Evonik Degussa Gmbh

Evonik Operations Gmbh

Frank Erhardt

Thomas Haas

Martin Roos

Jan Christoph Pfeffer

Markus Poetter

Harald Haeger

Thomas Tacke

Oliver Thum

Hans-Georg Joerg Hennemann

Daniel Demicoli

Sabine Hafkemeyer

Marie-Dominique Przybylski-Freund

Andreas Pfennig

Anja Schubert

Steffen Schaffer

Mirja Wessel

Harald Häger

Eva Maria Wittmann

Christian Gehring

Markus Pötter

Thomas Hueller

Ralf Kelle

Jasmin Gielen

Jasmin Corthals

Katharina Berse

Marion Schiebelhut

Lukas Falke

Marie-Dominique Przybylski

Markus PÖTTER

Markus Potter

Harald Hager

Thomas Huller

The present application relates to a process for removing an organic compound having one or more positive charges from an aqueous solution, comprising the steps a) provision of the aqueous solution comprising the organic compound and of a hydrophobic organic solution which comprises a liquid cation exchanger, where the liquid cation exchanger is hydrophobic, and where the liquid cation exchanger has one or more negative charges and an overall negative charge, b) contacting the aqueous solution and the organic solution, and c) separating off the organic solution from the aqueous solution.

Liquid cation exchanger

The invention relates to a method for oxidizing an alkane, comprising contacting the alkane with a type alkB oxidoreductase and using a type alkB oxidoreductase to prepare a mixture of oxidation products of an alkane, wherein the ratio of carboxylic acid to alcohol in the oxidation products is preferably greater than 1:1.

Biological alkane oxidation

The present invention relates to a method for removing an organic compound from an aqueous solution, comprising the steps of providing the aqueous solution which contains the organic compound, and a hydrophobic organic solution, where the latter comprises a liquid hydrophobic cation exchanger, contacting the aqueous solution and the hydrophobic organic solution, and separating off the hydrophobic organic solution from the aqueous solution, wherein the liquid hydrophobic cation exchanger is a saturated alkanoic acid having at least one alkyl substituent, where the organic compound is an organic compound having at least one positive charge and a neutral or positive total charge.

Branched-chain fatty acids as liquid cation exchangers

The invention relates to a method for removing an organic compound having one or more positive charges from an aqueous solution. Said method consists of the following steps a) the aqueous solution containing the organic compound, and a hydrophobic organic solution which contains a hydrophobic liquid cation exchanger having one or more negative charges and a negative total charge, are provided, b) the aqueous solution and the organic solution are brought into contact with each other and c) the organic solution is separated from the aqueous solution.

A process for the improved separation of a hydrophobic organic solution from an aqueous culture medium is provided. The process includes preparing an aqueous culture medium of a metabolically active cell having a decreased activity; contacting of the aqueous culture medium with a hydrophobic organic solution comprising a substrate for biotransformation; conducting a biotransformation of the substrate; and separating the hydrophobic organic solution comprising a biotransformed substrate from the aqueous culture medium. The decreased activity of the metabolically active cell is in comparison to a wild-type of the active cell and the decreased activity is of at least of one enzyme that catalyzes one reaction of &#x3b2;-oxidation of fatty acids. The invention further provides a metabolically active cell that has a decreased activity, compared to its wild-type, of an enzyme that catalyzes one of the reactions of the &#x3b2;-oxidation of fatty acids, including an enzyme selected from FadA, FadB, FadD, FadL and FadE as well as variants thereof.

Process for the improved separation of a hydrophobic organic solution from an aqueous culture medium

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Bielefeld, Germany

Frank Erhardt