Yissum Research Development Company of the Hebrew University of Jerusalem Ltd.

Airovation Technologies Ltd.

Uri Stoin

Yoel Sasson

Marat Maayan

Zach Barnea

Doron Weinfeld

Evgeny Gamerman

Avraham Zakay

A method for improving indoor air quality in a room, comprising drawing air from the room and guiding the air into a gas/liquid contactor charged with aqueous alkali hydroxide/HOsolution, passing the air through a perforated membrane installed in the gas/liquid contactor below the surface level of the aqueous alkali hydroxide/HOsolution, such that bubbles produced travel through said solution, and getting treated air with improved quality from said gas/liquid contactor, said treated air is characterized by having: reduced carbon dioxide levels; and/or reduced VOC levels; and/or reduced microbiological load. An air purifier to carry out the method is also provided.

Method and apparatus for purifying air from biological agents and volatile organic compounds

An air treatment unit may include an air inlet to receive a flow of input air for treatment and a reaction reservoir configured to hold an aqueous air treatment solution. The air treatment unit may also include an air dispersing element flow connected with the air inlet, wherein the air dispersing element is configured to convert at least a portion of the flow of input air into a plurality of microbubbles for introduction into the aqueous air treatment solution, such that an amount of one or more target gas species contained within the plurality of microbubbles is reduced through reaction with the aqueous air treatment solution. The unit may include an air outlet configured to output treated air from the reaction reservoir.

Air treatment systems and methods

Processes of treating plastic waste that include converting one or more plastic polymers into a liquid form either by dissolving in an organic solvent or by melting, and degrading the polymer(s) with the aid of alkali hydroxide and hydrogen peroxide are described. The processes can be performed in the presence of a phase transfer catalyst.

Process for treating plastic waste

The invention provides a process for treating a soil contaminated with a pollutant selected from the group consisting of petroleum products and aromatic hydrocarbons, comprising bringing into contact with said soil an aqueous solution in which hydrogen peroxide and hydroxide source are combined.

Remediation of contaminated soils

Process for treating a medium by the removal or destruction of one or more undesired substances present in said medium, comprising combining hydrogen peroxide and alkali hydroxide in an aqueous solution to form superoxide, and bringing the resultant superoxide-containing solution into contact with said medium. The process is useful for the destruction of halogenated organic pollutants and also for carbon dioxide removal from flue gases. The process can also be applied for soil remediation.

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Jerusalem, Israel

Uri Stoin