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WBA Biogas Upgrading Technology Training Course


Tuesday, 13th June

13:00 – 16:00 BST

Online via Zoom

Trainer: Mario A. Rosato, CEO Sustainable Technologies

Overview and Learning outcome

There are various biogas purification techniques available, but the information published by manufacturers can often be contradictory or incomplete. This makes it challenging to compare offers effectively.

Our course aims to achieve two objectives. Firstly, it provides a general and impartial overview of biogas purification techniques. Secondly, it offers a simple calculation method (using an Excel sheet and some formulas) to facilitate comparisons between processes that operate under different conditions. The course content will prioritize practical aspects of the selection process while keeping theoretical content to a minimum.

We understand that selecting the right biogas purification technology can be a daunting task, but our training course can help you make an informed decision. By providing a neutral perspective and a simple calculation method, we aim to empower you to choose the best biogas purification technology for your specific needs.

  1. Differences between cleaning and purification of biogas
  2. Overview of the different technologies

Dry upgrading technologies

  • Activated carbon (PSA, pressure swing adsorption)
  • Engineered zeolites
  • Bed-packed amines
  • Selective membranes


Wet upgrading technologies

  • Water scrubbing
  • Water/PEG scrubbing (Selexol process)
  • Alkaline scrubbing (Benfield process)
  • Amine scrubbing
  • Solvent scrubbing (Rectisol process). The special case of landfill gas upgrading


Emerging technologies

  • Cryogenic upgrading
  • Bioupgrading
  • Electromethanogenesis


3. Selection of the most suitable process in each context: the thermodynamic approach

  • The thermodynamic benchmark: the ideal Van t’Hof machine in the case of perfect and imperfect gas separation
  • Minimum work and minimum heat of imperfect separation
  • The ideal work of compression
  • The ideal work of liquefaction


4. Some numeric examples and how to compare them correctly

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