Aurora Rosa-Masegosa is a Ph.D. student at the Department of Microbiology, Faculty of Pharmacy, University of Granada. She graduated in biology in 2016 from the University of Granada, and posteriorly, she obtained a master's degree in microbiology from the same university. She has been involved in three research projects, one of which she has been PI.

Alejandro Rodriguez-Sanchez obtained his M.S. in sciences and techniques of water quality and his Ph.D. in civil engineering at the University of Granada. During 2019–2022, he was a postdoctoral research assistant at the Department of Horticulture and Landscape Architecture at Purdue University. He is now a postdoctoral researcher at the Water Institute, University of Granada. His research has been focused on the microbial communities in man-made environments, how they shape these environments and are shaped by them, and how to engineer microbial communities in man-made systems for the environmental protection of water resources and the development of agriculture.

Susanna Gorrasi received her master's degree in cellular and molecular biology and her Ph.D. in ecology and sustainable management of environmental resources at the Department of Ecological and Biological Sciences, University of Tuscia, Viterbo, Italy. She completed her "Predoctoral Fellowship" period abroad at the Microbiology Laboratory, Department of Microbiology of the Faculty of Pharmacy of the University of Granada, and is now a postdoctoral researcher at the University of Tuscia. She is also a member of the Italian Society of General Microbiology and Microbial Biotechnologies (SIMGBM) and the Balkan Environmental Association (B.EN.A.). She conducts research in microbiology, molecular biology, and mycology.

Massimiliano Fenice graduated from the University of Genova and received his M.S. in 1983. He is now a full professor of microbiology at the Department of Ecological and Biological Sciences (DEB), the head of the Microbiology Laboratory of the DEB and the Laboratory of Marine Applied Microbiology of CoNISMa (Consorzio Nazionale Interuniversitario Scienze del Mare), University of Tuscia, Viterbo, Italy. He is also a member of the following International Scientific Societies: MSA, Mycological Society of America; EUCHIS, European Chitin and Chitosan Society (member of the Society Board); BENA, Balkan Environmental Association (Chairman of the Mediterranean Liason Office); and SIMGBM, Società Italiana di Microbiologia Generale e Biotecnologie Microbiche (Italian Society of General Microbiology and Microbial Biotechnology).

Alejandro Gonzalez-Martinez graduated in pharmacy in 2009 at the University of Granada, obtaining in his fifth year of graduation a national collaboration scholarship. Subsequently, he completed his international doctoral thesis at the University of Granada, studying new autotrophic nitrogen elimination systems, both from a technical and microbiological point of view. As part of his doctoral thesis, he spent a stay at the Technical University of Delft (Holland), where he had the opportunity to work with full-scale anammox bioreactors. After he obtained his Ph.D., he was awarded the Extraordinary Doctorate Prize by the University of Granada and received the third edition of the SACYR Awards. Then, he worked as a postdoctoral fellow at the University of Granada and the Technical University of Aalto (Finland). He joined the Department of Microbiology of the University of Granada, where he is a full professor at the university, carrying out teaching and research work. In 2019, he was awarded the Best Young Researcher at the University of Granada. Currently, he is the editor of several international journals. His research is based on the development of new granular technologies within the wastewater area, as well as the development of energy production technologies through direct electricity production or by obtaining hydrogen and ammonia.

Jesus Gonzalez-Lopez is the head of the Environmental Microbiology and Engineering Research Group and a full professor at the Department of Microbiology, Faculty of Pharmacy, University of Granada. He has extensive experience in water technology and environmental research. He is also a consultant for companies such as Veolia, SACYR, and Repsol-YPF, among others. He has coordinated EU projects (11 framework programs, 3 training networks, cost actions, and 1 Marie Curie grant holder, an ASEAN-EU environmental biotechnology network program).

Barbara Muñoz-Palazon is a postdoctoral researcher at the Department of Ecological and Biological Sciences (DEB), University of Tuscia. She received her M.S. (2016) in techniques and sciences of water quality, her Ph.D. (2020) in fundamental and systems biology, and was a postdoctoral scientist (2020–2024) at the University of Granada.