Biogas Desulfurization

Sept. 3, 2021

Highly Efficient H2S Removal from biogas at high uptime enables industries to meet stringent gas quality requirements.

The THIOPAQ® scrubber was developed by Paques, in cooperation with universities, research institutes and customers. It can be applied to a wide range of biogas streams containing H2S and can be combined with all biological anaerobic systems. The ‘caustic’ solution in the THIOPAQ® scrubber is continuously regenerated in a bioreactor, saving up to 90% on caustic consumption. The H2S removed from the biogas is transformed into elemental sulfur, which can be used as high-quality fertilizer.

Through continuous development Paques is able to provide every customer with a tailor-made gas treatment solution that enables the customer to produce biogas with a very low hydrogen sulfide content, and to fuel local gas-fired microgrids, or upgrade the gas to biomethane.


  • Proven technology, >30 years operational experience
  • >290 THIOPAQ® references worldwide
  • Continuous innovation
  • Deep H₂S removal (to <25 ppm)
  • High uptime and reliable process
  • Low total cost of ownership
  • No air input into biogas
  • Production of high-quality fertilizer
  • No hazardous byproducts
  • For more information, visit Paques’ website.

    Editor's Note: Scranton Gillette Communications and the SGC Water Group are not liable for the accuracy, efficacy and validity of the claims made in this piece. The views expressed in this content do not reflect the position of the editorial teams of Water & Wastes Digest, Water Quality Products and Storm Water Solutions.



    Sept. 3, 2021