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Technische Universität München

Neuer Zeitschriftenbeitrag von Zimmermann et al., 2026

Did you ever wonder how we can further improve adsorption of trace organic chemicals onto powdered activated carbon (PAC) in advanced wastewater treatment?

Applying the counter-current principle, i.e. recirculating half-loaded PAC into the activated sludge process, will boost your process performance!

  • For the first time, we were able to quantify and also localize the "bonus adsorption" in a real pilot plant.
  • For scientists: Understanding the interplay of PAC particle size, PAC loading and contact time is key.
  • For practitioners: Now we can translate your "downstream" pilot trial results to integrated process performance - by adding the "bonus adsorption" when PAC recirculation would be implemented.

Curious?
Check out our open-access publication:

https://www.nature.com/articles/s41545-026-00561-y

Big thanks to Max Zimmermann, all involved project partners and BMFTR for funding this study.

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