合成,表征,实验设计和重金属吸附的过程分析,在小麦草的基础上,基于阿米多克西姆生物吸附剂的重金属吸附
Mostafa Sheikhmali1, Elham Jalilnejad2, Reza Rafiee1
1Faculty of Chemical Engineering, Urmia University of Technology, Urmia, 17165‑57166, Iran.
Scientific reports
|December 27, 2024
概括
小麦纤维素被修改为西兰和聚烯二,以创建一种生物吸收剂,用于从水中去除 (Pb(II)) 离子. 这种新型吸附剂实现了高吸附能力,证明了其在废水处理方面的潜力.
科学领域:
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
- 聚合物化学 聚合物化学
背景情况:
- 像小麦纤维素这样的天然生物聚合物为污染物清除提供了可持续的替代方案.
- 化学修饰对于提高生物聚合物的吸附性质至关重要.
- (Pb) 是一种有毒的重金属污染物,需要有效的整治策略.
研究的目的:
- 为了合成和表征一种新的小麦草衍生生物复合物吸附剂,用于Pb (II) 的去除.
- 调查工艺参数对吸附剂效率的影响.
- 评估开发材料的吸附机制和吸附能力.
主要方法:
- 小麦纤维素通过现场聚合改造,使用3-三甲基烯酸甲酸 (MPS) 和聚烯 (PAN) 来改造.
- 用MPS修改的小麦 (MPS-WS) 被化,形成了AO-WS吸附剂.
- 采用了塔古奇的实验设计,以优化Pb (II) 去除效率,随后使用FE-SEM,FTIR,XRD和TGA进行了表征.
- 为了了解吸附机制,进行了动力学和异热学研究.
主要成果:
- FTIR分析证实了成功修改和去除红素/血纤维素的结果.
- 复合物形成增强了小麦的热稳定性.
- 在最佳条件下 (400 rpm ,60 mg/L Pb,0.1 g 吸附剂),最大吸附能力为 22.26 mg/g.
- ANOVA表明,吸附剂剂量和初始金属离子度显著影响去除效率.
结论:
- 生物复合物吸附剂AO-WS显示了从水溶液中去除Pb (II) 的高效率.
- 伪二次运动模型和杜比宁-拉杜什基维奇等热量最好地描述了吸附过程.
- 这项研究强调了改性天然生物聚合物的潜力,用于废水处理中的重金属整治.
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