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来自海垃圾的环保水凝珠,以有效地从水中去除重金属

Zaineb Mchich¹, Daniela Simina Stefan², Rachid Mamouni¹

¹Team of Biotechnology, Materials, and Environment, Faculty of Sciences, Ibn Zohr University, Agadir BP 8106, Morocco.

|December 17, 2024

概括

这项研究开发了从Cellana Tramoscrica海和酸去除重金属的新型水凝珠. 这种环保吸附剂有效地从废水中去除铜 (II) 和 (II).

科学领域:

材料科学材料科学材料科学
环境化学环境化学
纳米技术纳米技术

背景情况:

水体的重金属污染对环境和健康构成重大风险.
消除有毒金属如铜 (II) 和 (II) 的有效和可持续方法对于废水处理至关重要.
从自然资源中开发低成本,高性能吸附剂是一个活跃的研究领域.

研究的目的:

合成和表征一种基于碳酸的新型吸附剂 (Na-Alg@CTs) 来自Cellana Tramoscrica海贝和藻酸盐.
为了评估Na-Alg@CTs水凝珠在从水溶液中去除Cu (II) 和Zn (II) 的效率.
研究Cu (II) 和 Zn (II) 除去的吸附机制,动力学和热力学.

主要方法:

通过将Cellana Tramoscrica衍生碳酸纳入藻酸盐基质中来合成水凝珠.
使用X射线衍射 (XRD),扫描电子显微镜与能量分散X射线光谱 (SEM/EDS) 和富里埃转换红外光谱 (FTIR) 进行吸附剂的表征.
吸附实验以确定吸附能力,同热量 (兰木尔模型),动力学 (伪二阶模型) 和热力学.

主要成果:

XRD,SEM/EDS和FTIR证实了Na-Alg@CTs吸附剂的成功制造和组成.
朗穆尔吸附模型最好地描述了吸附过程,表明单层覆盖.
Na-Alg@CTs水凝珠的吸附能力很高:Cu (II) 的吸附能力为368.58 mg/g,Zn (II) 的吸附能力为1075.67 mg/g.
吸附动力学遵循伪二阶模型,表明化学吸附是限制速度的步骤.
热力学分析表明金属离子的自发和内热吸附.

结论:

Na-Alg@CTs水凝珠是从废水中去除Cu (II) 和Zn (II) 的高效和高效吸附剂.
吸附剂的环保性质,低成本和特殊的容量使其成为水资源整治的有希望的材料.
这些发现支持从贝中获得的生物性碳酸用于开发先进的废水处理解决方案.

关键词:

塞拉纳·特拉莫斯克里卡 (Cellana Tramoscrica) 的贝是一种海.环保的高分子.重金属重金属的使用.水凝珠子水凝珠子

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