碳酸盐对化在性介质中的转化作用
Ying Li1,2, Chaoqun Zhang3, Meijun Yang3
1National Observation and Research Station of Coastal Ecological Environments in Macao, Macao Environmental Research Institute, Faculty of Innovation Engineering, Macau University of Science and Technology, Macao SAR 999078, China. liying@must.edu.mo.
Environmental science. Processes & impacts
|January 23, 2024
概括
在性环境中碳酸盐的增加会影响铁 (氧化) 氧化物的转化. 碳酸盐稍微减缓了铁酸盐的分解,抑制了戈,促进了血,改变了矿物形态,影响了铁和碳循环.
科学领域:
- 环境地质化学环境地质化学
- 矿物转化 矿物转化
- 生物地质化学循环的过程
背景情况:
- 性介质在自然和人工环境中普遍存在,影响污染物和营养物的命运.
- 大气中二氧化碳 (CO2) 的上升正在增加这些系统中的碳酸盐水平.
- 高碳酸盐在性条件下对铁 (氧化) 氧化物转化的影响尚不清楚.
研究的目的:
- 作为碳酸盐度的函数,研究性介质 (pH ~10) 中铁化转化的动力学.
- 阐明碳酸盐在影响铁 (氧化) 氧化物产品的形成和形态学的作用.
主要方法:
- 铁化转化的动力学在pH值~10下在一系列碳酸盐度 (0-286mM) 中进行了研究.
- 基于同步的X射线和振动光谱技术被用来分析矿物转化产品.
- 研究了铁 (oxyhydr) 氧化物的形态变化.
主要成果:
- 碳酸盐稍微减缓了铁酸盐的转化,并抑制了戈酸盐的形成,同时促进了血酸盐的形成.
- 碳酸盐对产品形成的影响因度而异,受吸附-脱附平衡的影响.
- 碳酸盐显著改变了血和石的形态,将它们转化为圆形,蜂形,针形和螺旋形结构.
结论:
- 由于大气二氧化碳的增加,碳酸盐度的增加可以控制铁 (氧化) 氧化物的转化途径和发生.
- 这些转变对铁和碳在各种环境中的生态化学循环有重大影响.
- 了解这些过程对于管理性环境中的污染物至关重要.
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