易于分离,浮动和可回收的磁性-生物炭/酸盐珠作为超吸附剂,用于在水中吸附铜离子
Dhirar Ben Salem1, Abdelkader Ouakouak2, Fouzia Touahra3
1Research Laboratory in Subterranean and Surface Hydraulics, University of Biskra, PO Box 145, Biskra 07000, Algeria.
Bioresource technology
|May 27, 2023
概括
一种新的磁性-生物炭水凝珠 (MBA-bead) 有效地从水中去除铜离子 (Cu2+). 这种创新材料具有高吸附能力和可重复使用性,为净化水提供了具有成本效益的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
- 水处理 处理水的方法
背景情况:
- 为从水中去除重金属开发高效的吸附剂至关重要.
- 磁性生物炭和水凝珠为吸附应用提供独特的特性.
研究的目的:
- 为了合成和描述一种新的磁性-生物炭水凝珠 (MBA-bead).
- 为了评估MBA-bead从水中去除Cu2+的吸附性能.
- 研究开发材料的吸附机制和可重复使用性.
主要方法:
- 使用物理交叉链接方法合成了MBA-珠.
- 材料特征包括吸附,X射线衍射 (XRD) 和表面积分析.
- 进行了批量吸附实验,以确定Cu2+的吸附能力和机制.
主要成果:
- MBA-珠子表现出高的特定表面积 (262.4 m2/g) 和毛孔体积 (0.751 cm3/g).
- 对Cu2+的Langmuir最大吸附能力在30°C和pH值为5.0时为234.1mg/g.
- 吸附机制涉及复杂化,离子交换和范德瓦尔斯力,具有占主导地位的物理吸附性质 (ΔH° = 44.30 kJ/mol).
结论:
- MBA-bead是一种高效的吸附剂,可以从水溶液中去除Cu2+.
- 该材料在与NaOH或HCl溶解后具有良好的可重复使用性.
- 估计的生产成本表明,MBA-Bead是水处理的潜在经济解决方案.
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