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使用氧化-铁纳米复合物吸附剂从水溶液中去除化物

Georgiana Mladin¹, Mihaela Ciopec¹, Adina Negrea¹

¹Faculty of Industrial Chemistry, Environmental Engineering, Polytechnic University of Timişoara, Victoriei Square no. 2, 300006 Timişoara, Romania.

Gels (Basel, Switzerland)

|June 27, 2023

概括

一种新的纳米复合物吸附剂,使用sol-gel方法合成,有效地从水中去除有毒的化离子. 这种材料显示出对污染环境修复的希望.

科学领域:

环境科学环境科学
材料科学材料科学材料科学
化学化学化学

背景情况:

工业发展导致有毒金属离子,包括 (Se) 排放到水体中.
是一种必不可少的微量营养素,但在较高度下是有毒的,存在于酸盐和酸盐.
关于有效的从水溶液中去除的方法的研究有限.

研究的目的:

通过sol-gel方法合成一种新的纳米复合材料吸附材料,用于化物去除.
为了描述合成的吸附材料 (SiO2 / Fe3 / NaF).
为了研究化机制,动力学,热力学和化物对吸附剂的平衡.

主要方法:

一种纳米复合物吸附剂的sol-gel合成,由化,氧化和氧化铁组成.
使用扫描电子显微镜 (SEM) 和能量分散式X射线光谱 (EDX) 进行表征.
吸附研究包括动力学,热力学和平衡分析.

主要成果:

合成的纳米复合材料吸附剂的特征是SEM和EDX.
伪二阶动力学最好地描述了吸附过程.
西普斯异热量最适合平衡数据,最大吸附能力为6.00毫克Se (IV) /g.
热力学研究表明自发和物理吸附过程.

结论:

开发的SiO2 / Fe3 / NaF纳米复合材料是从水溶液中去除化物的有效吸附剂.
吸附过程由伪二次动力学控制,并由Sips异热法描述.
吸附过程的物理性质,由热力学参数证实,表明再生和再利用的潜力.

关键词:

吸附吸附是一种吸附.铁氧化物铁氧化物这是一个纳米复合材料.化物去除化物去除石英矩阵是二氧化的矩阵.sol

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