在热带土壤中用天然铁作为泥相反应堆中的催化剂氧化的可持续方法,辅助硫酸盐
Mohammad Qutob1, Mohd Rafatullah1, Syahidah Akmal Muhammad1
1Environmental Technology Division, School of Industrial Technology, Universiti Sains Malaysia, Penang 11800, Malaysia. mohd_rafatullah@yahoo.co.in.
Environmental science. Processes & impacts
|July 8, 2024
概括
这项研究使用热带土壤作为高级氧化过程的催化剂,从受污染的土壤中去除 (PHE),达到81%的去除. 该方法显示,尽管土壤矩阵发生了微小的改变,但它仍然有望实现可持续的土壤修复.
科学领域:
- 环境科学 环境科学
- 环境化学环境化学
- 催化剂是一种催化剂.
背景情况:
- 天然铁矿物质中的杂质阻碍了它们在先进的氧化过程 (AOP) 中作为催化剂的使用,以改善土壤.
- 热带土壤,低杂质和天然铁含量,被调查为潜在的催化材料.
研究的目的:
- 通过AOP.评估热带土壤的催化活性,以通过PHE补救AOP.
- 了解降解机制,并评估对土壤矩阵的影响.
主要方法:
- 使用热带土壤和硫酸盐的高级氧化工艺 (AOP).
- 氨酸 (PHE) 去除和矿化测量.
- 使用GC-MS分析土壤基质变化和识别降解副产品.
主要成果:
- 在24小时内在最佳条件下 (pH7,55°C,特定硫酸盐度) 达到81%的PHE去除和61%的矿化.
- 确定了硫酸盐基 (SO4 ̇−) 作为主要的反应物种,其次是O2 ̇−,HO ̇起到较小的作用.
- 观察到土壤基质变化,包括聚合物裂变和减少晶体大小,以及铁和含量下降.
结论:
- 热带土壤展示了PHE修复使用AOP的催化潜力,提供了一个可持续的,无催化剂的方法.
- 该过程是有效的,但需要进一步调查如何管理土壤矩阵的影响.
- 这种方法通过利用自然材料和减少对外部催化剂的需求,促进了对环境友好的土壤整治.
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