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    Method of removing borate ions from an aqueous solution
    1.
    发明授权
    Method of removing borate ions from an aqueous solution 有权

    公开(公告)号：US10981144B2

    公开(公告)日：2021-04-20

    申请号：US16062625

    申请日：2016-12-13

    Applicant: SINGAPORE UNIVERSITY OF TECHNOLOGY AND DESIGN

    Inventor： Fuming Chen ,  Hui Ying Yang

    IPC: C02F1/28 ,  B01J20/20 ,  B01J20/32 ,  B01J20/34 ,  B01J20/30 ,  G01N27/06 ,  C02F101/10

    Abstract: In one embodiment, the invention relates to a carbon-based boron removal medium with hydroxyl groups and amine group, and in particular, to a method for forming the carbon-based boron removal medium. In a specific embodiment, nitrogen-doped (“N-doped”) graphene oxide is synthesized by a simple two-step process: (1) oxidation of graphite to graphene oxide, and (2) nitrogen-doping (“N-doping”) the graphene oxide to form the amine group. The resultant N-doped graphene oxide can efficiently remove boron from aqueous solutions. In another embodiment, a method of sensing or detecting the presence of boron in an aqueous solution by using a boron sensing medium comprises at least two hydroxyl groups and at least one pyridinic nitrogen or pyrrolic nitrogen or quaternary nitrogen (i.e. pyridoxine, in particular vitamin B6). The boron ions in the solution would form a highly ionized complex, which can cause significant increase in electrical conductivity of the solution, which can then be used to measure the concentration of boron in said solution.

    Method of removing boric acid from an aqueous solution
    4.
    发明授权
    Method of removing boric acid from an aqueous solution 有权

    公开(公告)号：US11224855B2

    公开(公告)日：2022-01-18

    申请号：US17217127

    申请日：2021-03-30

    Applicant: SINGAPORE UNIVERSITY OF TECHNOLOGY AND DESIGN

    Inventor： Fuming Chen ,  Hui Ying Yang

    IPC: C02F1/28 ,  B01J20/20 ,  B01J20/32 ,  B01J20/34 ,  B01J20/30 ,  G01N27/06 ,  C02F101/10

    Abstract: The invention generally relates to a carbon-based boron removal medium with hydroxyl group and amine group, and in particular, to a method for forming the carbon-based boron removal medium. In various embodiments, nitrogen-doped (“N-doped”) graphene oxide is synthesized by a simple two-step process: (1) oxidation of graphite to graphene oxide, and (2) nitrogen-doping (“N-doping”) the graphene oxide to form the amine group. The resultant N-doped graphene oxide can efficiently remove boron from aqueous solutions. The invention also generally relates to a boron sensing medium and its use in conductometric measurement techniques to detect and measure the amount of boron present in aqueous solutions.

    MEMBRANE FOR FILTRATING WATER
    6.
    发明申请
    MEMBRANE FOR FILTRATING WATER 有权
    膜过滤水

    公开(公告)号：US20150122735A1

    公开(公告)日：2015-05-07

    申请号：US14401799

    申请日：2013-05-20

    Applicant: Singapore University of Technology and Design ,  Massachusetts Institute of Technology

    Inventor： Hui Ying Yang ,  Rohit Karnik

    IPC: B01D71/12 ,  C02F1/44 ,  B01D71/02

    CPC classification number: B01D71/12 ,  B01D61/18 ,  B01D69/02 ,  B01D69/10 ,  B01D69/148 ,  B01D71/021 ,  B82Y30/00 ,  C02F1/441

    Abstract: The present invention relates to a material. In particular, it relates to a membrane for filtering water. More particularly, it relates to a membrane comprising carbon nanotubes and mixed cellulose ester porous membranes for water desalination and purification. Still more particular, the membrane comprising a fibrous substrate and carbon nanotubes formed on a fibrous substrate, wherein the surface of the carbon nanotubes is functionally modified. A microfluidic device comprising such a membrane and a method for filtering water are also disclosed.

    Abstract translation: 本发明涉及材料。 特别涉及用于过滤水的膜。 更具体地说，本发明涉及包含碳纳米管和用于水脱盐和净化的混合纤维素酯多孔膜的膜。 更具体地，膜包含纤维基材和形成在纤维基材上的碳纳米管，其中碳纳米管的表面在功能上被改变。 还公开了包含这种膜的微流体装置和用于过滤水的方法。

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