Effect of the MgO/SiO_(2) ratio on MgO–silica binders solidifying MSWI fly ash

作     者：Yin Duan Xiaobo Liu Zeinab Khalid Xuguang Jiang Yin Duan;Xiaobo Liu;Zeinab Khalid;Xuguang Jiang

作者机构：State Key Laboratory of Clean Energy UtilizationInstitute for Thermal Power EngineeringZhejiang UniversityHangzhou310027China Zhejiang University Qingshanhu Energy Research CenterLinanHangzhou311305China 

出 版 物：《Waste Disposal and Sustainable Energy》 (废弃物处置与可持续能源（英文）)

年 卷 期：2023年第5卷第4期

页      面：551-558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] 

基　　金：supported by the key program of the National Natural Science Foundation of China(Grant No.52236008) 

主　　题：Municipal solid waste incineration fly ash MgO/SiO_(2)ratio Heavy metals Immobilization Leaching behavior 

摘      要：To improve the effect of MgO–SiO_(2) binders solidifying municipal solid waste incineration fly ash(MSWI FA),MSWI FA solidified bodies with five MgO/SiO_(2) ratios(0.41~3.77)were *** leaching behavior of solidified bodies was evaluated by leaching toxicity tests and pH-dependent *** addition,hydration products in solidified bodies were analyzed by thermodynamic modeling and microstructure *** results showed that the variation in the MgO/SiO_(2) ratio had a significant effect on the leaching toxicity of the solidified bodies,because it affected the leachate pH and the composition of the hydration products of the solidified *** acid and alkali resistance of the MSWI FA was enhanced through solidification with MgO–SiO_(2) *** can improve the alkalinity of the solidified bodies and facilitate the chemical precipitation of heavy ***,silica fume,an industrial waste,can serve as a cost-effective ***,MgO–SiO_(2) binders demonstrated great potential as promising candidates for encapsulating MSWI FA.