用RSM和Taguchichi的优化方法确定重金属对Cal-LDH-PC的吸附有影响的参数和条件
Ava Mohrazi1, Reza Ghasemi-Fasaei2, Amin Mojiri3
1Department of Soil Science, School of Agriculture, Shiraz University, Shiraz, Iran.
Scientific reports
|June 8, 2024
概括
这项研究开发了一种有效的生物吸收剂,用于从废水中去除重金属. 优化的Cal-LDH-PC复合材料在去除,,和方面表现出高效率.
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:
- 废水中的重金属污染对环境和健康构成重大风险.
- 吸附是重金属修复的一个关键过程.
- 开发高效和经济的吸附剂对于废水处理至关重要.
研究的目的:
- 调查有效的参数,以改善重金属的生物吸附去除 (HM).
- 描述和优化一种来自甘果汁的新型复合吸附剂 (Cal-LDH-PC).
- 用响应表面方法 (RSM) 确定重金属吸附的最佳条件.
主要方法:
- 使用SEM,EDX,BET和FTIR进行化层双氧化物 (Cal-LDH),pectin (PC) 和Cal-LDH-PC复合物的表征.
- 使用RSM对 (Zn), (Cd), (Ni) 和 (Pb) 的吸附的研究.
- 优化操作因素,包括度,反应时间,吸附剂剂量和pH值.
主要成果:
- 与Cal-LDH.PC相比,Cal-LDH-PC复合物表现出明显增强的表面积 (120 m2 g-1) 和孔径 (18 nm) 与Cal-LDH.
- FTIR分析证实,Cal-LDH-PC具有更多的功能组用于吸附.
- 在最佳条件下,Zn的去除效率达到99%,最大吸附能力为300 mg g-1.1.
- 度是去除效率的一个主要因素,除了Ni,其中吸附剂剂量是最重要的.
结论:
- 来自甘果汁的Cal-LDH-PC是一种有能力,有用和经济的吸附剂,用于去除重金属.
- 这项研究突出了修改后的多层双氧化物与自然材料相结合的废水整治潜力.
- RSM提供了一种精确的方法来优化吸附参数并了解它们的相互作用.
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