在单元和双元系统中有效吸附和离子,使用从花生中制备的环保吸附剂
Natália Trindade Pessôa1, Deivson Cesar Silva Sales2, Graziele Elisandra Do Nascimento1
1Departamento de Engenharia Química, Universidade Federal de Pernambuco, Av. Prof. Arthur de Sá, S/n, 50740-521, Recife, PE, Brazil.
Environmental research
|January 19, 2024
概括
花生可以转化为有效的吸附剂,用于从废水中去除和. 碳化花生 (CCarb) 与激活版本相比,表现出优越的性能,为废水处理提供了可持续的解决方案.
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:
- 农业工业废弃物,如花生,构成了处理的重大挑战.
- 污染废水的重金属,如和造成环境和健康风险.
- 开发具有成本效益和可持续的吸附剂对于有效的废水处理至关重要.
研究的目的:
- 研究花生的潜力,作为吸附剂的前体,从废水中去除和离子.
- 为了比较碳化 (CCarb) 和活性 (CATQ) 花生吸附剂的吸附效率.
- 了解影响吸附性能的结构和化学特性.
主要方法:
- 花生被加工成碳化 (CCarb) 和活性 (CATQ) 吸附剂.
- 在单组件和双组件系统中使用和离子进行吸附实验.
- 分析了表面积,毛孔体积和表面功能组.
- 吸附数据与等温模型相匹配,主要是弗洛伊德利希模型.
主要成果:
- 碳化花生 (CCarb) 的吸附能力高于活性花生 (CATQ).
- 碳化增加了表面积和毛孔体积,而酸激活由于H+位点而产生不利影响.
- 吸附平衡的速度很快达到 (Cd<90分钟,Ni<60分钟).
- 的最大吸附能力为17.04 mg/g,的最大吸附能力为31.28 mg/g,符合弗洛伊德利希模型.
- 在双组件系统中观察到对抗作用.
结论:
- 碳化花生是一种有希望的,低成本的吸附剂,用于从废水中去除和.
- 吸附剂的结构和化学特性显著影响重金属吸附效率.
- 来自花生的吸附剂提供了一种可持续的环境修复方法,使技术和生态目标保持一致.
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