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Mechanical thermal expression (MTE) is an effective and efficient method of dewatering high moisture content lignite. However the high total organic carbon (TOC) of the wastewater requires further chemical treatment, before discharge to the environment. In this work, changes in the characteristics of the solid products and the wastewater are reported, when sulphuric acid is used as part of the MTE...
Thermal degradation of Shengli lignite was studied by thermogravimetry coupled with gas chromatography–mass spectrometry (TG–GC–MS) for a temperature range from room temperature to 1200°C at a heating rate of 5°C/min. The volatile products released from the lignite gradually with the programmed temperature. The main reaction of pyrolysis took place between 350°C and 800°C. Seven sub-curves were used...
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