Influence of the parameters of the hydrothermal carbonization of the biomass on the biocoal obtained from peat

Abstract

Hydrothermal carbonization is modern low-temperature method to improve characteristics of peat and other types of biomass as a fuel. The influence of methods at different temperatures and different reaction time the physical-chemical and energy properties of the resulting biochar is studied. Characteristics of the initial peat and hydrochar were determined such as elemental composition, ash content, moisture content, heating values. It has been established that with an increase in temperature and reaction time, yield of hydrochar oxygen in it decreases (from 33.1% - initial peat to 19.47% - hydrochar obtained at 230 °C), but carbon (from 52.09% - initial peat to 68.17% - hydrochar obtained at 230 °C) and heating value increases. Also was observed leaching the inorganic component from hydrochar into the water.