硅酸盐通报2024，Vol.43Issue(10)：3765-3771,7.
碱激发螯合生活垃圾焚烧飞灰力学性能和毒性浸出特性
Mechanical Properties and Toxic Leaching Characteristics of Alkali-Activated Chelated Municipal Solid Waste Incinerator Fly Ash
摘要
Abstract
After the chelation and solidification of municipal solid waste incineration fly ash,there are still certain environmental hazards.Landfilling will occupy a large amount of land,and reusing can alleviate the pressure on landfill site.This article used alkali activation technology to prepare chelated fly ash mineral powder based alkali-activated cementitious material.In addition to exploring the feasibility of alkali-activated chelated fly ash,the influence of calcium oxide content on improving the performance of cementitious material was also explored.The results show that the compressive strength of solidified body is highest when calcium oxide content is 4％(mass fraction),while the compressive strength of solidified body slowly decreases when calcium oxide content exceedes 4％.The addition of calcium oxide promotes the formation of hydration products of C-S-H gel and significantly improves the compressive strength of material.Meanwhile,through leaching tests,it is found that the heavy metal leaching concentration of solidified body doped with calcium oxide is lower than that of solidified body without calcium oxide,and meets the limit values specified in"Standard for pollution control on the landfill site of municipal solid waste"(GB 16889-2008).关键词
生活垃圾焚烧飞灰/螯合飞灰/碱激发胶凝材料/抗压强度/毒性浸出Key words
municipal solid waste incinerator fly ash/chelated fly ash/alkali-activated cementitious material/compressive strength/toxicity leaching分类
资源环境引用本文复制引用
卢诗琳,丁秀明,罗琦,叶伟开,董发鑫,吴培喜,马俊,汪峻峰..碱激发螯合生活垃圾焚烧飞灰力学性能和毒性浸出特性[J].硅酸盐通报,2024,43(10):3765-3771,7.基金项目
海南省重点研发项目(ZDYF2022SHFZ322) （ZDYF2022SHFZ322）
