This work focused on the evaluation of co-combustion of sewage sludge (SS) and rice husk (RH) using thermogravimetric–Fourier transform infrared spectrometry method (TG–FTIR). The thermal behavior was assessed through the combustion characteristic, interaction, kinetics, and gaseous product characteristics. The (co-)combustion process was divided into three stages. Index D exponentially increased as RH blending ratio increased and index S also increased from 10 to 70% RH blending ratio, indicating that the combustion behavior was improved by the RH blending. The activation energy was evaluated by two model-free iso-conversional methods: Flynn–Wall–Ozawa (FWO) and Kissinger–Akahira–Sunose (KAS). The minimum value of average activation energy among blends was obtained at sample with 30% RH blending, which was 103.31 kJ/mol by FWO and 97.81 kJ/mol by KAS. Several typical gaseous products and functional groups were detected by FTIR spectrum. The results showed that CO₂ was the main volatile and its yield increased with the RH blending ratio.

这项工作的重点是使用热重-傅里叶变换红外光谱法（TG-FTIR）评估污泥（SS）和稻壳（RH）的共燃。通过燃烧特性，相互作用，动力学和气态产物特性评估热行为。（共）燃烧过程分为三个阶段。指数D随着RH混合比的增加和指数S的增加而呈指数增长。RH混合比也从10％增加到70％，表明RH混合改善了燃烧性能。活化能通过两种无模型的等转换方法进行评估：Flynn-Wall-Ozawa（FWO）和Kissinger-Akahira-Sunose（KAS）。在掺有30％RH的样品中，共混物中的平均活化能的最小值为FWO为103.31 kJ / mol，KAS为97.81 kJ / mol。FTIR光谱检测到几种典型的气态产物和官能团。结果表明，CO ₂是主要挥发物，其产率随RH混合比的增加而增加。