Gas purification

One of the leading companies in gas processing and gas injection Schmack Carbotech GmbH, a company in the Viessmann Group, is one of the pioneers of biogas purification with more than 40 years of experience in the development, engineering and manufacturing of turnkey gas upgrading plants. The company’s technology is based on the pressure swing adsorption (PSA) process and incorporates the experience of more than 60 installed systems in Europe. Carbotech specialises in gas upgrading plants for injection of biomethane into the natural gas grid, as well as for fuel production. The expertise acquired from the installation of industrial systems worldwide is put to use in the ongoing further development of the PSA process for efficient, resource-conserving and environmentally friendly upgrading of biogas to biomethane.

Since 2012, Carbotech has implemented a series of systems with optimised operating costs, which use about 25 per cent less electricity while increasing the methane yield to 99 per cent. As a result, the Carbotech process stands out owing to its especially low operating costs. The company works closely with investors all the way from initial planning considerations to construction and commissioning, regardless of whether the investor decides on dry or wet fermentation.


Balkanika Energy Plc. is a company established with aim of complete realization of investment projects in the production and utilization of energy from renewable, conventional and alternative energy sources, and protection of the environment through sustainable systems for waste recovery.


88 “Bulgaria” Blvd., Floor 1,
offices 9-10, 1680 Sofia, Bulgaria
+359 (2) 4653291
+359 (2) 4197046
+359 893 388 40 - CEO
+359 893 388 408 - Technical Manager
+359 89 999 92 45 - Project manager