| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 204537000 | Using bipolar membrane | 15 |
| 20090159448 | ELECTROLYSIS DEVICE, METHOD, AND WASHER USING SUCH A DEVICE - An electrolysis device, for producing alkaline water from water, includes an electrolysis vessel, a pair of high porous electrodes arranged in the electrolysis vessel, and a cell unit arranged between the positive and negative electrodes. The pair of high porous electrodes respectively serve as a positive electrode and a negative electrode. The cell unit includes a bipolar membrane element and at least one cation exchangeable membrane. The bipolar membrane element has a cation exchangeable side and an anion exchangeable side. The cation exchangeable side is closer to the negative electrode than the anion exchangeable side. The cation exchangeable membrane is arranged between the anion exchangeable side of the bipolar membrane element and the positive electrode, so as to define an alkalic chamber between the bipolar membrane element and the cation exchangeable membrane. | 06-25-2009 |
| 20090301882 | IONTOPHORESIS DEVICE - An iontophoresis device may include an electrolyte solution holding portion and a drug solution holding portion. The electrolyte solution holding portion holds a solution of an electrolyte that dissociates into a first electrolytic ion of a first polarity type and a second electrolytic ion of a second polarity type in a solution. The drug solution holding portion holds a solution of a drug that dissociates into a drug ion of the first polarity type and a drug counter ion of the second polarity type. The iontophoresis device may also include a first ion exchange membrane with an ion exchange group of the first polarity type and a second ion exchange membrane with an ion exchange group of the second polarity type. The first and the second ion exchange members interpose the electrolyte solution holding portion and the drug solution holding portion. | 12-10-2009 |
| 20110042214 | ELECTROREGENERATION APPARATUS AND WATER TREATMENT METHOD - A water treatment apparatus that includes a cation exchange chamber containing a cation exchange resin and an anion exchange chamber containing an anion exchange resin. A bipolar interface is located between the resin chambers and defines a zone of water disassociation. A cathode communicates with the cation exchange chamber through a cation exchange membrane. An anode communicates with the anion exchange chamber through an anion exchange membrane. Dilution or flushing water flows through cathode and anode chambers and conveys captured ions to a drain or other waste connection. A baffle may be used in some configurations to divide a resin chamber into an exhausted resin region and a regenerated resin region and causes incoming water to flow through the exhausted resin region first. The exhausted resin region is located near its associated electrode, thus improving the electrical efficiency of the cell. In an alternate design, the apparatus includes a cathode/anode chamber, an anode chamber and an auxiliary electrode chamber disposed between the cathode/anode chamber and a cation exchange media chamber. An anion exchange membrane separates the cathode/anode chamber from the auxiliary electrode chamber. The anode chamber, cathode/anode chamber and auxiliary electrode chamber are energized in predetermined sequences to create both service cycles which produce softened water with reduced ionic content and cleaning cycles to de-scale the auxiliary electrode chamber and/or anion exchange membrane located between the cathode/anode chamber and the auxiliary electrode chamber. | 02-24-2011 |
| 20110100819 | PROCESS FOR THE TREATMENT OF THE AQUEOUS STREAM COMING FROM THE FISCHER-TROPSCH REACTION - The present invention relates to a process for the treatment of the aqueous stream coming from the Fischer-Tropsch reaction which comprises: —feeding of the aqueous stream containing organic by-products of the reaction to a distillation or stripping column; —collection from the column of a distillate enriched in alcohols having from 1 to 8 carbon atoms and other possible volatile compounds; feeding of the aqueous stream containing the acids leaving the bottom of the distillation column to an electrodialysis cell and the production of two outgoing streams: —an aqueous stream (i) enriched in organic acids having from 1 to 8 carbon atoms; —a purified aqueous stream (ii) with a low acid content. | 05-05-2011 |
| 20110108421 | ELECTROCHEMICAL METHODS AND PROCESSES FOR CARBON DIOXIDE RECOVERY FROM ALKALINE SOLVENTS FOR CARBON DIOXIDE CAPTURE FROM AIR - The present invention relates to methods for recovering a hydroxide based sorbent from carbonate or another salt by electrochemical means involving separation schemes that use bipolar membranes and at least one type of cationic or anionic membrane. The methods can be used in an air contactor that removes carbon dioxide from the air by binding the carbon dioxide into a solvent or sorbent. | 05-12-2011 |
| 20110203929 | RECOVERY OF LITHIUM FROM AQUEOUS SOLUTIONS - A method for recovering lithium as lithium hydroxide by feeding an aqueous stream containing lithium ions to a bipolar electrodialysis cell, wherein the cell forms a lithium hydroxide solution. An apparatus or system for practicing the method is also provided. | 08-25-2011 |
| 20110210001 | CLEANING PROCESS OF PRODUCING LACTIC ACID - Provided is a cleaning process of producing lactic acid. Firstly saccharification liquid is prepared through saccharated materials, then fermented with nutritive materials and lactic acid bacteria, and liquid alkali is used to adjust the pH. The fermentation broth is filtrated with porous membrane, and the lactic acid bacteria in the interception liquid are then reintroduced into the porous membrane for recycling. The permeate from porous membrane is subjected to nanofiltration to be decoloured and purified. The concentrated solution from nanofiltration and the cleaning liquid from fermentation tank and its affiliated equipment are filtrated and sterilized by using ceramic membrane, and then are reintroduced into the fermentation unit for recycling. The permeate from nanofiltration is then subjected to bipolar electrodialysis system to prepare lactic acid, and the liquid alkali produced at the same time is reintroduced into the fermentation tank for recycling. The lactic acid is finally concentrated by using vacuum distillation. The process recycles the bacteria in the liquid alkali and matured fermentation broth, and is characterized by low material consumption and emission, low pollution, reduced cost and cleanness and environmentally protection of the whole production process. | 09-01-2011 |
| 20120138468 | PROTON CONCENTRATION TOPOGRAPHIES, METHODS AND DEVICES FOR PRODUCING THE SAME - A device for isoelectric focusing. The device comprises a focusing container configured to contain an electrolyte solution and having a longitudinal axis and at least one electrolysis unit mounted in a close proximity to the longitudinal axis. Each electrolysis unit injects an ion flow into the focusing container so as to create a pH gradient having a plurality of steps in the electrolyte solution, along the longitudinal axis. Each step has a substantially uniform pH level and the pH gradient is defined by at least one pH ramp between every two sequential steps of the plurality of steps. | 06-07-2012 |
| 20120160686 | Process for separating and recovering 3-hydroxypropionic acid - The present invention relates to processes for separating and recovering 3-hydroxypropionic acid, comprising: (a) subjecting an aqueous solution comprising a salt of 3-hydroxypropionic acid to concentrating electrodialysis to concentrate the salt of 3-hydroxypropionic acid in the aqueous solution; and (b) subjecting the resulting concentrate to bipolar membrane electro-dialysis to convert the salt of 3-hydroxypropionic acid into the free acid of 3-hydroxypropionic acid. | 06-28-2012 |
| 20120168310 | Process for separating and recovering C4 dicarboxylic acids - The present invention relates to processes for separating and recovering the C4 dicarboxylic acid, comprising: (a) subjecting an aqueous solution comprising a salt of the C4 dicarboxylic acid to concentrating electrodialysis to concentrate the salt of the C4 dicarboxylic acid in the aqueous solution; and (b) subjecting the resulting concentrate to bipolar membrane electrodialysis to convert the salt of the C4 dicarboxylic acid into the free acid of the C4 dicarboxylic acid. | 07-05-2012 |
| 20130008792 | ELECTRODIALYTIC SEPARATION OF CO2 GAS FROM SEAWATER - A method comprises flowing process solution and electrode solution into a BPMED apparatus, applying a voltage such that the process solution is acidified and basified and dissolved CO | 01-10-2013 |
| 20150290576 | BIPOLAR ELECTRODIALYZER AND PURIFICATION METHOD FOR AMINE FLUID USING SAME - Provided is an electrodialyzer for regenerating amines, comprising a negative electrode, a positive electrode, a bipolar film, and an anion exchange film. The electrodialyzer includes a chamber having an amine purification function, a chamber having an amine recovery function, and a chamber having an acid recovery function, between the facing negative electrode and positive electrode and in order in the direction from the negative electrode towards the positive electrode. The chamber having the amine purification function is surrounded by the bipolar film arranged on the negative electrode side and the anion exchange film arranged at a position facing the bipolar film. The chamber having the amine recovery function is surrounded by a set of facing anion exchange films, and the chamber having an acid recovery function is surrounded by the anion exchange film arranged on the negative electrode side, and the positive electrode or bipolar film arranged at a position facing the anion exchange film. | 10-15-2015 |
| 20190144311 | METHOD AND DEVICE FOR THE PRODUCTION OF DRINKING WATER WITH HIGH SILICATE CONTENT | 05-16-2019 |
| 204538000 | Water splitting | 2 |
| 20110024295 | ELECTROCHEMICAL CELL - An electrochemical cell having two or more diffusion bonded layers, which demonstrates a high degree of ruggedness, reliability, efficiency and attitude insensitiveness, is provided. The novel cell structure simplifies construction and operation of these cells. Also provided is a method for passive water removal from these cells. The inventive cell, as well as stacks made using these cells, is suitable for use in applications such as commercial space power systems, long endurance aircraft, undersea power systems, remote backup power systems, and regenerative fuel cells. | 02-03-2011 |
| 20160194225 | ANTI-SCALE ELECTROCHEMICAL APPARATUS WITH WATER-SPLITTING ION EXCHANGE MEMBRANE | 07-07-2016 |
