Co-pyrolysis of Sewage Sludge with Paint Sludge: Kinetics and Thermodynamic Analysis via Iso-conversional Methods

作     者：周尚群 赵青林 YU Tian YAO Xiaojie ZHOU Shangqun;ZHAO Qinglin;YU Tian;YAO Xiaojie

作者机构：State Key Laboratory of Silicate Materials for ArchitecturesWuhan University of TechnologyWuhan 430070China School of Mate-rials Science and EngineeringWuhan University of TechnologyWuhan 430070China 

出 版 物：《Journal of Wuhan University of Technology(Materials Science)》 (武汉理工大学学报（材料科学英文版）)

年 卷 期：2024年第39卷第3期

页      面：716-727页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：Funded by National College Student Innovation and Entrepreneurship Training Program Project(No.CY202036)。 

主　　题：sewage sludge co-pyrolysis automotive paint sludge evolved gas analysis 

摘      要：This study explored the synergistic interaction of sewage sludge(SS)and automotive paint sludge(PS)during co-pyrolysis for the optimized treatment of sewage sludge in cement kiln systems,utilizing thermogravimetric analysis(TGA)and thermogravimetric-mass spectrometry(TGA-MS).The result reveals the coexisting synergistic and antagonistic effects in the co-pyrolysis of SS/PS.The synergistic effect arises from hydrogen free radicals in SS and catalytic components in PS,while the main source of the antagonistic effect is that,during the mechanical mixing process,the SS/PS is converted from the particulate form into a dough-like rubbery which contributes to the film-forming effect,hindering the volatilization of volatile components.SS/PS co-pyrolysis reduces the yielding of tar production while increasing coke and gas.This study will provide some in-depth insights into the co-pyrolysis of SS/PS,and offer theoretical support for the subsequent research on the collaborative disposal processes in cement kilns.