Magnesium Elektron, Inc.

Rhodia Operations

Mila Bortun

Anatoly I Bortun

Francis J Fischer

Emmanuel Rohart

Julien Hernandez

Rui Jorge Coelho Marques

Deborah Jayne Harris

Clare Jones

Laure Bisson

Rui Miguel Jorge Coelho Marques

Deborah Jayme Harris

The invention relates to a method for treating a gas containing nitrogen oxides (NOx), in which an NOx-reduction reaction is carried out using a nitrogen-containing reducing agent, which invention is characterized in that the catalyst used for the reduction reaction is a catalytic system containing a composition comprising zirconium, cerium and niobium in the following percentages by weight, expressed in terms of the weight of oxide: 10-50% of cerium, 5-20% of niobium and the remainder consisting of zirconium.

[object Object]

The invention features a system for treating liquid including a liquid treatment device comprising adsorbent media for removing a substance from liquid and a pH adjuster device located upstream of the liquid treatment device relative to a direction of flow of the liquid. The pH adjuster device contains particulate or solid state pH adjuster material capable of releasing H or OH groups into the liquid or consuming H or OH groups from the liquid effective to raise or lower the pH of the liquid while it passes through the media. The pH adjuster may include acidifier or basifier material. Also featured is a method of using the device to remove a substance from liquid by adsorption and/or ion exchange.

Treating liquids with pH adjuster-based system

pH adjuster-based system for treating liquids

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Easton, PA, United States of America

Mila Bortun