Company Profile

Germany's leading supplier of activated carbons

CarboTech is one of the leading supplier of powdered, granulated and extruded activated carbons in the world. Located in the Ruhr conurbation, our integrated production plants manufacture, refine and package tailor-made activated carbons, activated coke and carbon molecular sieves made from hard coal, coconut coke and charcoal.

Tradition and experience

CarboTech is a product of German mining research and the local coal industry. We see ourselves in the tradition of all those who draw knowledge from science and technology to apply it in ways that are economically viable for the benefit of people and their environment – every day, and in multiple geographies across the world.

CarboTech combines experience in production, application and process engineering. Strategically, we are geared to both conventional requirements and innovative services. Our customers appreciate the committed efforts of experts who are also well versed in the practical side of things.

Quality and economy

As the successor to CarboTech Aktivkohlen GmbH, CarboTech today presents itself as a modern, medium-sized company. With our unswerving focus on the customer, we’re constantly engaged in improving what we do. High demands of product quality and service quality are something we absolutely expect.

Using CarboTech’s specialist activated carbons opens the door to solutions that are reliable and economical – and remain so. Living up to these claims, especially when up against complex and demanding tasks, is what our experienced specialists do every day.




After world war 2, the Bergwerksverband GmbH (mining association) began setting up experimental facilities for the production of purest carbon and activated carbon. Thanks to many years of experimenting, it proved possible to produce very high quality activated carbon from hard coal. In 1955, a large-scale pilot plant was erected on the site of the former Queen Elisabeth coalmine in Essen and on February 29th, 1956, it was put into operation. This was the beginning of the company history of CarboTech AC GmbH.


Foundation of the hard coal mining society
Development of activated carbons

The development of activated carbons from hard coal began in the post-war years
Commissioning of a large-scale pilot plant

For the production of purest carbon and activated carbon on the site of the former Queen Elisabeth coalmine in Essen
Foundation of Bergbau-Forschung GmbH

As the research institute of the hard coal mining society for the development of new technologies for extracting, refining and utilisation of carbon. Until 1988 the activated carbon manufacturer Bergwerks-verband was a 100 % subsidiary of the Bergbau-Forschung
Development of carbon molecular sieves

During the years thereafter, the development of carbon molecular sieves (CMS-N2 and CMS-H2) enabled the production of up to 99.999 % pure nitrogen and hydrogen by Bergbau-Forschung GmbH
Patents for Pressure Swing Adsorption Systems (PSA)

During the years between 1972 and 1980 Bergbau-Forschung received various patents for PSA plants for nitrogen production and hydrogen purification
Beginning of activated carbon reactivation

According to the fluidised bed method developed by Bergbau-Forschung

Development of the dry DeSOx/DeNOx-procedure with activated carbon
Foundation of CarboTech Aktivkohlen GmbH

Production, further processing and sales of activated coke and activated carbon and thiocyanates
Spin-off of CarboTech Anlagenbau GmbH

Later renamed CarboTech Engineering GmbH (now owned by Viessman Group)
Expansion of the product range to include powdered activated carbons and impregnated activated carbons

Mobile Adsorber Rental Systems (MAMS) Beginning of the service business with Mobile Adsorber Rental Systems (MAMS)
Expansion of the product range

To include base materials that do not originate from coal (DGK types)
Switch to RÜTGERS Chemicals AG

CarboTech Aktivkohlen GmbH switches to RÜTGERS Chemicals AG
Merger of CarboTech Aktivkohlen GmbH with RÜTGERS Umwelt-Service GmbH

Renamed RÜTGERS CarboTech GmbH
Carbon Catalyst

Development of the Carbon Catalyst for NOx removal
International Chemical Investors Group

RÜTGERS CarboTech GmbH taken over by International Chemical Investors Group
Company name changed to CarboTech AC GmbH