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浸水预处理以提高性能和重金属固定在活性化溶解中MSWIFA材料的重金属固定

Shengyu Zhong¹, Liang Shen², Wanlan Xu¹

¹School of Civil Engineering and Architecture, Zhejiang Sci-Tech University, Hangzhou 310018, China.

Materials (Basel, Switzerland)

|October 16, 2025

概括

协同热解和浸水将城市固体废物焚烧飞灰 (MSWI FA) 转化为先进的建筑材料. 这一过程提高了机械强度,减少了重金属的漏,提供了一个环保的解决方案.

科学领域:

材料科学材料科学材料科学
环境工程环境工程
废物管理废物管理

背景情况:

城市固体废物焚烧飞灰 (MSWI FA) 提出了处置挑战.
提高MSWI FA的价值对于可持续的废物管理和资源回收至关重要.
活性材料为利用MSWI FA等工业副产品提供了一个有前途的途径.

研究的目的:

对MSWI FA进行热解和浸水预处理的协同效应进行研究.
将预处理的MSWI FA转化为高性能活性材料,当与地面颗粒高炉渣 (GGBS) 相结合时.
评估开发材料的机械性能,微观结构和重金属漏行为.

主要方法:

MSWI FA经过了协同预处理,包括热解,然后浸水.
预处理的FA与GGBS结合并激活,形成活性材料.
描述包括分析化学成分,水化产品,孔隙结构,机械强度和重金属漏.

主要成果:

热解显著降低了MSWI FA中的含量,并增加了活性成分.
浸水消除了导致膨胀的,并提高了反应的完整性,从而导致更密集的矩阵.
与未经处理的FA相比,双处理的FA (T-PFA) 在56天的压力强度增加了295.6%.
重金属的水量大大减少 (11.3-66.7%),并符合严格的环境标准.

结论:

综合预处理方法有效地将MSWI FA转化为高性能活性材料.
这种方法提高了材料的耐用性,并大大降低了与重金属污染物相关的环境风险.
该研究为MSWI FA在低碳建筑应用中的价值化提供了一个高效和环保的途径.

关键词:

美国MSWIFIFA 活性化材料是一种活性化材料.压力强度压力强度的压力强度.重金属固化固化过程中的重金属.热解飞行灰的飞行灰.

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