通过酸盐尾矿衍生的复合泥同时去除SO2和NO:对元素迁移和转换的研究
Lijuan Jia1, Shaoxiang Yang1, Jiayu Feng1
1School of Chemistry and Environment, Yunnan Minzu University, Kunming, Yunnan, 650500, People's Republic of China.
Journal of environmental management
|November 4, 2024
概括
这项研究引入了一种从工业废物中获得的新型复合泥,用于同时去除二氧化硫 (SO2) 和氧化 (NO). 该过程将废物转化为有价值的酸肥料,提供了一个环保的解决方案.
科学领域:
- 环境化学环境化学
- 材料科学 材料科学 材料科学
- 废物管理 废物管理
背景情况:
- 工业危险固体废物,特别是酸盐尾矿和黄,带来了环境挑战.
- 从工业排放中同时去除二氧化硫 (SO2) 和氧化 (NO) 的有效方法至关重要.
研究的目的:
- 使用工业危险固体废物开发复合泥,用于SO2和NO的去除.
- 在污染物清除过程中调查 (P) 在泥中的迁移和转化.
- 探索反应副产品作为化肥生产原材料的潜力.
主要方法:
- 使用酸盐尾矿和黄色的复合泥的开发.
- 对SO2和NO去除效率的实验分析.
- 研究参与反应的活性相 (Ca5 PO4) 3F,CaMg CO3) 2和黄色 (P4).
- 元素迁移和转化 (浸出,氧化) 的表征.
主要成果:
- 复合泥证明了有效的同时去除SO2和NO.
- 酸化物 (Ca5 ((PO4) 3F) 和碳酸 (CaMg ((CO3) 2) 被确定为去除SO2的关键活性阶段.
- 黄色 (P4) 促进了臭氧 (O3) 的产生,将NO氧化为酸盐 (NO3-).
- 观察到大量的作为酸盐 (PO43-) 浸出到液相,在气相中微小的氧化到P2O5.
结论:
- 开发的复合泥有效地从排放中去除SO2和NO.
- 该过程产生了富含酸盐和酸盐的液态相,适合生产-复合肥料.
- 这种方法为危险废物利用和污染控制提供了一种可持续的方法.
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