Alexandros Stefanakis
Assistant Professor, Water and Wastewater process engineering

Environmental Engineering and Management Laboratory
Division III: Environmental Process Design and Analysis

Extended CV (pdf)



  • 2011: Doctor of Philosophy, Department of Environmental Engineering, Faculty of Engineering, Democritus University of Thrace.
  • 2007: Master in Science, Department of Civil Engineering, Faculty of Engineering, Democritus University of Thrace.
  • 2005: Diploma of Environmental Engineer, Department of Environmental Engineering, Faculty of Engineering, Democritus University of Thrace.


Research Interests

The research interests are summarized as follows:

  • Water and wastewater treatment processes
  • Natural Wastewater Treatment Systems with focus on Constructed Wetlands for municipal and industrial wastewater
  • Sludge dewatering and drying
  • Recycling and reuse of treated effluents
  • Nature-Based Solutions and green infrastructure for water management in the urban and rural context
  • Circular Economy and Sustainability

Participation in Research Programs and Projects

  • Fellowships of Excellence for Postgraduate Studies in Greece – Siemens Programme, «Development of an innovative Constructed Wetland for the treatment of agro-industrial wastewater», Funding State Scholarship Foundation – IKY 2014 – 2016
  • Research Investment Scheme – SETRIF, «Wastewater treatment as a barrier to excreta-borne disease: removal of pathogens and novel indicator organisms in trickling filters and aerated reed beds», Χρηματοδότηση School of Environment and Technology, University of Brighton, Brighton, UK, 2015.
  • «Wetland Systems for wastewater treatment: Performance evaluation of constructed wetlands treating water contaminated with phenol and m-cresol», Research project funded by British Petroleum.  Department of Environmental Microbiology, Helmholtz Centre for Environmental Research – UFZ, Leipzig, Germany, 2012 – 2014.
  • Portuguese Foundation for Science and Technology and the European Regional Development Fund, «Integrated treatment of cork processing wastewaters for potential reuse», Department of Civil Engineering and Architecture, Department of Chemistry, University of Beira Interior, Covilha, Portugal, 2012 – 2014
  • GSRT – Third Community Support Framework 2000-2006, O.P. Eastern Macedonia – Thrace, «Integrated Management of Wastewater Sludge from Wastewater Treatment Plants and Wastewater Treatment with Natural Systems». Department of Environmental Engineering, Democritus University of Thrace, Xanthi, Greece, 2007-2008

Distinctions and Awards

  • Editor-in-Chief, Circular Economy and Sustainability Journal, Springer.
  • Editorial Board, Environmental Science and Pollution Research Journal, Springer.
  • Regional Coordinator for Africa & Middle East, Specialist Group “Wetland Systems for Water Pollution Control”, International Water Association
  • Young Water Professionals Competition (2016). Award for Best presentation.  15th IWA International Conference on Wetland Systems for Water Pollution Control, Gdansk, Poland, September 4-9.
  • OIKOPOLIS AWARDS, Young Scientist’s Research (2012). Oikopolis Institution, Awards for Environmental Sensitivity. Established by the Voluntary Organization for the Urban Environment ECOCITY. House of Literature and Arts, Onassis Foundation, June 5, 2012.

Recent Publications

  • Gomes, A.C., Silva, L., Albuquerque, A., Simões, R., Stefanakis, A.I., 2020. Treatment of cork boiling wastewater using a horizontal subsurface flow constructed wetland combined with ozonation. Chemosphere, 260, 127598.
  • Stefanakis, A.I., 2020. Constructed Wetlands for Sustainable Wastewater Treatment in Hot and Arid Climates: Opportunities, Challenges and Case Studies in the Middle East. Water 12(6), 1665.
  • Stefanakis, A.I., 2019. The Role of Constructed Wetlands as Green Infrastructure for Sustainable Urban Water Management. Sustainability 11(24), 6981,
  • Stefanakis, A.I., Bardiau, M., Silva, D., Taylor, H., 2019. Presence of bacteria and bacteriophages in full-scale trickling filters and an aerated constructed wetland. Science of the Total Environment 659, 1135–1145.
  • Stefanakis, A.I. (editor), 2018. Constructed Wetlands for industrial wastewater treatment, first ed. John Wiley & Sons Ltd, Chichester, UK.
  • Tatoulis, T., Akratos, C.S., Tekerlekopoulou, A.G., Vayenas, D.V., Stefanakis, A.I., 2017. A novel horizontal subsurface flow Constructed Wetland: reducing area requirements and clogging risk. Chemosphere 186, 257-268.
  • Stefanakis, A.I., Seeger, E., Dorer, C., Sinke, A., Thullner, M., 2016. Performance of pilot-scale horizontal subsurface flow constructed wetlands treating groundwater contaminated with phenols and petroleum derivatives. Ecological Engineering 95. 514-526.
  • Stefanakis, A.I., Akratos, C.S., Tsihrintzis, V.A., 2014. Vertical Flow Constructed Wetlands: eco-engineering systems for wastewater and sludge treatment, first ed. Elsevier Publishing, Amsterdam.
  • Stefanakis, A.I. and Tsihrintzis, V.A., 2012. Effects of loading, resting period, temperature, porous media, vegetation and aeration on performance of pilot-scale Vertical Flow Constructed Wetlands. Chemical Engineering 181-182, 416-430.
  • Stefanakis, A.I. and Tsihrintzis, V.A., 2012. Effect of various design and operation parameters on performance of pilot-scale Sludge Drying Reed Beds. Ecological Engineering 38, 65-78.

Postgraduate Courses