**Author details**

María Isabel San-Martín<sup>1</sup> , Daniel David Leicester<sup>2</sup> , Elizabeth Susan Heidrich2 , Raúl Marcos Alonso1 , Raúl Mateos<sup>1</sup> and Adrián Escapa1,3\*

\*Address all correspondence to: adrian.escapa@unileon.es

1 Chemical and Environmental Bioprocess Engineering Group, Natural Resources Institute (IRENA), University of León, León, Spain

2 School of Civil Engineering and Geosciences, Newcastle University, Newcastle upon Tyne, UK

3 Department of Electrical Engineering and Automatic Systems, Universidad de León, León, Spain
