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Hydrothermal carbonization information


Carbon microballs made from glycose via hydrothermal carbonization, that have been processed with CO2 for 6 hours to change surface properties. SEM image from University of Tartu.

Hydrothermal carbonization (HTC) (also referred to as "aqueous carbonization at elevated temperature and pressure") is a chemical process for the conversion of organic compounds to structured carbons. It can be used to make a wide variety of nanostructured carbons, simple production of brown coal substitute, synthesis gas, liquid petroleum precursors and humus from biomass with release of energy. Technically the process imitates, within a few hours, the brown coal formation process (German "Inkohlung" literally "coalification") which takes place in nature over enormously longer geological time periods of 50,000 to 50 million years. It was investigated by Friedrich Bergius and first described in 1913.[1]

  1. ^ Friedrich Carl Rudolf Bergius: Anwendung hoher Drucke bei chemischen Vorgängen und die Nachbildung des Entstehungsprozesses der Steinkohle. W. Knapp, Halle a.S. 1913, OCLC 250146190.

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