which precipitates in the aqueous solution, is removed from the water. In the third precipitation stage, iron is recovered as spinel ferrite in an ambient temperature process by adding a reducing agent to the water, adding a soluble ferrous salt to the water, adjusting the pH to about 9-12 and oxidizing the water with an oxidizer, e.g., air, to form spinel ferrite. If aluminum and/or arsenic are present in the wastewater and are removed from the wastewater by the process, high grade magnetic spinel ferrite is recovered.

    156.
    发明专利
    未知

    公开(公告)号：ES2136834T3

    公开(公告)日：1999-12-01

    申请号：ES95908498

    申请日：1995-01-12

    Applicant: BUCKMAN LABOR INC ,  UNIV COMMUNITY COLLEGE SYS NEV

    Inventor： MISRA MANORANJAN ,  KRAVETZ MARK E ,  YANG KANG ,  MCNEEL THOMAS E

    IPC: C02F1/58 ,  C01G49/00 ,  C02F1/62 ,  C02F1/64 ,  C02F1/66 ,  C02F1/70 ,  C02F1/72 ,  C02F9/00

    Abstract: Metals contained in various wastewaters are selectively recovered as metal precipitates and/or as spinel ferrite and water suitable for discharge into the environment is obtained. High grade magnetic spinel ferrite is recovered from wastewaters having aluminum and arsenic if present in the wastewater, removed from the wastewater. There are three process stages for the treatment of wastewater. In the first process stage which is optional, at least a portion of at least one non-ferrous or non-ferric metal is precipitated from the wastewater by subjecting the wastewater to an oxidizing agent to increase the oxidation-reduction potential of the water, by adjusting the pH of the wastewater to a pH at which the metal precipitates from the water and by adding an organic or inorganic sulfur compound, capable of causing the metal to form a precipitate, to the water in a quantity sufficient to precipitate the metal. When aluminum is present in the wastewater, aluminum is recovered from the water by adding a reducing agent to lower the oxidation-reduction potential of the water and by adjusting the pH of the water to about 5. The aluminum which precipitates in the aqueous solution, is removed from the water. In the third precipitation stage, iron is recovered as spinel ferrite in an ambient temperature process by adding a reducing agent to the water, adding a soluble ferrous salt to the water, adjusting the pH to about 9-12 and oxidizing the water with an oxidizer, e.g., air, to form spinel ferrite. If aluminum and/or arsenic are present in the wastewater and are removed from the wastewater by the process, high grade magnetic spinel ferrite is recovered.

    Methods and compositions for controlling biofouling using amino methyl phosphonic acids
    158.
    发明专利
    Methods and compositions for controlling biofouling using amino methyl phosphonic acids 未知

    公开(公告)号：AU8593298A

    公开(公告)日：1999-02-22

    申请号：AU8593298

    申请日：1998-07-27

    Applicant: BUCKMAN LABOR INC

    Inventor： MCNEEL THOMAS E ,  WHITTEMORE MARILYN S ,  BRYANT STEPHEN D ,  VUNK GRACIELA H

    IPC: A01N57/18 ,  C02F1/50

    Abstract: The invention relates to a method to inhibit bacteria from adhering to a submergible surface. The method contacts the submergible surface with an effective amount of at least one amino methyl phosphonic acid or salt thereof to inhibit bacterial adhesion to the submergible surface. The invention also relates to a method for controlling biofouling of an aqueous system. This method adds an effective amount of at least one amino methyl phosphonic acid or salt thereof to inhibit bacteria from adhering to a submerged surface within the aqueous system. This method effectively controls biofouling without substantially killing the fouling organisms. The amino methyl phosphonic acid used in the methods of the invention has the formula R1R2NCH2P(O)(OH)2. In this formula, R1 and R2 are independently a C6-C20 alkyl group or a CH2P(O)(OH)2 group. However, R1 and R2 are not both a CH2P(O)(OH)2 group. Alternatively, R1 and R2, together with the N, may also form a 5-8 membered heterocyclic ring having the formula: In the heterocyclic ring, X is O, NH, or CH2. The salt of an amino methyl phosphonic acid can be an acid salt or a quaternized amino methyl phosphonic acid salt. The invention also relates to a composition containing amino methyl phosphonic acids or salts thereof and useable in the above methods. The compositions comprise at least one amino methyl phosphonic acid or salt thereof in an amount effective to inhibit bacteria from adhering to submergible or submerged surfaces.

    Methods and compositions for controlling biofouling using sulfamic acids
    159.
    发明专利
    Methods and compositions for controlling biofouling using sulfamic acids 未知

    公开(公告)号：ZA986706B

    公开(公告)日：1999-02-04

    申请号：ZA986706

    申请日：1998-07-28

    Applicant: BUCKMAN LABOR INC

    Inventor： MCNEEL THOMAS E ,  WHITTEMORE MARILYN S ,  BRYANT STEPHEN D ,  GRACIELA H

    IPC: A01N41/02 ,  A61K8/46 ,  A61Q11/00 ,  A61K8/40 ,  C02F1/50 ,  C01B ,  C07C ,  A01N

    Abstract: The invention relates to a method to inhibit bacteria from adhering to a submergible surface. The method contacts the submergible surface with an effective amount of at least one sulfamic acid or salt thereof to inhibit bacterial adhesion to the submergible surface. The invention also relates to a method for controlling biofouling of an aqueous system. This method adds an effective amount of at least one sulfamic acid or salt thereof to inhibit bacteria from adhering to a submerged surface within the aqueous system. This method effectively controls biofouling without substantially killing the fouling organisms. The sulfamic acid used in the method of the invention has the formula R1R2NS(O)2(OH). In this formula, R1 and R2 are independently a hydrogen, a C4-C20 alkyl group or a cyclohexyl group. However, R1 and R 2 are not both hydrogen. Alternatively, R1 and R2, together with the N, may also form a 5-8 membered heterocyclic ring having the formula:In the heterocyclic ring, X is O, NH, or CH2. The salt of sulfamic acid can be an acid salt or quaternized sulfamic acid salt. The present invention also relates to a composition containing sulfamic acids or salts thereof useable in the above methods. The compositions comprise at least one sulfamic acid or salt thereof in an amount effective to inhibit bacteria from adhering to submergible or submerged surfaces.

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