公开(公告)号：US12215460B2

公开(公告)日：2025-02-04

申请号：US17535268

申请日：2021-11-24

Applicant: Clean Chemistry, Inc.

Inventor： Wayne E. Buschmann

IPC: C02F1/02 ,  C02F1/50 ,  C02F1/72 ,  C02F9/00 ,  C12P3/00 ,  D21C9/10 ,  D21C9/147 ,  D21C9/16 ,  C02F1/00 ,  C02F1/76 ,  C02F103/00 ,  C02F103/02 ,  C02F103/28 ,  C02F103/32

Abstract: In some embodiments, a method may include reducing the microbial load in contaminated water of water recycle loops. These water recycling loops may include pulp and paper mills, cooling towers and water loops, evaporation ponds, feedstock processing systems and/or non-potable water systems. The methods may include providing a peracetate oxidant solution. The peracetate solution may include peracetate anions and a peracid. In some embodiments, the peracetate solution may include a pH from about pH 10 to about pH 12. In some embodiments, the peracetate solution has a molar ratio of peracetate anions to peracid ranging from about 60:1 to about 6000:1. In some embodiments, the peracetate solution has a molar ratio of peracetate to hydrogen peroxide of greater than about 16:1. The peracetate solution may provide bleaching, sanitizing and/or disinfection of contaminated water and surfaces. The peracetate oxidant solution may provide enhanced separation of microbes from contaminated water.

公开(公告)号：US20240383784A1

公开(公告)日：2024-11-21

申请号：US18722120

申请日：2022-12-20

Applicant: KEMIRA OYJ

Inventor： Marko KOLARI ,  Jaakko SIMELL

IPC: C02F1/50 ,  C02F1/76 ,  C02F103/28 ,  D21F1/66

Abstract: An antimicrobial system comprising (a) an antimicrobial compound according to Formula I (I) and (b) a stabilised chlorine compound, wherein the compounds are separate compounds or comprise a unitary composition; wherein R1, R2 and R3 independently represent a hydrogen atom; halogen atom; hydroxy group; amino group; alkylamino group, alkyl group, hydroxyalkyl group, acyl 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; and wherein the stabilised chlorine compound comprises the reaction product of a reaction between active chlorine and a nitrogenous reactant selected from ammonium, urea, carbamate and dimethylhydantoin.

公开(公告)号：US20240300839A1

公开(公告)日：2024-09-12

申请号：US18571998

申请日：2022-06-20

Applicant: KEMIRA OYJ

Inventor： Veli-Matti VUORENPALO ,  Jonni AHLGREN ,  Jaakko HILTUNEN ,  Anna-Maija PERANDER

IPC: C02F11/147 ,  C02F103/28

CPC classification number: C02F11/147 ,  C02F2103/28

Abstract: The invention relates to a treatment system and method for treating effluent and/or sludge from a manufacturing process of cellulosic pulp or a fibrous cellulosic web, such as paper or board. The effluent and/or sludge is in form of a suspension comprising solid material and/or particles suspended in an aqueous liquid phase. The treatment system comprises a water-soluble cationized polysaccharide component comprising cationized cellulose having a charge density of at least 1.5 meq/g dry, measured at pH 4, and a synthetic cationic copolymer of (meth)acrylamide and at least one cationic monomer, the copolymer having a charge density of at most 5 meq/g.

公开(公告)号：US20240164408A1

公开(公告)日：2024-05-23

申请号：US18552496

申请日：2022-03-21

Applicant: RAGN-SELLS TREATMENT AND DETOX AB

Inventor： Robert NORGREN ,  Olof BJÖRKQVIST ,  Anders JONSSON ,  Anders KIHL

IPC: A23K10/37 ,  A23K40/00 ,  A23K50/90 ,  C02F11/127 ,  C02F11/18 ,  C02F103/28

CPC classification number: A23K10/37 ,  A23K40/00 ,  A23K50/90 ,  C02F11/127 ,  C02F11/185 ,  C02F2103/28 ,  C02F2303/04

Abstract: Biosludge comprising high amounts of lignocellulose can be made suitable as feed for larvae such as black soldier fly larvae by hygienization or sterilization at temperatures up to 200 degrees. The heating process may be combined with hydrolysis.

公开(公告)号：US11804515B2

公开(公告)日：2023-10-31

申请号：US17585372

申请日：2022-01-26

Applicant: Taiwan Semiconductor Manufacturing Co., Ltd.

Inventor： Feng Wei Kuo ,  Chewn-Pu Jou ,  Huan-Neng Chen ,  Lan-Chou Cho ,  Robert Bogdan Staszewski

IPC: H01L23/522 ,  H03L7/085 ,  H01L49/02 ,  H01F27/28 ,  H03L7/099 ,  B01D1/00 ,  B01D1/12 ,  C02F1/04 ,  C02F11/12 ,  C02F11/18 ,  C02F101/30 ,  C02F103/14 ,  C02F103/16 ,  C02F103/28 ,  C02F103/32 ,  C02F103/34 ,  C02F103/36

CPC classification number: H01L28/10 ,  B01D1/0017 ,  B01D1/12 ,  C02F1/048 ,  C02F11/12 ,  C02F11/18 ,  H01F27/2885 ,  H01L23/5227 ,  H03L7/085 ,  H03L7/099 ,  C02F2101/301 ,  C02F2101/306 ,  C02F2103/14 ,  C02F2103/16 ,  C02F2103/28 ,  C02F2103/32 ,  C02F2103/343 ,  C02F2103/365 ,  H03L2207/50

Abstract: In an embodiment, a circuit includes: a transformer defining an inductive footprint within a first layer; a grounded shield bounded by the inductive footprint within a second layer separate from the first layer; and a circuit component bounded by the inductive footprint within a third layer separate from the second layer, wherein: the circuit component is coupled with the transformer through the second layer, and the third layer is separated from the first layer by the second layer.

公开(公告)号：US11365272B2

公开(公告)日：2022-06-21

申请号：US16753370

申请日：2018-05-09

Applicant: Jiangnan University

Inventor： Dan Zhang ,  Chuang Zheng

IPC: C08F212/14 ,  C08F218/08 ,  C08F220/34 ,  C08F220/56 ,  C08F232/04 ,  C02F1/56 ,  C02F101/22 ,  C02F103/28

Abstract: A multi-copolymer, methods for producing the same and using thereof in wastewater treatment application are provided. The method includes pre-mixing by mass 10-30 parts by mass of alkenyl succinic anhydrides, 10-30 parts of vinylbenzyltrimethylammonium chloride, and 10-30 parts of dimethylaminoethyl methacrylate with water to form a first mixture; reacting the first mixture comprising passing thereof through inert gases to provide reflux protection, and adding by mass 10-30 parts of vinyl acetate and 10-30 parts of acrylamide to form a second mixture, followed by heating the second mixture and adding an initiator therein to initiate the reaction. The present invention is simple, at low cost, safe, non-toxic, environmentally friendly, easy to operate, with a better water purification efficiency than that of conventional macromolecule flocculants, multi-functional, good product stability, strong adsorption bridging ability, less dosage requirement for the water treatment agent, and results in a sturdy sludge cake and easily separated flocs.

公开(公告)号：US11220446B2

公开(公告)日：2022-01-11

申请号：US16492202

申请日：2018-03-07

Applicant: FPInnovations ,  LAKEHEAD UNIVERSITY

Inventor： Pedram Fatehi ,  Fangong Kong ,  Shoujuan Wang ,  Jacquelyn Price ,  Michael Paleologou

IPC: C02F1/56 ,  C02F11/147 ,  C08F289/00 ,  C08H7/00 ,  C02F103/10 ,  C02F103/28 ,  C02F103/30 ,  C02F103/36

Abstract: An acidic water-based process was developed for the synthesis of anionic lignin copolymers with adjustable MW, thermal stability and solubility in water. The anionic lignin copolymer described herein comprises: a molecular weight of 5,000 to 7.4×105 g/mol; and a charge density of −1 to −7.2 meq/g. The anionic lignin copolymers described herein which have a molecular weight range of 000-50,000 g/mol can be used as dispersants of negatively charged molecules or particles in numerous process or wastewater streams (e.g. concrete admixtures, gypsum slurries, textile dye) while such copolymers in a molecular weight range of 90,000-740,000 g/mole can be used as flocculants of positively charged molecules or particles in numerous process and wastewater streams including industrial and municipal systems and sludge dewatering in the textile dye, pulp & paper, mining and oil industries.

公开(公告)号：US11111629B2

公开(公告)日：2021-09-07

申请号：US16148222

申请日：2018-10-01

Applicant: Clean Chemistry, Inc.

Inventor： Wayne E. Buschmann ,  Damon C. Waters

IPC: D21C9/16 ,  C02F1/72 ,  C02F9/00 ,  C12P3/00 ,  C02F1/76 ,  C02F103/28 ,  C02F103/32 ,  C02F1/00 ,  C02F1/02 ,  C02F1/50 ,  C02F103/00 ,  C02F103/02

Abstract: In some embodiments, a method may include treating pulp in pulp and paper mills. The methods may include providing a peracetate oxidant solution and generating a reactive oxygen species. The peracetate solution may include peracetate anions and a peracid. In some embodiments, the peracetate solution may include a pH from about pH 10 to about pH 12. In some embodiments, the peracetate solution has a molar ratio of peracetate anions to peracid ranging from about 60:1 to about 6000:1. In some embodiments, the peracetate solution has a molar ratio of peracetate to hydrogen peroxide of greater than about 16:1. The peracetate oxidant solution may provide enhanced treatment methods of bleaching, brightening, and delignifying pulp fibers involving the use of peracetate oxidant solutions.

公开(公告)号：US11104593B2

公开(公告)日：2021-08-31

申请号：US16161355

申请日：2018-10-16

Applicant: SOLENIS TECHNOLOGIES, L.P.

Inventor： John S. Chapman ,  Corinne E. Consalo

IPC: A01N25/04 ,  A01N25/30 ,  A01N59/00 ,  C02F1/50 ,  C02F103/02 ,  C02F103/28

Abstract: A method of controlling and removing biofilm on a surface in contact with an aqueous industrial system comprising the step of adding an effective amount of biofilm-disrupting agent and adding a biocide to the aqueous system being treated to reduce and remove biofilm forming microbes from a surface in contact with the aqueous system is disclosed. Also disclosed is a synergistic composition of polyethyleneimine and an oxidizing biocide.

公开(公告)号：US10662092B2

公开(公告)日：2020-05-26

申请号：US15756926

申请日：2016-08-31

Applicant: Kemira Oyj

Inventor： Jonni Ahlgren ,  Sakari Halttunen ,  Jussi Ruotsalainen ,  Maria Luhtala ,  Miia Niemelä

IPC: C02F1/52 ,  B01D21/01 ,  C02F1/56 ,  C02F103/28 ,  C02F101/30

Abstract: A method for removing humic substances comprising lignin, other lignin type compounds and their disintegration products from an aqueous alkaline waste water from a bleaching of chemical pulp, which method comprises —obtaining an aqueous alkaline waste water comprising humic substances such as dissolved lignin, and —adding a high cationic starch having a charge density value of at least 1.8 meq/g dry matter of starch derivates determined at pH 7-7.5 to the alkaline waste water to precipitate humic substances.