在中国,石材的利用是否可以可持续? 一个综合生命周期环境和经济评估
Ao Zeng1, Xiong Shi2, Hui Zhang3
1Hubei Key Laboratory of Multi-media Pollution Cooperative Control in Yangtze Basin, School of Environmental Science & Engineering, Huazhong University of Science and Technology, Wuhan, China.
Journal of environmental management
|February 28, 2026
概括
由于大量的废物,石膏 (PG) 管理具有挑战性. 使用PG作为水泥减速剂提供了最大的环境效益,而生产石膏产品则产生了最高的利能力,这使得这两种选择都是可持续的.
科学领域:
- 环境科学 环境科学
- 工业生态学 工业生态学
- 废物管理 废物管理
背景情况:
- 石 (PG) 是酸盐行业的主要固体废物,中国每年产生7000万至8000万.
- 目前的PG利用方法存在争议,需要进行比较评估.
研究的目的:
- 评估和比较四种典型的石利用和处置途径.
- 整合生命周期评估和经济评估,以实现可持续的废物管理.
主要方法:
- 现场调查用于前景数据收集.
- 生命周期评估 (LCA) 用于量化环境影响.
- 经济评估以确定利能力和成本.
主要成果:
- 石的储存在所有影响类别中都会对环境造成重大负担.
- 水泥减速器路径提供了最大的环境效益,减少了高达2.1t/t的CO2eq.
- 石膏产品提供了最高的利能力,而水泥延迟剂也显示出积极的环境净货币化带来的前景.
结论:
- 环境和经济评估的整合对于可持续的石膏管理至关重要.
- 石膏产品和水泥减速剂都是储存的经济和环境可行的替代品.
- 研究结果为政策制定者和石废物管理行业的利益相关者提供了可操作的见解.
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