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使用和不使用表面活性剂的水凝吸附/脱附的比较分析

Salam Abdulla Dhahir¹, Auda Jabbar Braihi¹, Salih Abbas Habeeb¹

¹Polymer and Petrochemical Engineering Department, College of Engineering Materials, University of Babylon, Babylon 51002, Iraq.

Gels (Basel, Switzerland)

|April 26, 2024

概括

为了重金属离子吸附,合成了两种新的水凝,SAP-1和SAP-2. SAP-2在 (II) 除去方面表现出高效率,证明了对净水应用的潜力.

科学领域:

材料科学材料科学材料科学
环境化学环境化学
聚合物化学聚合物化学

背景情况:

水中的重金属污染对环境和健康构成重大风险.
开发高效且可重复使用的吸附材料对于整治至关重要.
由于其多孔结构和高表面积,水凝为污染物封存提供了独特的特性.

研究的目的:

合成和描述用于重金属离子吸附的新型水凝 (SAP-1和SAP-2).
评估合成的水凝的吸附动力学和平衡能力.
通过吸附-脱附循环来评估水凝的可重复使用性.

主要方法:

通过将烯酸-co-acrylamide 移植到 pullulan 上来合成 SAP-1 水凝.
通过自由基聚合制备使用二二硫酸 (SDBS) 制备SAP-2海绵水凝.
使用富里埃变换红外光谱,1H NMR,原子吸收光谱和FE-SEM进行了表征.
对Cd (II),Cu (II) 和Ni (II) 离子的吸附动力学和平衡能力的研究.

主要成果:

无论是SAP-1还是SAP-2的水凝,都在吸附Cd,Cu,Ni和NiII) 离子方面表现出显著的有效性.
在SAP-2中,显著的Cd (II) 离子吸收能力为190.72 mg/g.
在SAP-1中,Cd (II) (146.9 mg/g) 和Cu (II) (154 mg/g) 的吸附能力较高.
在三个吸附-脱吸周期中,SAP-2 保持了相当大的Cd (II) 吸附能力.

结论:

合成的水凝,特别是SAP-2,是Cd (II),Cu (II) 和Ni (II) 离子的高效吸附剂.
这些水凝对废水处理和重金属去除的应用有前途.
SAP-2的可重复使用性表明其对可持续环境修复策略的潜力.

关键词:

吸附运动模型的吸附运动模型.吸附/脱吸方式重金属离子重金属离子普鲁兰水凝是一种水凝.可重复使用性可重复使用性.

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