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基于Ulvan的复合气凝用于高效的甲基蓝吸附.

Stalin Kondaveeti¹, Anjon Kumar Mondal¹, Shintu Varghese¹

¹Climate Change Cluster, University of Technology Sydney, Ultimo, NSW 2007, Australia.

International journal of biological macromolecules

|April 1, 2025

概括

来自宏观藻类的Ulvan/聚乙醇 (Ulvan/PVA) 复合气凝被开发用于有效地去除水污染物. 这些环保气凝具有高的甲蓝吸附能力和可用于污染物处理的可重复使用性.

关键词:

吸附方式吸附方式吸附方式气凝是一种气凝.在冷干燥过程中进行冷干燥.甲基烯蓝色是什么颜色这是一种PVA.乌尔万·乌尔瓦恩 (Ulvan Ulvan) 是一个非常古老的民族.

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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:

宏观藻类生物量带来了处置挑战,并为可持续材料开发提供了潜力.
开发高效的吸附剂对于减轻水污染至关重要.
聚合物复合气凝显示出对环境修复应用的前景.

研究的目的:

从宏观藻类生物质合成和表征Ulvan/聚乙醇 (Ulvan/PVA) 复合气凝.
评估这些气凝在从水中去除甲基蓝 (MB) 的性能.
研究开发的复合气凝的可重复使用性和吸附机制.

主要方法:

使用化学交联方法与酸盐离子和冷干燥合成了Ulvan/PVA复合气凝.
鉴定包括水溶性,SEM,FTIR,XRD,TGA和BET表面积分析.
进行了甲蓝吸附实验,以确定吸附能力,动力学和异温模型,以及循环吸附试验.

主要成果:

乌尔万/PVA复合气凝具有低密度 (0.053 g/cm3),高表面积 (1.398 m2/g) 和出色的机械强度 (4.7 MPa在80%的应变下).
达到了526.5mg/g的最大甲基蓝吸附能力,吸附遵循伪二阶动力学和兰木尔异温模型.
气凝显示出良好的可重复使用性,在三个周期 (510,496.54和483.26 mg/g) 中保持了显著的吸附能力.

结论:

开发的Ulvan/PVA复合气凝是稳定,多孔和有效的吸附剂,用于去除甲蓝.
复合材料的协同性能有助于高吸附能力和可重复使用性.
这种合成策略为制造用于污染物处理的多糖基气凝提供了一条环保的途径.