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    SOLAR PANEL RECYCLING
    1.
    发明申请
    SOLAR PANEL RECYCLING 有权

    公开(公告)号：US20250050394A1

    公开(公告)日：2025-02-13

    申请号：US18800633

    申请日：2024-08-12

    Applicant: Worcester Polytechnic Institute

    Inventor： Yan Wang ,  Xiaotu MA ,  Owen Wang

    IPC: B09B3/80 ,  B09B3/38 ,  B09B3/70 ,  B09B101/15 ,  C01B33/18

    Abstract: A recycling process for exhausted, end-of-life solar panels achieves substantial recovery of silicon and silver, as well as other materials, from a recycling stream of discarded solar panels. Agitation and shredding of the solar panels yield a granular mass, which can be separated by particle size to yield the silicon rich solar cell material. Leaching with a strong base such as sodium hydroxide draws the silicon into the leach solution. Filtration of the leach solution draws off the silicon-rich solution and allows filtration of other valuable materials such as silver. Addition of an acid such as hydrochloric acid to the leach solution then precipitates the silicon into a nano silica powder of in the form of high purity silicon dioxide. The high purity silicon dioxide provides raw materials for recycled solar panels, lithium-ion batteries and other uses depending on the purity.

    Atomizing spray dryer
    2.
    发明授权
    Atomizing spray dryer 有权

    公开(公告)号：US12209806B2

    公开(公告)日：2025-01-28

    申请号：US18103794

    申请日：2023-01-31

    Applicant: Worcester Polytechnic Institute

    Inventor： Jamal S. Yagoobi ,  Mengqiao Yang ,  Mehrnoush F. Dardashti

    IPC: B01D1/18 ,  B05B17/00 ,  B05B17/06 ,  F26B3/12 ,  F26B25/00

    Abstract: An atomizing spray dryer employs one or more stages defined by ultrasonic transducers in close proximity to a liquid feed opening forming a path of an atomization flow for producing uniform droplets from a close tolerance with the transducer. The atomization flow exits a gap between the transducer and an outer edge of the opening, such that the passed liquid is responsive to an oscillation of the transducer for forming the droplets. A conical or other suitably shaped transducer engages a substantially round liquid feed opening. Subsequent stages may include a circular, ring, or other suitable shape aligned to receive the atomization flow from a circumference of the conical base, or may also take any suitable shape, preferably to receive droplets directed by the first stage.

    FOURIER DOT PRODUCT ANALOG MATRIX MULTIPLIER DEVICE
    3.
    发明申请
    FOURIER DOT PRODUCT ANALOG MATRIX MULTIPLIER DEVICE 有权

    公开(公告)号：US20250028784A1

    公开(公告)日：2025-01-23

    申请号：US18777818

    申请日：2024-07-19

    Applicant: Worcester Polytechnic Institute

    Inventor： Jack Adiletta ,  Ukluhan Guler

    IPC: G06F17/16

    Abstract: Embodiments of the present innovation relate to a Fourier dot product analog matrix multiplier device. In one arrangement, the analog matrix multiplier device is configured as a set of analog transistor circuits and can include a set of signal generators and a Fourier dot product circuit. The components of the analog matrix multiplier device are configured to perform a Fourier dot product multiplication process relative to coefficients received by the analog matrix multiplier device. The Fourier dot product analog matrix multiplier device leverages the low power capabilities of analog circuits and a mathematical algorithm to reduce the number of components and power required to perform matrix multiplication.

    LIMESTONE PRODUCTION
    4.
    发明申请
    LIMESTONE PRODUCTION 有权

    公开(公告)号：US20240409427A1

    公开(公告)日：2024-12-12

    申请号：US18736950

    申请日：2024-06-07

    Applicant: Worcester Polytechnic Institute

    Inventor： Andrew R. Teixeira ,  Michael T. Timko ,  David Kenney

    IPC: C01F11/18

    Abstract: A recycling and waste management process receives municipal solid waste (MSW) with substantial organic content to form a self-sustaining Hydrothermal Mineralization (HTM) process based on Supercritical Water Oxidation (SCWO) to receive supercritical steam and carbon dioxide with potential for electrical generation before forming calcium carbonate suitable for concrete production. Hydrothermal mineralization (HTM) provides a rapid elimination of organic wastes while simultaneously producing a non-emissive and thermally stable cement additive to act as a carbon sink. Hydrothermal mineralization (HTM) provides a rapid disposal pathway for organic wastes, a green source of electricity and a final product that can be coupled with traditional and alternative cement productions to reduce carbon footprints of cement production.

    ALGAL CO-CULTURE SYSTEM
    5.
    发明申请
    ALGAL CO-CULTURE SYSTEM 有权

    公开(公告)号：US20240400960A1

    公开(公告)日：2024-12-05

    申请号：US18677780

    申请日：2024-05-29

    Applicant: The Trustees of Boston College ,  Worcester Polytechnic Institute

    Inventor： Richard THYDEN ,  Glenn R. GAUDETTE ,  Tanja DOMINKO ,  Luke R. PERREAULT

    IPC: C12M1/00 ,  C12M1/12 ,  C12M1/34

    Abstract: Mammalian cell production systems are disclosed herein wherein a living mammalian cell culture including a mammalian growth medium operative is co-cultured with a living algae cell culture including an algae growth medium operative to feed nutrients and carbon dioxide to a plurality of algae cells and to transport an algae waste from the plurality of algae cells. The living algae cell culture produces an algae waste with one or more nutrients and oxygen operative to feed the mammalian cell culture, while the living mammalian cell culture produces a mammalian waste with one or more nutrients and carbon dioxide operative to feed the algae cell culture. The systems are capable of a continuous operation at normal mammalian temperature and pH, thereby removing a need to cool down the algae growth medium and/or heat up the algae growth medium for a treatment of algae or for a replenishment of algae.

    Charge material for recycled lithium-ion batteries
    8.
    发明授权
    Charge material for recycled lithium-ion batteries 有权

    公开(公告)号：US12074302B2

    公开(公告)日：2024-08-27

    申请号：US17841152

    申请日：2022-06-15

    Applicant: Worcester Polytechnic Institute

    Inventor： Yan Wang ,  Eric Gratz ,  Qina Sa ,  Zhangfeng Zheng ,  Joseph Heelan ,  Kee-Chan Kim

    IPC: H01M10/54 ,  C22B1/24 ,  C22B3/00 ,  C22B7/00 ,  C22B26/22

    CPC classification number: H01M10/54 ,  C22B1/24 ,  C22B7/007 ,  C22B23/0423 ,  C22B23/043 ,  C22B23/0438 ,  C22B26/22

    Abstract: Cathode material from exhausted lithium ion batteries are dissolved in a solution for extracting the useful elements Co (cobalt), Ni (nickel), Al (Aluminum) and Mn (manganese) to produce active cathode materials for new batteries. The solution includes compounds of desirable materials such as cobalt, nickel, aluminum and manganese dissolved as compounds from the exhausted cathode material of spent cells. Depending on a desired proportion, or ratio, of the desired materials, raw materials are added to the solution to achieve the desired ratio of the commingled compounds for the recycled cathode material for new cells. The desired materials precipitate out of solution without extensive heating or separation of the desired materials into individual compounds or elements. The resulting active cathode material has the predetermined ratio for use in new cells, and avoids high heat typically required to separate the useful elements because the desired materials remain commingled in solution.

    Acid wash of red mud (bauxite residue)
    10.
    发明授权
    Acid wash of red mud (bauxite residue) 有权

    公开(公告)号：US12049409B2

    公开(公告)日：2024-07-30

    申请号：US17547557

    申请日：2021-12-10

    Applicant: Worcester Polytechnic Institute

    Inventor： Himanshu Tanvar ,  Brajendra Mishra

    IPC: C01F7/0653 ,  C01F7/066

    CPC classification number: C01F7/0653 ,  C01F7/066

    Abstract: Bauxite residue recovery includes mixing a solution of hydrochloric acid (HCL) according to a predetermined concentration, and adding the HCL solution to a quantity of raw red mud recovered from industrial operations as waste material. The highly alkaline property of the bauxite residue, commonly known as red mud is at least partially neutralized from the HCL, and makes the resulting washed red mud more amenable to subsequent uses in various applications in fields such as construction, wastewater treatment, and metal recovery processes. The process recovers washed red mud from the red mud and HCL solution by filtering the raw red mud and HCL solution for generating a stream of leach liquor from the filtrate and the recovered washed red mud from the residue.

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