Ben-Gurion University of the Negev Research and Development Authority

William Marsh Rice University

State of Israel, Israel Atomic Energy Commission

Yoram Oren

Charles Linder

Ora Kedem

Viatcheslav Freger

James Mitchell Tour

Abraham Soffer

Yilun Li

Christopher John Arnusch

Haim Cohen

Swatantra Pratap Singh

Eliyahu Korin

Franklin Sargunaraj

Disclosed herein methods for combating biofouling in a liquid, e.g. an aqueous medium by providing a surface coated with at least one laser-induced graphene (LIG) layer in said liquid medium. Particularly disclosed herein method and devices for treating water comprising passing a water stream through a membrane module equipped with at least one spacer coated with at least one layer of LIG, and optionally by applying an electric potential to the at least one LIG layer to achieve a bactericidal effect in the water stream. Specifically, disclosed herein a polymeric mesh suitable for use as a spacer in a membrane module in water treatment application, said mesh being at least partially coated with LIG.

Antibiofilm and antimicrobial functional membrane spacer

There is provided a composite membrane, which may include an electronically conductive asymmetric porous support and an electro-polymerized selective layer. There is also provided a composite membrane for water application(s), which may include an electronically conductive porous support and an electro-polymerized selective layer. Moreover, there is provided a composite membrane for gas application(s), which may include an electronically conductive asymmetric porous support and an electro-polymerized selective layer. There is also provided a membrane system which may include at least one composite membrane which may include an electronically conductive asymmetric porous support and an electro-polymerized selective layer. In addition there is provided a method for the preparation of a composite membrane.

Composite membranes and methods for their preparation

There is provided herein a membrane or film comprising one or more aromatic ionomers covalently crosslinked through aryl-aryl (&#x2014;Ar&#x2014;Ar&#x2014;), aryl-ether-aryl (&#x2014;Ar&#x2014;O&#x2014;Ar&#x2014;), aryl-sulfide-aryl (&#x2014;Ar&#x2014;S&#x2014;Ar&#x2014;), aryl-sulfone-aryl bonds, or any combination thereof, wherein said one or more aromatic ionomers further comprises at least one electron withdrawing group adapted to improve oxidant resistance of said membrane or film.

Chemically resistant membranes, coatings and films and methods for their preparation

There are provided herein selective membranes, such as composite membranes, and/or films and processes for their preparation. The membranes and/or films have a given morphology which may be stabilized, for example against swelling and chemical degradation, by covalent crosslinking and optionally, in addition, by hydrophobization. There is provided a membrane and/or film and a process for the preparation thereof, the membrane and/or film include an ionomer and/or polyelectrolyte crosslinked through aryl-aryl (&#x2014;Ar&#x2014;Ar&#x2014;), aryl-ether-aryl (&#x2014;Ar&#x2014;O&#x2014;Ar&#x2014;) and/or aryl-sulfide-aryl (&#x2014;Ar&#x2014;S&#x2014;Ar&#x2014;) bonds.

Membranes, coatings and films and methods for their preparation

Process for producing ion exchange membranes. A matrix material that comprises a polymeric component chosen from the group consisting of monomeric and oligomeric polymer precursors and cross-linkable polymers is provided. Ion cation or anion exchange particles, or proton or hydroxyl or ion conducting particles, or cation or anion exchange polymers, or proton or hydroxyl or ion conducting polymers are introduced in the matrix. The particles are mixed or the polymer is dissolved with the matrix. The resulting mixture is formed into membrane configuration. The particles or the domains of the polymer formed by polymer-matrix phase separation upon solvent evaporation or cooling, are ordered by an electric field. If the matrix comprises or consists of a polymer precursor or a cross-linkable polymer, the precursor is cured concurrently with the ordering of the particles, or if the matrix comprises a polymer solution or polymer melt the polymer solution is evaporated or the polymer melt is maintained and then cooled concurrently with the ordering of the particles.

Highly conductive ordered ion exchange membranes

An electrochemical filter which consists of a fibrous electrically conducting material to which there are bonded microscopic particles of carbon or active charcoal. A variety of fibers can be used: carbon fibers, graphite fibers, fibers of inert metal etc. A process for the production of such filters where the particles are bonded to the fibers by a pyrolyzable binder which is pyrolyzed. Electrochemical separation and filter devices based on such filter media.

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Beer-Sheva, Israel

Yoram Oren