在路面施工中可持续利用焚烧底灰:环境影响和生命周期评估
Deepesh Bansal1, G V Ramana1, Manoj Datta1
1Department of Civil Engineering, Indian Institute of Technology Delhi, New Delhi 110016, India.
The Science of the total environment
|May 1, 2024
概括
生命周期评估 (LCA) 显示,道路建设中的处理过的焚烧底灰 (IBA) 提供了可持续性的好处. 未经处理的IBA会增加毒性,但经过处理或限制的IBA使用会减少全球变暖的影响.
科学领域:
- 土木工程 土木工程是指土木工程.
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
背景情况:
- 可持续发展推动土木工程转向二次材料,如焚烧底灰 (IBA).
- 对废物焚烧底灰的有效管理策略至关重要.
- 有限的生命周期评估 (LCA) 研究存在于IBA特征和现场条件上.
研究的目的:
- 提出并进行LCA,以评估在路面层中用IBA取代天然聚合物对环境的影响.
- 为了比较不同的IBA重复使用场景与传统的聚合物使用和填埋.
主要方法:
- 进行了比较生命周期评估 (LCA).
- 场景包括:生产,处理,限制重复使用,常规聚合物和垃圾填埋的IBA.
- 在影响评估中使用了具有层次观点的ReCiPe技术.
- 研究了数据的可变性 (填埋场高度,透,持续时间,运输距离).
主要成果:
- 将IBA纳入道路层可以减少超过35%的全球变暖影响.
- 未经处理的IBA的浸出性增加了28%以上的人类致癌毒性,使其不适合使用.
- 经过处理的IBA重复使用是最可持续的选择,最长可达d + 15公里.
- 限制的IBA使用是可行的,直到d + 5公里.
结论:
- 这项研究为评估IBA在道路建设中的再利用提供了一个框架.
- 处理或限制的IBA为天然聚合物提供了一个可持续的替代方案,平衡环境效益和风险.
- 该研究促进了建筑行业的可持续材料管理.
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