公开(公告)号：US12103871B2

公开(公告)日：2024-10-01

申请号：US16628623

申请日：2018-07-03

申请人： CHEMTREAT, INC

发明人： William Henderson ,  Vladimir Djukanovic ,  Nicholas Seymour

IPC分类号： C02F1/52 ,  C02F1/66 ,  C02F101/10 ,  C02F101/14

CPC分类号： C02F1/5209 ,  C02F1/5245 ,  C02F1/66 ,  C02F2101/103 ,  C02F2101/105 ,  C02F2101/106 ,  C02F2101/14 ,  C02F2209/06 ,  C02F2209/07

摘要： A method for treating water to remove a target analyte that includes adding to the water a rare earth metal salt and a coagulant, and then removing the target analyte from the water. The treatment composition can be added as a blend that includes die coagulant and the rare earth metal salt.

公开(公告)号：US12084366B2

公开(公告)日：2024-09-10

申请号：US17713521

申请日：2022-04-05

申请人： Marmon Industrial Water LLC

发明人： James Knoll ,  Katie Henderson ,  Joshua L. Mertz

IPC分类号： C02F1/52 ,  C02F11/122 ,  C02F101/10 ,  C02F101/12 ,  C02F101/20 ,  C02F101/22

CPC分类号： C02F11/122 ,  C02F1/5245 ,  C02F2101/103 ,  C02F2101/12 ,  C02F2101/20 ,  C02F2101/22 ,  C02F2209/06

摘要： A treatment solution and method for removing heavy metal contaminants and oxyanion contaminants from an aqueous solution by promoting the affinity of precipitating the contaminants. The method adjusts the pH and the ORP of the contaminated aqueous solution by applying FeCl2 and/or NaOH reducing agents, and using and applying a titania-based treatment solution of TiO(SO4), H2SO4, and FeSO4.

公开(公告)号：US20240294400A1

公开(公告)日：2024-09-05

申请号：US18663648

申请日：2024-05-14

申请人： Valerie Ann Gamble

发明人： Valerie Ann Gamble

IPC分类号： C02F1/28 ,  B01J20/04 ,  B01J20/06 ,  B01J20/10 ,  C02F1/68 ,  C02F11/00 ,  C02F101/10 ,  C02F101/20 ,  C02F101/22 ,  C02F101/36

CPC分类号： C02F1/281 ,  B01J20/041 ,  B01J20/06 ,  B01J20/103 ,  C02F1/68 ,  C02F11/004 ,  C02F2101/103 ,  C02F2101/20 ,  C02F2101/22 ,  C02F2101/363 ,  C02F2101/366

摘要： Basalt selectively adsorbs organic toxic materials, such as dioxins, furans, polychlorinated biphenyls (PCBs), bis(2-ethylhexyl)phthalate, arsenic, mercury, chromium, copper, nickel, zinc, cadmium, lead, and the like, from substances such as sediment, which contains water and the toxic materials.

公开(公告)号：US11975985B2

公开(公告)日：2024-05-07

申请号：US17728958

申请日：2022-04-25

申请人： Central South University

发明人： Qian Li ,  Rui Xu ,  Shengming Jin ,  Tao Jiang

IPC分类号： C01G49/00 ,  B01J20/02 ,  B01J20/06 ,  B01J20/30 ,  B09C1/08 ,  C02F1/28 ,  C02F1/52 ,  C02F1/00 ,  C02F101/10 ,  C02F101/22

CPC分类号： C01G49/0072 ,  B01J20/0222 ,  B01J20/0229 ,  B01J20/0292 ,  B01J20/06 ,  B01J20/3071 ,  B01J20/3085 ,  B09C1/08 ,  C02F1/281 ,  C02F1/5245 ,  C02F2001/007 ,  C02F2101/103 ,  C02F2101/22 ,  C02F2209/06

摘要： Disclosed are a functional material for synchronously stabilizing multiple metals and a preparation method thereof, and a method for rehabilitating soil or wastewater contaminated by heavy metals (metalloids). The preparation method includes: mixing a ferrous salt, a ferric salt, a manganous salt, water, a dispersing material, and a phosphate to obtain a first mixture, and subjecting the first mixture to a first precipitation reaction to obtain a first reaction mixture containing the phosphate; adjusting a pH value of the first reaction mixture containing the phosphate to 10-12 by adding an alkali thereto to obtain a second mixture, subjecting the second mixture to a second precipitation reaction to obtain a second reaction mixture; and subjecting the second reaction mixture to a solid-liquid separation to obtain a solid, washing the solid, and drying to obtain the functional material for synchronously stabilizing multiple metals.

公开(公告)号：US11944952B2

公开(公告)日：2024-04-02

申请号：US17709716

申请日：2022-03-31

申请人： Fuel Tech, Inc.

发明人： Mingming Fang ,  Heng Wang

IPC分类号： B01J20/20 ,  B01J20/08 ,  B01J20/10 ,  B01J20/12 ,  B01J20/14 ,  B01J20/28 ,  C02F1/28 ,  C02F101/10

CPC分类号： B01J20/20 ,  B01J20/08 ,  B01J20/103 ,  B01J20/12 ,  B01J20/14 ,  B01J20/28059 ,  C02F1/288 ,  B01J2220/42 ,  C02F1/281 ,  C02F2101/103 ,  C02F2101/106

摘要： A composition and process for reducing contaminants from water which includes use of a water-insoluble adsorbent having a surface area of at least about 10 m2/g, where the adsorbent is coated with a water-soluble metal salt.

公开(公告)号：US11795068B2

公开(公告)日：2023-10-24

申请号：US16473931

申请日：2017-12-27

申请人： JDC Corporation

发明人： Mutsuhiro Ohno ,  Yutaka Kobayashi ,  Takeo Asakura

IPC分类号： C02F1/28 ,  C02F101/10 ,  C02F101/20

CPC分类号： C02F1/288 ,  C02F1/281 ,  C02F2101/103 ,  C02F2101/203 ,  C02F2101/206

摘要： A water purification apparatus and a water purification method capable of effectively using a layered double hydroxide and easily being applied are described. A water purification apparatus for removing a polluted substance from polluted water includes a solid-liquid separator that separates the polluted water and a solid material from each other, and a polluted substance remover that removes, by a layered double hydroxide, the polluted substance contained in the polluted water separated by the solid-liquid separator.

公开(公告)号：US11726015B2

公开(公告)日：2023-08-15

申请号：US17392326

申请日：2021-08-03

申请人： MASSACHUSETTS INSTITUTE OF TECHNOLOGY

发明人： Emily Hanhauser ,  Michael Bono ,  Anastasios John Hart ,  Rohit Karnik ,  Xiaoyuan Ren ,  Chintan Vaishnav

IPC分类号： G01N1/40 ,  G01N1/10 ,  B01L3/00 ,  G01N1/12 ,  G01N1/20 ,  B01D15/18 ,  B01J20/28 ,  B01J20/26 ,  B01J20/34 ,  C02F1/28 ,  C02F1/42 ,  C12Q1/6806 ,  G01N1/00 ,  C02F101/10 ,  C02F101/20

CPC分类号： G01N1/405 ,  B01D15/1892 ,  B01J20/264 ,  B01J20/2805 ,  B01J20/3425 ,  B01L3/5023 ,  C02F1/281 ,  C02F1/285 ,  C02F1/42 ,  C12Q1/6806 ,  G01N1/10 ,  G01N1/12 ,  G01N1/20 ,  G01N1/4055 ,  B01J2220/00 ,  B01L2200/028 ,  B01L2200/0631 ,  B01L2200/185 ,  B01L2300/069 ,  B01L2300/0627 ,  B01L2300/12 ,  C02F2101/103 ,  C02F2101/20 ,  C02F2303/16 ,  G01N2001/005 ,  G01N2001/4061

摘要： A device for collecting contaminants from water samples is provided. The device includes a solid sorbent that collects and stores the contaminants from water samples. The solid sorbent is configured to allow for the preservation of the stored contaminants. The concentrations of the contaminants in the water samples are determined via analysis of the solid sorbent or via elution of the stored contaminants from the sorbent and analysis of the eluate solution.

公开(公告)号：US20230242423A1

公开(公告)日：2023-08-03

申请号：US18177182

申请日：2023-03-02

申请人： Dexerials Corporation

发明人： Takanori FUJITA ,  Ryu Shimada ,  Masahiko Ito ,  Masato Hasegawa

IPC分类号： C02F1/52 ,  C02F1/56 ,  C02F1/28 ,  B01D21/01 ,  B01J20/22

CPC分类号： C02F1/5263 ,  B01D21/01 ,  B01J20/22 ,  C02F1/56 ,  C02F1/286 ,  C02F1/5272 ,  C02F2101/103

摘要： Provided are an extract, which is a fractionated component 1 of a water extract of a plant powder, wherein the fractionated component 1 is a fractionated component having a fractionation molecular weight of 12,000 or greater, wherein an ethanol-undissolved component of the fractionated component 1 exhibits a peak attributable to carboxylic acid in a Fourier transform infrared spectroscopy (FT-IR) measurement and exhibits a peak attributable to cellulose in a gas chromatography mass spectrometry (GC-MS) measurement, and wherein an ethanol-dissolved component of the fractionated component 1 exhibits a peak attributable to carboxylic acid in the FT-IR measurement and exhibits a peak attributable to a plant protein in the GC-MS measurement, and a water-purifying agent containing the extract.

公开(公告)号：US11673821B2

公开(公告)日：2023-06-13

申请号：US17387862

申请日：2021-07-28

申请人： Nanjing University

发明人： Song Wu ,  Dunfeng Si ,  Dongmei Zhou

IPC分类号： C02F3/28 ,  B01J20/20 ,  B01J20/28 ,  B01J20/30 ,  B09C1/08 ,  B09C1/10 ,  C02F1/28 ,  C10B53/02 ,  C12N1/20 ,  C02F3/00 ,  C02F101/10 ,  C02F103/06

CPC分类号： C02F3/2813 ,  B01J20/20 ,  B01J20/28061 ,  B01J20/28064 ,  B01J20/28066 ,  B01J20/3078 ,  B09C1/08 ,  B09C1/10 ,  C02F1/283 ,  C10B53/02 ,  C12N1/20 ,  B01J2220/4825 ,  C02F2003/003 ,  C02F2101/103 ,  C02F2103/06

摘要： The present disclosure provides a method of preparing a carbonaceous material capable of fixing arsenic and an application thereof. Through biomass pretreatment, biomass pyrolysis and arsenite fixation, a biochar activated by potassium carbonate and an arsenic-containing wastewater containing sulfur-containing substances are mixed and deoxidized, and an anaerobic culture is carried out, to fix arsenic by the biochar activated by potassium carbonate. The present disclosure solves the problems that arsenic is released from the soil and groundwater under anaerobic conditions, the ability of conventional passivating agents to fix arsenic under anaerobic conditions is weakened, and the conventional carbonaceous materials not only cannot fix arsenic, but also accelerate the release of anaerobic arsenic.

公开(公告)号：US20180273410A1

公开(公告)日：2018-09-27

申请号：US15468632

申请日：2017-03-24

申请人： Gopher Resource, LLC

发明人： Joseph Grogan ,  Benjamin Rodrigue ,  James Dahlstrom ,  Mike Fallon

IPC分类号： C02F9/00

CPC分类号： C02F9/00 ,  C02F1/488 ,  C02F1/52 ,  C02F1/66 ,  C02F1/705 ,  C02F2001/007 ,  C02F2101/10 ,  C02F2101/103 ,  C02F2101/106 ,  C02F2101/20 ,  C02F2101/203 ,  C02F2101/206 ,  C02F2101/22 ,  C02F2103/10

摘要： A method for removing selenium from an aqueous stream comprises adjusting the pH of the aqueous stream to an acidic pH and mixing a galvanic reductant into the aqueous stream to form a first process stream, the aqueous stream having a first selenium level; separating at least a majority of the galvanic reductant from the first process stream after a retention time to form a recovered galvanic reductant stream and a second process stream; adjusting pH of the second process stream to pH 9 or higher to form a third process stream comprising precipitated particles; separating the precipitated particles from the third process stream to form a sludge stream and a treated aqueous stream having a second selenium level, the second selenium level being less than 10% of the first selenium level.