Petros Gikas
Professor, Environmental Engineering 

Design of Environmental Processes Laboratory
Division II: Process Development, Analysis and Design

Extended CV (pdf)



  • 1996: Ph.D.:  Imperial College of Science, Technology and Medicine, Department of Chemical Engineering, London,UK
  • 1990: Diploma in Chemical Engineering, NTUA.

Research Interests

  • Major research target: Design of energy positive wastewater treatment plants
  • Research focus: Liquid and solid waste management and water resources management:
    • Wastewater treatment processes
    • Water reclamation and reuse
    • Removal/valorization of nitrogen from wastewater using encapsulated microorganisms
    • Effect of heavy metals on the behaviour of microorganisms
    • Municipal Solid Waste and Biosolids management, with emphasis on energy production
    • Integrated water resources management

Participation in Research Programs and Projects

  • «Upgrade of wastewater treatment plants for the management of increased demands and the reduction of the operational cost», ANELIXI, funded by: European Regional Development Fund (2021-today)
  • «Consulting services for the investigation and creation of a regulatory framework for the reuse of treated wastewater under the responsibility of EYDAP S.A.», funded by: EYDAP SA (2021-today)
  • “Expertise support for the advisable design of a pilot unit for the gasification of solid waste”, funded by: United Association of Solid Waste Management for Crete (2020-today)
  • “New concept for energy self-sustainable wastewater treatment process and biosolids management”, LIFE B2E4SustWWTP (LIFE16 ENV/GR/000298), funded by: European Commission. (2017-today)
  • “Bioconversion of CO2 into High-added Value Bioproducts through Sustainable Microalgae Cultivation Processes”, CO2-BioProducts, funded by: EYDE-ETAK (Ministry of Education, Research and Religious Affairs)

Distinctions and Awards

  • Special advisor to the Hellenic Special Secretariat for Water, for issues related with the implementation of the Water Framework Directive 2000/60EC, and representative of Greece to the European Commission Working Group “Chemicals”, for the establishment of Environmental Quality Standards (EQS)
  • Advisor to the Greek-German Assembly (Deutsch-Griechische Versammlung-DGV), for water and waste management/treatment issues  
  • Associate Editor for the Journal of Environmental Management (Elsevier). Member of the Editorial Boards for the journals: Heliyon (Elsevier), BioMed Research International (Hindawi), “Water” (MDPI) και British Journal of Environment and Climate Change (Science Domain International)

Recent Publications

  • P.T. Odirile, P.M. Marumoloa, A. Manali and P. Gikas, 2021, "Anaerobic Digestion for Biogas Production from Municipal Sewage Sludge: A Comparative Study between Fine Mesh Sieved Primary Sludge and Sedimented Primary Sludge", Water, 2021, 13, 3532,
  • V. Manasaki, I. Palogos, I. Chourdakis, K. Tsafantakis and P. Gikas, 2021. "Techno-economic assessment of LFG to electric energy technologies at a municipal landfill: Model simulation and field measurements", Chemosphere, Vol.: 269, 128688,
  • G. Makaroglou, H. Marakas, S. Fodelianakis, A. Axaopoulou, I. Koumi, N. Kalogerakis and P. Gikas, 2021, "Optimization of biomass production from Stichococcous sp. biofilms coupled to wastewater treatment", Biochemical Engineering Journal, Vol.: 169, 107964,
  • E. Vaiopoulou and P. Gikas, 2020, "Regulations for Chromium Emissions to the Aquatic Environment in Europe and Elsewhere", Chemosphere, 254, 126876,
  • A. Siatou, A. Manali and P. Gikas, 2020, "Energy Consumption and Internal Distribution in Activated Sludge Wastewater Treatment Plants of Greece", Water, Vol.: 12, 1204, Pp. 1-16,
  • M. Farazaki and P. Gikas, 2019, “Nitrification-Denitrification of Municipal Wastewater without Recirculation, Using Encapsulated Microorganisms”, Journal of Environmental Management, Vol.:242, Pp.: 258-265,
  • P. Gikas, B. Zhu, N. -I. Batistatos and R. Zhang, 2018 “Evaluation of the Rotary Drum Reactor Process as Pretreatment Technology of Municipal Solid Waste for Thermophilic Anaerobic Digestion and Biogas Production”, Journal of Environmental Management, Vol.:216, Pp.: 96-104,
  • P. Gikas, E. Ranieri, D. Sougioultzis, M. Farazaki and G. Tchobanoglous, 2017, “Alternative collection systems for decentralized wastewater management: An overview and case study of the vacuum collection system in Eretria town, Greece”, Water Practice and Technology, Vol.:12, Iss.: 3, Pp.: 604-618,
  • P. Gikas, 2016, “Towards Energy Positive Wastewater Treatment Plants”, Journal of Environmental Management, Vol.: 203, Iss.: 2, Pp.: 621-629,
  • P. Gikas, 2016, “Ultra High Temperature Gasification of Municipal Wastewater Primary Biosolids in a Rotary Kiln Reactor for the Production of Synthesis Gas”, Journal of Environmental Management, Vol.: 203, Iss.: 2, Pp.: 688-694,

Ph.D. Candidates

  • Anthoula Manali
  • Georgios Makaroglou
  • Konstantinos Tsamoutsoglou