Membranes for Biogas Upgrading


  • Biogas upgrading to biomethane (removal of CO₂ and other impurities).
  • Generation of CO2 for further liquefaction (in addition to the main product)

Biogas Treatment Process Based on Grasys Membrane Cartridges

Biogas Treatment Process Based on Grasys Membrane Cartridges
Тех. характеристики

Diameter, " 8

Feed gas pressure, MPa up to 2.5

Membrane pressure drop, MPa up to 2.0

Feed gas temperature, °С 10 to 60

The principle of membrane separation of a gas mixture is based on the different penetration rates of its components through a polymeric membrane due to the differential partial pressures of the gas on either side of the membrane.

Membrane gas separation technology is widely used throughout the world to extract nitrogen from air, extract hydrogen from hydrogen-bearing gas mixtures, and extract carbon dioxide and water from natural gas.

Grasys Membrane Cartridges

  • High selectivity
  • High specific membrane surface area
  • Wide pressure range (up to 13 MPa)
  • Low pressure loss during separation
  • Excellent chemical stability

Grasys Cartridge-Based Membrane Units

  • Low capital and operating costs
  • Easy to install and maintain
  • Compact unit dimensions
  • Removal of several impurities in a single process cycle
  • Environmentally friendly technology (no chemicals used)


Can be used as part of small and large biogas plants (with biogas flow rate of 50 to 5,000 m3/h).

Grasys Solutions

  • Production and supply of membrane cartridges
  • Replacement of membranes from other manufacturers
  • Design and manufacture of membrane units
  • Maintenance, repair, upgrading of membrane units
  • Complete turnkey projects (EPC contracts)

Biogas Upgrading Units

These units purify biogas produced from organic waste, energy crops, landfill gas or supplied from wastewater treatment plants. After the purification process, the product gas — biomethane with a purity of up to 99.95% — can be fed into the gas transport system or used as a fuel (liquefied biomethane) for vehicles.

Biogas Upgrading Units

Grasys Manufacturing Facility

Grasys Manufacturing Facility
Grasys Manufacturing Facility
Grasys Manufacturing Facility
Grasys Manufacturing Facility
Grasys Manufacturing Facility
Grasys Manufacturing Facility
Grasys Manufacturing Facility
Grasys Manufacturing Facility
Grasys Manufacturing Facility

The main specialisation of the production complex: the manufacture of high-efficiency hollow-fibre gas separation membrane cartridges.

A unique research and production complex is located in the territory of the Dubna Special Economic Zone of Technical-Innovative Type. One of the most strategically important areas is the production of membrane cartridges for hydrocarbon gas separation, including the helium concentrate separation.

Booklet. Grasys Manufacturing Facility. Download PDF; 1,33 МБ

Operating Procedure When Dealing With R&P Co. Grasys


Submit a request on the site or reach our specialist by phone


Grasys expert speaks to you and finds out your needs


You fill out a questionnaire with the desired equipment parameters


Our expert prepares a quotation with the most efficient solutions to your application. Contract to be concluded


We perform engineering, designing, manufacture equipment with its further testing and placing into service, etc


We ship equipment to the operational location and provide a package of documents


We are engaged in start-up operations and equipment commissioning


We provide aftersales service to ensure equipment efficient performance and reliability excellence (optional)

Advantages of Cooperating with R&P Co. Grasys

High-tech Russian manufacture

Implementation of import substitution programs

Hands-on experience in implementing over 1600 projects within 20 years

Manufacturing equipment of any size and level of sophistication

Turnkey projects (EPC-contracts)

Prompt technical support

Information contained herein does not constitute а public offer

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