A small scale adsorption desalinator

Christopher Olkis, Stefano Brandani, Giulio Santori

Research output: Contribution to journalArticlepeer-review


Adsorption desalinators produce potable water from seawater by utilising low-grade heat 50-90 °C. Experimental systems were introduced in a number of studies and proved the feasibility of the concept. However, the proposed experimental systems have large bed sizes of up to 36 kg, which leads to an inflexibility in their operation and the change of components. Here we introduce a novel, small-scale adsorption desalinator, which is currently the world’s smallest with a bed size of 0.2 kg. The small scale will enable us to test advanced, non-commercial adsorption materials, which are not available in large quantities yet. Moreover, different component designs will be assessed to optimise the performance. The starting point of the investigation will be a series of experiments with Siogel silica gel. The results represent a benchmark case for further investigations, provide compelling insight into the process, and contribute to the advancement of temperature swing adsorption.
Original languageEnglish
Pages (from-to)1425-1430
Number of pages6
JournalEnergy Procedia
Publication statusPublished - 16 Feb 2019
EventICAE2018 International Conference on Applied Energy - The Hong Kong Polytechnic University, 11 Yuk Choi Rd, Hung Hom, Hong Kong, Hong Kong
Duration: 22 Aug 201825 Aug 2018


  • desalination
  • adsorption
  • low grade heat
  • heat recovery
  • temperature swing adsorption


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