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    Method for controlling growth of microorganisms and/or biofilms in an industrial process
    21.
    发明申请
    Method for controlling growth of microorganisms and/or biofilms in an industrial process 有权

    公开(公告)号：US20220056641A2

    公开(公告)日：2022-02-24

    申请号：US16640069

    申请日：2018-08-28

    Applicant: Kemira Oyj

    Inventor： Jaakko Simell ,  Marko Kolari ,  Jonas Konn

    IPC: D21H21/04 ,  D21H21/36 ,  D21H17/09 ,  D21H17/14

    Abstract: Disclosed is a method for controlling a biofilm, removing a formed biofilm and/or controlling a growth of microorganisms, preferably bacteria, in an aqueous environment of an industrial manufacturing process including a cellulosic fibre material. A compound according to Formula I is administered to the aqueous environment, in which Formula I R1, R2 and R3 independently represent a hydrogen atom; halogen atom; hydroxy group; amino group; alkylamino group, alkyl group, hydroxyalkyl group, haloalkyl group or alkoxy group having 1 to 4 carbon atoms; or an acylamido group having 1 to 10 carbon atoms; and A represents 2-thiazolamine;
    2-propenenitrile; 2-propenoic acid; alkyl ester or hydroxyalkyl ester of 2-propenoic acid having 1 to 4 carbon atoms; or —CHCHCONR5R6 group, where R5 and R6 represent independently hydrogen atom, alkyl or hydroxyalkyl having 1 to 4 carbon atoms, with the proviso that the compound according to Formula I is not 3-[(4-methylphenyl)sulphonyl]-2-propenenitrile or 4-amino-N-2-thiazolyl-benzene-sulphonamide.

    Method for quantitative monitoring of endospores in aqueous environment of a paper or board mill
    23.
    发明申请
    Method for quantitative monitoring of endospores in aqueous environment of a paper or board mill 审中-公开

    公开(公告)号：US20180037936A1

    公开(公告)日：2018-02-08

    申请号：US15553999

    申请日：2016-02-26

    Applicant: Kemira Oyj

    Inventor： Kalle Riihinen ,  Marko Lauraeus ,  Marko Kolari ,  Juhana Ahola

    IPC: C12Q1/68 ,  C12Q1/24

    CPC classification number: C12Q1/689 ,  C12Q1/24

    Abstract: The invention relates to a method for quantitative monitoring of bacterial endospores in an aqueous environment of a paper or board mill. The method comprises at least the following steps: obtaining at least a first aqueous sample originating from the industrial aqueous environment; destroying bacteria in vegetative form in the first sample by a suitable treatment, preferably by heating the first sample to a desired temperature; adding intercalating agent (such as PMA) to the treated first sample and allowing it to interact (e.g. by cross-linking) with the destroyed bacteria, so that the nucleic acid from the destroyed bacteria are unavailable for PCR; and determining the endospore level in the first sample by using quantitative polymerase chain reaction (qPCR) in which only the DNA from the endospores is available for amplification.

    METHOD FOR PREVENTING MICROBIAL GROWTH ON FILTRATION MEMBRANE
    25.
    发明申请
    METHOD FOR PREVENTING MICROBIAL GROWTH ON FILTRATION MEMBRANE 审中-公开
    用于防止过滤膜上微生物生长的方法

    公开(公告)号：US20140367334A1

    公开(公告)日：2014-12-18

    申请号：US14369727

    申请日：2012-12-19

    Applicant: KEMIRA OYJ

    Inventor： Jussi Salonen ,  Marko Kolari ,  Mehrdad Hesampour ,  Kaj Jansson

    IPC: B01D65/08

    CPC classification number: B01D65/08 ,  B01D61/025 ,  B01D61/04 ,  B01D2321/162 ,  C02F1/441 ,  C02F2303/16 ,  Y02A20/131

    Abstract: The present invention relates to a method for preventing microbial growth on a filtration membrane during desalination process. The method comprises that the membrane is exposed to a low concentration of performic acid by continuously or intermittently introducing performic acid to the membrane surface. When performic acid is added according to the present invention to the water flow, there is no significant reduction in the water flux through the membrane.

    Abstract translation: 本发明涉及一种在脱盐过程中防止过滤膜上的微生物生长的方法。 该方法包括通过连续地或间歇地将表层酸引入膜表面，将膜暴露于低浓度的表皮酸。 当根据本发明将丙酸加入到水流中时，通过膜的水通量没有显着降低。

    Method for estimating the vapor phase corrosion load
    26.
    发明授权
    Method for estimating the vapor phase corrosion load 有权

    公开(公告)号：US12072279B2

    公开(公告)日：2024-08-27

    申请号：US17297309

    申请日：2019-11-27

    Applicant: Kemira Oyj

    Inventor： Marko Kolari ,  Iiris Joensuu

    IPC: G01N17/04 ,  G01N33/34

    CPC classification number: G01N17/04 ,  G01N33/343

    Abstract: A method to determine vapor phase corrosion load in paper and board manufacturing system is disclosed. The method allows optimizing oxidative biocide content in aqueous solutions, suspensions and slurries in the paper and board manufacturing system. The method is based on determination of redox values (rH) of the system during determined time period. A correlation between rH values exceeding a predetermined rH threshold values and corrosion load provides an estimate of increased or decreased corrosion load and allows timely changes to biocide dosage.

    Method for manufacturing a fibrous web
    27.
    发明授权
    Method for manufacturing a fibrous web 有权

    公开(公告)号：US11598051B2

    公开(公告)日：2023-03-07

    申请号：US16619109

    申请日：2018-06-19

    Applicant: Kemira Oyj

    Inventor： Jaakko Ekman ,  Marko Kolari ,  Juhana Ahola

    IPC: D21H21/04 ,  D21D5/28 ,  D21H21/36 ,  D21H23/78 ,  D21C5/00 ,  D21C9/08 ,  G01N33/18 ,  G01N33/34

    Abstract: A method includes forming an aqueous fibre suspension including cellulosic fibres from one or more raw material flows, and applying at least one chemical and/or physical control measure to the aqueous fibre suspension or at least one of its raw material flows for control of microbial activity in the aqueous fibre suspension or the raw material flow before an inlet of an intermediate residence entity. In this manner a starting ORP value for the aqueous fibre suspension is obtained. The aqueous fibre suspension is in the intermediate residence entity at least a minimum delay time. A final ORP value is measured for the aqueous fibre suspension after an outlet of the intermediate residence entity before the formation of the fibrous web. An ORP difference value between the starting ORP and final ORP values is calculated. Finally, the aqueous fibre suspension is formed into a fibrous web and dried.

    Method for manufacturing a fibrous web
    28.
    发明授权
    Method for manufacturing a fibrous web 有权

    公开(公告)号：US11530514B2

    公开(公告)日：2022-12-20

    申请号：US16758058

    申请日：2018-11-08

    Applicant: Kemira Oyj

    Inventor： Juhana Ahola ,  Marko Kolari

    IPC: D21H17/11 ,  D21C5/00 ,  A01N47/44 ,  A01N59/00 ,  C02F1/50 ,  D21H17/66 ,  D21H21/24 ,  D21H21/36 ,  C02F103/28

    Abstract: A method for manufacturing a fibrous web, such as web of paper, board, tissue or the like is disclosed. The method includes obtaining at least one fibre suspension of lignocellulosic and/or cellulosic fibres and feeding the fibre suspension into an intermediate residence entity. The fibre suspension including bacterial endospores, is discharged out of the intermediate residence entity via an outlet after a residence time of at least 2 hours in the intermediate residence entity and after a time delay the fibre suspension is formed into a fibrous web. Bacterial endospores are sensitized by adding a germinant surfactant including a primary or secondary ammonium head group and a linear unsubstituted C12-alkyl tail, to the fibre suspension at an addition point located at a lower part of the intermediate residence entity or after the outlet of the intermediate residence entity, but before the formation of the fibrous web.

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