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用奇托桑稳定铁铜纳米粒子,以有效地去除酸盐

Xiaxia Yang¹, Wenhong Yang¹, Yingjie Chen¹

¹State Key Laboratory of Materials Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, No. 30 Puzhu South Road, Pukou District, Nanjing, 211816, People's Republic of China.

Environmental science and pollution research international

|August 17, 2023

概括

基托桑稳定铁铜纳米材料 (CS-nZVI/Cu) 有效地去除了97%以上的酸盐. 这些纳米材料为净化水提供了有前途的解决方案,利用吸附,氧化和还原机制.

科学领域:

环境科学环境科学
材料科学材料科学材料科学
纳米技术纳米技术

背景情况:

水中的酸盐污染对环境和健康构成重大风险.
开发高效,具有成本效益的酸盐去除材料对于水资源整治至关重要.

研究的目的:

为了合成和表征酸盐稳定铁铜纳米材料 (CS-nZVI/Cu) 用于酸盐去除.
研究CS-nZVI/Cu在酸盐整治中的效率和影响因素.

主要方法:

进行批量实验以优化诸如Cu负载,纳米材料剂量,初始酸盐度和pH等参数.
使用SEM,TEM,XRD,FT-IR和XPS分析进行材料表征.
分别使用一阶模型和朗慕尔模型进行动力学和异热学研究.

主要成果:

在最佳条件下,CS-nZVI/Cu的酸盐去除效率超过97% (5%的负载,3g/L剂量,30-120 mg/L酸盐,pH2-9).
亚酸盐去除遵循第一阶动力学和兰木尔模型,表明单层化学吸收.
基托桑稳定改善了分散,减少了铁的氧化 (形成Fe3O4),并通过连接体相互作用促进了固定.
XPS分析证实了nZVI和Cu的协同作用,Cu加速反应,nZVI将酸盐减少到N2.

结论:

CS-nZVI/Cu在从水中去除酸盐方面表现出高效率和稳定性.
该材料的特性,包括增强的分散和减少的氧化,有助于其有效性.
CS-nZVI/Cu为解决水生环境中酸盐污染问题提供了一种可行且有前途的纳米材料.

关键词:

吸附方式吸附方式吸附方式基托桑是一种酸盐.机理机制机理机制在纳米尺度上,零价值铁是零价值的.亚酸盐的去除亚酸盐的去除主要动力学的主要动力学.

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