能源部门通过CO2去碳化,在废物焚烧中封存灰,并将其作为活性化原料的使用
Jakub Mokrzycki1, Paweł Baran1, Magdalena Gazda-Grzywacz1
1Department of Coal Chemistry and Environmental Sciences, Faculty of Energy and Fuels, AGH University of Science and Technology, Mickiewicza 30 Av., 30-059 Cracow, Poland.
Materials (Basel, Switzerland)
|September 28, 2023
概括
城市固体废物焚烧的矿物碳化 (MSWI) 飞捕获器 CO2. 从这些灰中提取的活性材料显示压力强度降低,突出了废物利用方面的进一步研究领域.
科学领域:
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
- 废物管理 废物管理
背景情况:
- 对天然矿物质的二氧化碳封存替代品的需求越来越大.
- 城市固体废物焚烧 (MSWI) 飞灰作为潜在的二氧化碳吸收剂.
- 性激活作为一种利用废物材料的方法.
研究的目的:
- 通过矿物碳化研究MSWI飞灰的二氧化碳捕获潜力.
- 评估矿物碳化对活性飞灰材料性质的影响.
- 探索高飞灰 (HCFA) 在碳封存和材料开发中的利用.
主要方法:
- 矿物质碳化MSWI飞灰.飞灰.
- 使用氧化物和酸盐溶液 (KOH/K2SiO3或NaOH/Na2SiO3) 对碳化和无碳化粉进行性激活.
- 使用X射线衍射 (XRD),X射线光 (XRF),里叶变换红外光谱 (FTIR) 和热重力测量分析 (TG) 的表征.
- 活性化材料的压力强度测试.
主要成果:
- 通过矿物碳化,MSWI飞通过矿物碳化实现了高达0.25 mmol CO2 g-1的二氧化碳储存.
- 矿物碳化导致活性材料的压力强度下降,这归因于碳酸盐的形成.
- 在28天内,通过KOH.激活的无碳化飞灰达到3.93 MPa的最大压力强度.
- 氧化物与酸盐的比率显著影响了机械性能.
结论:
- MSWI飞灰显示了二氧化碳捕获的潜力.
- 矿物碳化对活性材料的压力强度产生负面影响.
- 进一步的研究对于优化高飞灰 (HCFA) 在碳捕获和材料应用中的利用至关重要.
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