Search results for " pyrochar"

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Mechanisms of Water Interaction with Pore Systems of Hydrochar and Pyrochar from Poplar Forestry Waste

2014

The aim of this study was to understand the water-surface interactions of two chars obtained by gasification (pyrochar) and hydrothermal carbonization (hydrochar) of a poplar biomass. The two samples revealed different chemical compositions as evidenced by solid state (13)C NMR spectroscopy. In fact, hydrochar resulted in a lignin-like material still containing oxygenated functionalities. Pyrochar was a polyaromatic system in which no heteronuclei were detected. After saturation with water, hydrochar and pyrochar were analyzed by fast field cycling (FFC) NMR relaxometry. Results showed that water movement in hydrochar was mainly confined in very small pores. Conversely, water movement in py…

Magnetic Resonance SpectroscopyWater flowSettore AGR/13 - Chimica Agraria1600 General Chemistry1100 General Agricultural and Biological SciencesHydrothermal carbonizationAdsorptionBiocharmedicine910 Geography & travelPorosityWaste ProductsChemistryTemperatureWaterForestryGeneral Chemistry10122 Institute of GeographyPopulusAgronomyChemical engineeringCharcoalGeneral Agricultural and Biological SciencesPorous mediumSaturation (chemistry)Porosityfast field cycling NMR relaxometry hydrochar pyrochar biochar water dynamicsActivated carbonmedicine.drug
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