School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China.
School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China.
Bioresour Technol. 2018 Jan;247:217-225. doi: 10.1016/j.biortech.2017.09.039. Epub 2017 Sep 9.
Effects of the three metal carbonates (KCO, NaCO, and MgCO) were quantified on catalytic co-combustion of the sewage sludge and water hyacinth (SW) blend using a thermogravimetric-mass spectrometric (TG-MS) analysis and kinetics modeling. The main dominating steps of the catalysts were the organic volatile matter release and combustion stage. Weighted mean values of activation energy (E) were estimated at 181.18KJ·mol, 199.76KJ·mol, 138.76KJ·mol, and 177.88KJ·mol for SW, SW+5% KCO, SW+5% NaCO, and SW+5% MgCO, respectively. The lowest E occurred with SW+5% NaCO. Overall, catalyst effect on co-combustion appeared to be negligible as indicated by Gibbs free energy (ΔG). The normalized intensities of SW+MgCO were strongest. The addition of NaCO and MgCO to SW increased flue gases emissions (CO, NO, SO, HCN, and NH) of SW, whereas the addition of KCO to SW reduced flue gases emissions from the entire combustion process.
采用热重-质谱联用（TG-MS）分析和动力学建模方法，定量研究了三种金属碳酸盐（KCO、NaCO 和 MgCO）对污水污泥和水葫芦（SW）混合物共催化燃烧的影响。催化剂的主要作用步骤为有机挥发物的释放和燃烧阶段。SW、SW+5%KCO、SW+5%NaCO 和 SW+5%MgCO 的加权平均活化能（E）值分别为 181.18KJ·mol、199.76KJ·mol、138.76KJ·mol 和 177.88KJ·mol。SW+5%NaCO 的 E 值最低。总体而言，催化剂对共燃烧的影响似乎可以忽略不计，这可以通过吉布斯自由能（ΔG）来表示。SW+MgCO 的归一化强度最强。NaCO 和 MgCO 的添加增加了 SW 的烟气排放（CO、NO、SO、HCN 和 NH），而 KCO 的添加减少了整个燃烧过程的烟气排放。
