Solvay Umweltchemie Gmbh

Other

Solvay (societe Anonyme)

Solvay Deutschland Gmbh

Gutec, Gesellschaft Zur Entwicklung Von Umweltschutztechnologie Mbh

Solvay Unmeltchemie Gmbh

Solvay Unweltchemie Gmbh

Michael Sell

Klaus-Dieter Vorlop

Dirk Bonse

Michael Bischoff

Helmut Derleth

Karl-Heinz Bretz

Thomas Tacke

Gunther Strauss

Andreas Mann

Klaus-Viktor Peinemann

Helmut Dillenburg

Klemens Kneifel

Wolfgang Dilla

Gerhard Neuenfeldt

Rolf-Dieter Behling

Hubert Schindler

Erich Ploenissen

Robert Owen

Juergen Bosse

Veronika Koch

Arne Becker

Process for the purification of aqueous peroxygen solutions comprising the treatment of an aqueous peroxygen solution with (a) at least one membrane purification step, (b) optionally at least one ion exchange purification step, (c) optionally at least one dilution step, and (d) at least one other purification step, all of which can be conducted in any sequence. Aqueous peroxygen solutions having a TOC level of less than 1 mg/kg can be obtained by this process. They can be used in the manufacture of semiconductors.

Process for the purification of aqueous peroxygen solutions, solutions obtainable thereby and their use

Method of removing chlorine and halogen-oxygen compounds from water by

Catalytic fluidized bed process for treating aqueous liquids

Method of introducing hydrogen into aqueous liquids without forming

Abrasion-resistant catalyst carrier formed of transition aluminas

Abrasion-resistant carrier catalyst

A process for treating waste water containing chlorinated organic substances, particularly waste water from production of epichlorohydrin which contains more than 10 mg of adsorbable organic halogen compounds (AOX) per liter, comprising charging the waste water at a pH of 10 to 14 (measured at room temperature) into a reactor and maintaining a temperature of at least 75.degree.C., a pressure of at least 1 bar (abs.), and a residence time of at least 0.5 hours in said reactor, thereby partially dechlorinating and/or dehydrochlorinating chlorinated organic compounds contained in the waste water, and thereafter subjecting the waste water to further dechlorination and/or dehydrochlorination treatment in the presence of a hydrogen-containing gas, a hydrogen-releasing compound and/or a catalytically active material; and optionally subjecting the waste water to a biological treatment with the use of microorganisms; and apparatus for carrying out the foregoing process.

Process for treating waste water containing chlorinated organic

A process for degerminating and treating aqueous liquids with gas having improved efficiency and an apparatus for simultaneously degerminating and gas treating liquids are described.

Process for gas treatment and degermination and apparatus for

A catalyst is disclosed made from a porous inorganic carrier material impregnated with a metal component selected from palladium, rhodium, mixtures of palladium and rhodium, and mixtures of palladium and a metal of the copper group, in which the carrier has a bimodal pore radius distribution with a first pore radius distribution maximum in the range of up to 400 .ANG., preferably 50 to 350 .ANG., and with a proportion of at least 20%, relative to the overall pore volume, of macropores having a radius of at least 2,000 .ANG., preferably 5,000 to 20,000 .ANG..

Catalyst for removing the nitrite and/or nitrate content in water

The invention relates to particulate material for separation of metal cations from aqueous solutions. These particles contain complexing agents dispersed in a continuous aqueous phase which is embedded in or is a constituent of a hydrophilic gel and/or is encapsulated by a water-insoluble, ion-permeable shell.

Particulate material suitable for selectively separating metal cations

A continuously performable process for the removal or reduction of the nite and/or nitrate content of nitrite-polluted and/or nitrate-polluted water with the selective formation of nitrogen by catalytic hydrogenation. Catalysts suitable for carrying out such a process are also described.

Process for removing the nitrite and/or nitrate content in water

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Peine, Germany

Michael Sell