废物被复合成用于垃圾填埋污水处理的吸附剂
K K P S Kumara1, W K C Neetha Dayanthi2
1Department of Civil and Environmental Engineering, Faculty of Engineering, University of Ruhuna, Hapugala, Galle, Sri Lanka E-mail: neetha@cee.ruh.ac.lk; neetha02@gmail.com.
Journal of water and health
|December 28, 2023
概括
这项研究表明,由废物制成的复合吸附剂有效地从垃圾填埋场液中去除重金属,氨 (NH3-N) 和化学氧气需求 (COD). 它为废物管理和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
- 废物管理 废物管理
背景情况:
- 垃圾填埋场液由于重金属,氨 (NH3-N) 和化学氧气需求 (COD) 造成了重大环境风险.
- 从废物中开发具有成本效益和可持续性的吸附剂对于有效的液处理至关重要.
研究的目的:
- 研究一种由废弃物制成的复合吸附剂的有效性,用于从垃圾填埋液中去除重金属 (Pb, Zn, Cu, Fe),NH3-N和COD.
- 确定最佳的实验条件,包括接触时间和吸附剂剂量,以最大限度地去除污染物.
- 用同热和动力模型评估吸附行为.
主要方法:
- 为了评估吸附性能,进行了批量吸附实验.
- 确定了每个目标污染物的最佳接触时间和吸附剂剂量.
- 吸附数据与Langmuir和Elovich等温模型相匹配,并使用伪二阶模型分析动力数据.
主要成果:
- 复合吸附剂获得了高的去除效率:Pb为96.4%,Zn为92.7%,Cu为60.3%,Fe为87.1%,NH3-N为75.0%,COD为67.5%.
- 最佳接触时间在15到180分钟之间,剂量在5到30g之间,取决于污染物.
- 和铁的吸附最适合兰穆尔模型,而Zn,Cu,NH3-N和COD适合埃洛维奇模型,所有人都观察到伪二次动力学.
结论:
- 复合吸附剂显示出大量的潜力,可以同时从垃圾填埋场水中去除各种污染物.
- 利用废弃物用于吸附剂生产,为废物处理和环境修复提供了一种可持续的方法.
- 这些发现支持这种吸附剂作为处理复杂工业废水的环保解决方案的可行性.
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