工业废弃物的行为作为地聚合化之前的金属替代品:一项比较研究
Michelina Catauro1, Antonio D'Angelo1, Francesco Genua2
1Department of Engineering, University of Campania "Luigi Vanvitelli", Via Roma 29, 81031 Aversa, Italy.
Materials (Basel, Switzerland)
|September 13, 2025
概括
这项研究探讨使用工业废物,如红泥和吸尘作为地质聚合物前体. 虽然一些废物表现出抗菌性质,但漏水问题和机械强度降低需要进一步研究可持续的地质聚合物应用.
科学领域:
- 材料科学 材料科学 材料科学
- 地质聚合物化学 地质聚合物化学
- 废弃物价值化 废弃物价值化 废弃物价值化
背景情况:
- 传统的地质聚合物前体,如飞灰,已经得到了很好的应用.
- 探索新型工业废物作为金属的部分替代品对于可持续建筑材料至关重要.
- 研究各种废物流对地质聚合物特性的影响对于扩大其应用至关重要.
研究的目的:
- 评估四种工业废物 (吸尘,红泥,电过器灰尘,提取污泥) 作为地质聚合物合成中的20%重量%的金属替代物.
- 评估这些废弃物替代品对产生的地质聚合物的结构,热,机械,化学和抗菌特性的影响.
- 根据这些废弃物衍生地质聚合物的特性和环境影响,确定这些废弃物衍生地质聚合物对于潜在应用的适用性.
主要方法:
- 地质聚合物合成,将20%的工业废物 (SW1-4) 作为金属替代品.
- 福里埃变换红外 (FT-IR) 光谱仪用于地聚合确认.
- 稳定性测试 (热和水应力) 来评估耐用性.
- 机械评估的压力强度测试.
- 漏试验以确定潜在有害元素的释放.
- 对于脱水和分解行为进行热分析 (TGA/DSC).
- 抗微生物活性测定对大肠杆菌和菌.
主要成果:
- 通过FT-IR确认了成功的地质聚合,并将Al纳入地质聚合物结构.
- 所有合成的地质聚合物 (GPSW1-4) 在热和水应力下都表现出稳定性,尽管GPSW3表现出增加的花.
- 与对照 (GP) 相比,所有废物替代地质聚合物中的压缩强度都下降了.
- 泄漏测试显示,对GPSW1和GPSW4.4的抗氧化物 (Sb) 释放超过了法律限制.
- 废物成分影响了热性行为;对大肠杆菌 (E. coli) 观察到抗菌活性,但对菌 (E. faecalis) 影响较小.
- 红泥 (SW2) 和电过器灰尘 (SW3) 被很好地捕获,但机械性能降低;它们的抗菌潜力被认为是表面涂料.
- 吸尘 (SW1) 需要预处理,因为不稳定的Sb水;提取污泥 (SW4) 显示出有希望的压力强度和热稳定性,适合内部加强.
结论:
- 工业废物可以纳入地质聚合物,但必须仔细考虑它们对机械性能和漏行为的影响.
- 虽然一些废弃物衍生地质聚合物表现出有益的抗微生物特性,但必须遵守有关重金属 (例如,) 漏的环境法规.
- 提取污泥 (SW4) 显示出建筑材料结构应用的潜力,而红泥 (SW2) 和电过器灰尘 (SW3) 在进一步评估后可能适用于抗微生物表面涂层.
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