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通过SA-Er生物聚合物凝球有效去除直接染料:平衡异温,动力学和再生性能研究
Chen Chen1, Enhui He1, Xiaohui Jiang1
1Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China.
International journal of biological macromolecules
|August 6, 2024
概括
这项研究开发了稳定的erbium alginate (SA/Er) 水凝微球,以有效地从废水中去除染料. 这些基于生物质的吸附剂显示出高容量和可重复使用性,为染料处理提供了可持续的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
- 化学 化学 化学
背景情况:
- 基于生物质的吸附剂为水处理提供了具有成本效益和环保的解决方案.
- 开发稳定且高效的吸附剂对于去除性污染物,如色剂至关重要.
研究的目的:
- 为了合成和描述新型的藻酸 (SA/Er) 水凝微球.
- 调查SA/Er对高度亚染料 (直接紫色N和直接深绿NB) 的吸附性能.
- 阐明吸附机制并评估吸附剂的可重复使用性.
主要方法:
- 一步合成SA/Er水凝微球.
- 使用SEM-EDS,XRD,TGA,FT-IR,UV-Vis,BET-BJH和XPS进行表征.
- 在不同条件下的吸附实验,动力和异热模型.
- 溶解和可重复使用性测试.
主要成果:
- SA/Er微球表现出高稳定性和极好的直接紫色N (692 mg/g) 和直接深绿色NB (864 mg/g) 的吸附能力.
- 吸附遵循准二次动力学和兰木尔异热模型,表明表面单层上的物理和化学吸附.
- 吸附剂在七个脱吸周期后保持了超过79.7%的去除效率.
结论:
- SA/Er水凝微球是高度亚染料的有效和可重复使用的吸附剂.
- 吸附机制包括结,静电吸引和表面复杂化.
- 这项研究为使用生物质衍生材料处理含有染料的废水提供了宝贵的参考.
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