废茶作为吸收剂去除污染水中存在的重金属
Saddam Husain Dhobi1, Damodar Neupane2, Sudhan Koirala2
1Physical Science Unit, Nepal Academy of Science and Technology, Khumaltar, Lalitpur, Nepal.
Heliyon
|November 25, 2024
概括
茶叶废物有效地从水中去除,和等重金属. 乙三甲基化物 (CTAB) 增强了这种吸收,为工业废水处理提供了一个可持续的解决方案.
科学领域:
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 工业废水中的重金属污染对环境和健康构成重大风险.
- 传统的重金属去除方法通常是昂贵的,并产生二次污染.
- 越来越需要可持续且具有成本效益的吸附材料.
研究的目的:
- 调查茶叶衍生的废物材料作为重金属去除吸附剂的有效性.
- 为了评估不同茶叶类型和甲 (CTAB) 度对吸附效率的影响.
- 评估这些吸收剂在处理重金属污染水中的潜力.
主要方法:
- 从奶茶 (MT) 废弃物,伊拉姆茶 (IT) 废弃物和各种茶叶 (不成熟,成熟,老) 制备吸附剂.
- 使用X射线衍射 (XRD) 和富里埃变换红外光谱法 (FTIR) 进行吸附剂的表征.
- 使用具有不同CTAB度的紫外线光谱仪评估重金属 (Cd,Zn,Ni) 去除效率.
主要成果:
- 最大去除效率:Cd (IT吸收剂,100 ppm CTAB) 的82.14%,Zn (OL吸收剂,100 ppm CTAB) 的52.59%和Ni (ML吸收剂,100 ppm CTAB) 的97.73%.
- 增加的CTAB度显著增强了重金属离子的去除.
- 观察到竞争性吸附,Ni和Zn的吸附速度快于Cd;不成熟的叶子显示出有限的Ni去除.
结论:
- 茶叶衍生吸收剂显示出从污染水中去除重金属的巨大潜力.
- CTAB作为一种有效的增强剂,增强了以茶为基础材料的吸附能力.
- 这些发现强调了工业废水整治的可持续方法,尽管需要进一步优化.
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