**About the Editors**

**Jos´e Mar´ıa Encinar Mart´ın** was born on September 16, 1952, in Caceres, Spain. He received a ´ Bachelor of Science degree from the Science Faculty of Extremadura University (Spain) and a Ph.D degree from the Extremadura University, in 1977 and 1984, respectively, both in chemical science. He has been working for the Extremadura University since 1977, where he is currently a Professor in the Department of Chemical Engineering and Physical Chemistry. His current research interests include combustion; pyrolysis; gasification; thermochemical processes; the energy use of the biomass residues; active carbons; and production of biodiesel, bioethanol, and biolubricants.

**Sergio Nogales Delgado** was born on March 16, 1984, in Badajoz, Spain. He received a Bachelor of Science degree and a Ph.D. degree from the University of Extremadura, in 2007 and 2016, respectively, both in chemical science. He worked as a technologist dealing with subjects like minimally processed vegetable and fruits, biomass pelletizing and emissions, and biodiesel and biolubricant production, among others. His current research interests include combustion, pyrolysis, gasification, thermochemical processes, the energy use of biomass wastes, and biodiesel and biolubricant production and characterization (including viscosity, oxidative stability, flash and combustion points, and cold filter plugging point).
