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公开(公告)号：US11970683B2
公开(公告)日：2024-04-30
申请号：US16809384
申请日：2020-03-04
Inventor： Bruce Rittmann , Everett Eustance , Yen-Jung Lai , Justin Flory , Diana Calvo Martinez , Tarun Shesh
Abstract: Disclosed herein are methods and systems for membrane carbonation for cultivating microalgae and other microorganisms that utilize a gaseous substrate, as well as to upgrade the quality of mixed-gas streams.
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公开(公告)号：US20210179463A1
公开(公告)日：2021-06-17
申请号：US16074719
申请日：2017-02-02
Inventor： Chen Zhou , Andrew Marcus , Bruce Rittmann , Zhaocheng Wang , Aura Ontiveros-Valencia , Rosa Krajmalnik-Brown
Abstract: The present invention relates to systems and methods for removing and recovering precious metals, such as platinum-group metals (PGMs), including palladium, from wastewater and waste streams. The invention also relates to systems and methods for recycling the recovered precious metals for catalytic applications.
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公开(公告)号：US20230002263A1
公开(公告)日：2023-01-05
申请号：US17848308
申请日：2022-06-23
Inventor： Chen Zhou , Bruce Rittmann , Yihao Luo , Min Long
Abstract: The present invention relates to systems and methods for catalytic removal of per- and polyfluoroalkyl substances (PFAS) from water and wastewater. The system and methods utilize a catalyst film and a biofilm to synergystically remove PFAS from water. In some aspects, the catalyst film reduces and defluorinates PFAS into less fluorinated counterparts of PFAS, and the biofilm metabolizes the less fluroinated counterparts of PFAS into CO2 or shorter chain PFAS.
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公开(公告)号：US11459253B2
公开(公告)日：2022-10-04
申请号：US16074719
申请日：2017-02-02
Inventor： Chen Zhou , Andrew Marcus , Bruce Rittmann , Zhaocheng Wang , Aura Ontiveros-Valencia , Rosa Krajmalnik-Brown
IPC: C02F3/28 , C02F3/34 , C02F101/20 , C02F103/10
Abstract: The present invention relates to systems and methods for removing and recovering precious metals, such as platinum-group metals (PGMs), including palladium, from wastewater and waste streams. The invention also relates to systems and methods for recycling the recovered precious metals for catalytic applications.
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Patent Agency Ranking
公开(公告)号：US10435659B2
公开(公告)日：2019-10-08
申请号：US15124914
申请日：2015-03-11
Inventor： Prathap Parameswaran , Rosa Krajmalnik-Brown , Sudeep Popat , Bruce Rittmann , Cesar Torres
IPC: C12M1/12 , B01D61/18 , B01D63/04 , C02F3/10 , C02F3/20 , C02F3/34 , B01D3/10 , C02F1/02 , C02F1/66 , C02F3/12
Abstract: A membrane biofilm reactor including a vessel defining a volume is disclosed. The reactor also typically includes a first and second plurality of hollow fiber membranes. Each hollow fiber membrane generally has an outer surface and a lumen, and is located within the volume. The reactor further preferably includes a first and second gas feedstock. The first gas feedstock is provided through a first inlet in fluid communication with the lumens of the first plurality of hollow fiber membranes. The second gas feedstock is provided through a second inlet in fluid communication with the lumens of the second plurality hollow fiber membranes. Finally, the reactor also typically includes a biofilm formed on the outer surface of the hollow fiber membranes and made up of methanotrophs, Methanosarcina acetivorans, or both. The first gas feedstock is preferably different from the second gas feedstock.
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公开(公告)号：US12168622B2
公开(公告)日：2024-12-17
申请号：US18002450
申请日：2021-06-17
Applicant: Arizona Board of Regents on Behalf of Arizona State University , Florida State University Research Foundation, Inc.
Inventor： Youneng Tang , Bruce Rittmann , Chen Zhou , Yihao Luo , Rosa Krajmalnik-Brown
IPC: C02F1/70 , B01J23/44 , B01J35/00 , B01J35/23 , B01J35/30 , B01J35/39 , C02F3/10 , C02F3/34 , C02F101/34 , C02F101/36
Abstract: Disclosed herein are systems and methods for removing trichloroethane (TCA), trichloroethene (TCE), and 1,4-dioxane (1,4-D) from contaminated liquids. The system and methods rely on catalyst reduction of TCA and TCE, where the reduced products are then degraded by microorganisms The system comprises a first reactor comprising a catalyst film of precious metal nanoparticles deposited on a first nonporous membrane and a second reactor comprising a biofilm of microorganisms that are capable of degrading ethane and 1,4-D deposited on a second nonporous membrane. The first reactor further comprises a hydrogen gas source, wherein the hydrogen gas source delivers hydrogen to the gas-phase side of the first nonporous membrane, and the catalyst film is deposited on the liquid-phase side. The second reactor further comprises an oxygen gas source, wherein the oxygen gas source delivers oxygen to the gas-phase side of the second non-porous membrane, and the biofilm is deposited on the liquid-phase side.
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公开(公告)号：US11155776B2
公开(公告)日：2021-10-26
申请号：US16594944
申请日：2019-10-07
Inventor： Prathap Parameswaran , Rosa Krajmalnik-Brown , Sudeep Popat , Bruce Rittmann , Cesar Torres
IPC: C12M1/12 , C02F3/10 , C02F3/20 , C02F3/34 , B01D63/04 , B01D61/18 , B01D3/10 , C02F1/02 , C02F1/66 , C02F3/12
Abstract: The present disclosure is directed toward membrane biofilm reactors primarily comprising microorganisms that produce chemical fuel products or precursors thereof. Reactors of the present disclosure can primarily comprise acetogens, a methanotrophs, and/or Methanosarcina acetivorans.
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公开(公告)号：US20200283716A1
公开(公告)日：2020-09-10
申请号：US16809384
申请日：2020-03-04
Inventor： Bruce Rittmann , Everett Eustance , Yen-Jung Lai , Justin Flory , Diana Calvo Martinez , Tarun Shesh
Abstract: Disclosed herein are methods and systems for membrane carbonation for cultivating microalgae and other microorganisms that utilize a gaseous substrate, as well as to upgrade the quality of mixed-gas streams.
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公开(公告)号：US20200048596A1
公开(公告)日：2020-02-13
申请号：US16594944
申请日：2019-10-07
Inventor： Prathap Parameswaran , Rosa Krajmalnik-Brown , Sudeep Popat , Bruce Rittmann , Cesar Torres
IPC: C12M1/12 , C02F1/66 , C02F1/02 , B01D3/10 , B01D63/04 , C02F3/34 , C02F3/20 , C02F3/10 , B01D61/18
Abstract: The present disclosure is directed toward membrane biofilm reactors primarily comprising microorganisms that produce chemical fuel products or precursors thereof. Reactors of the present disclosure can primarily comprise acetogens, a methanotrophs, and/or Methanosarcina acetivorans.
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