Pyrolysis characteristics of sediment from the Dianchi Lake

Pyrolysis properties of Dianchi lake sediment in China at 10 degrees C/min and 20 degrees C/min were investigated by TG. Comparison to the TG and DTG curves at different heating rates, the pyrolysis reaction at 10 degrees C/min was in advance and more completely than at 20 degrees C/min, thus the process of sediment pyrolysis could be considered as four stages, which were the release stage of moisture and crystal water, the decomposition of light organic compounds, the decomposition of macromolecule organic matters and secondary cracking of tar and coke, and the decomposition of mineral salts. The results could provide theoretical basis for harmless treatment and resource utilization of lake sediment.