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从水溶液中有效吸附As(V) 由四等和Zn2+装饰的素基吸附剂

Baoping Zhang¹, Wencan Li¹, Jing Ke¹

¹The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, Hubei, China; Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081, Hubei, China; Hubei Provincial Key Laboratory for New Processes of Ironmaking and Steelmaking, Wuhan University of Science and Technology, Wuhan 430081, Hubei, China.

International journal of biological macromolecules

|February 3, 2024

概括

一种新型吸附剂,Zn2+/四元联,有效地从水中去除 (As(V)). 这种以素为基础的材料显示出高吸附能力和化学吸附机制,为污染提供了有希望的解决方案.

科学领域:

环境化学环境化学
材料科学材料科学材料科学
水处理处理水的方法

背景情况:

水中的污染对环境和健康构成重大风险.
生物质衍生聚合物宁具有作为可持续吸附材料的潜力.
用四级和金属离子对素的功能化可以增强其吸附能力.

研究的目的:

为了合成和表征一种新型吸附剂,Zn2+/四元联,用于去除.
为了研究合成的吸附剂的吸附性能和机制为As(V).
用开发的材料评估吸附的最佳条件.

主要方法:

通过四级化和金属化合成Zn2+/四级氨红素.
使用SEM-EDS,FTIR和XRD进行表征,以分析形态,功能组和组成.
批量吸附实验以确定pH值,初始As(V) 度,接触时间和吸附剂剂量的影响.
使用SEM-EDS,FTIR和XPS进行吸附机制探索.

主要成果:

合成的Zn2+/四元联宁表现出粗的形态,其中丰富的四元和Zn2+.
在最佳条件下,As(V的最大吸附能力为70.38 mg·g-1 (25°C,pH 5,100 mg·L-1初始As(V,30分钟接触时间,1g·L-1吸附剂).
吸附遵循兰迈尔和准二阶动态模型,表明单层化学吸附.
机制涉及Zn2+的静电吸引和与Cl-.的离子交换.

结论:

Zn2+/四元联是一种高效的吸附剂,可以从水溶液中去除As(V).
吸附过程主要由化学吸附驱动,涉及静电相互作用和离子交换.
这种以素为基础的吸附剂为污染水中的修复提供了可行和有效的解决方案.

关键词:

的吸附方式是的吸附方式.金属化金属化隔离四级是指隔离四级.Zn(2+) /四次性氨酸青素.

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