Feasibility of the Thermal Treatment of Printworks Solid Waste

To study the feasibility of the thermal treatment of solid waste contained 2-naphthol from the printworks, the performance of the pyrolysis and combustion character of the solid waste was tested on the TG-DTA 92 thermogravimetric analyzer. This apparatus can perform experiments such as TG and DTG at the same time. The experiments were carried out at four different atmospheres. High purity nitrogen was used as the carried gas at a flow rate of 65 mL/min. The samples were heated up to 383 K at a heating rate of 10 K/min in order to dry the sample. After a drying period of 10 minutes, the samples were heated up to the desired temperature (1173 K) at the heating rate of 10 K/min. The experimental results indicate that the solid waste contained 2-naphthol is unstable and is easy to be decomposed at high temperature in the presence of oxygen. The weight loss rate of the solid waste was affected by the oxygen content of the carried gas. Pyrolysis kinetics parameters of the solid waste were obtained and a proper kinetics model was proposed.