University of Applied Science Rottenburg 1 article published in JoVE Chemistry Reducing Willow Wood Fuel Emission by Low Temperature Microwave Assisted Hydrothermal Carbonization Victoria Knappe*1, Sebastian Paczkowski*1, Luis Alonso Diaz Robles2, Alain Gonzales2, Stefan Pelz1 1Department of Forest Utilization & Biomass Fuels and Combustion, University of Applied Science Rottenburg, 2Chemical Engineering Department, Faculty of Engineering, Universidad de Santiago de Chile A protocol for the emission precursor depletion from low quality biomass by low temperature microwave assisted hydrothermal carbonization treatment is presented. This protocol includes the microwave parameters and the analysis of the biocoal product and process water.