AGH University of Science and Technology, Faculty of Metals Engineering and Industrial Computer Science, Al. Mickiewicza 30, 30-059 Krakow, Poland.
Waste Manag. 2014 Jan;34(1):174-9. doi: 10.1016/j.wasman.2013.10.033. Epub 2013 Nov 12.
In this study, the combustion and pyrolysis processes of three sewage sludge were investigated. The sewage sludge came from three wastewater treatment plants. Proximate and ultimate analyses were performed. The thermal behaviour of studied sewage sludge was investigated by thermogravimetric analysis with mass spectrometry (TGA-MS). The samples were heated from ambient temperature to 800 °C at a constant rate 10 °C/min in air (combustion process) and argon flows (pyrolysis process). The thermal profiles presented in form of TG/DTG curves were comparable for studied sludges. All TG/DTG curves were divided into three stages. The main decomposition of sewage sludge during the combustion process took place in the range 180-580 °C with c.a. 70% mass loss. The pyrolysis process occurred in lower temperature but with less mass loss. The evolved gaseous products (H2, CH4, CO2, H2O) from the decomposition of sewage sludge were identified on-line.
本研究对三种污水污泥的燃烧和热解过程进行了考察。这些污水污泥分别来自三座污水处理厂。对其进行了工业分析和元素分析。采用热重-质谱联用分析仪（TGA-MS）对研究用污水污泥的热行为进行了研究。在空气（燃烧过程）和氩气流（热解过程）中，以 10°C/min 的恒定升温速率将样品从室温加热至 800°C。以 TG/DTG 曲线的形式呈现的热曲线在研究污泥中是可比的。所有 TG/DTG 曲线都被分为三个阶段。在 180-580°C 范围内，污水污泥的主要分解发生在 70%左右的质量损失。热解过程发生在较低的温度下，但质量损失较小。在线识别了从污水污泥分解中产生的气态产物（H2、CH4、CO2、H2O）。
