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在水中提升化物去除与Fe-Ce-Cu三元氧化物纳米粒子

Ying Liu¹, Leyi Li¹, Xuemei Huang¹

¹College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China.

Environmental science and pollution research international

|August 8, 2023

概括

一种新的基于铁的三元氧化物纳米粒子 (FCCTO) 有效地从水中去除有害的化物 (As (III)). 这种吸附剂还可以将As (III) 氧化为不那么有毒的酸盐 (As (V),显示出高容量和可回收性.

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:

化物 (As (III)) 对健康构成重大风险,并且很难从水中去除.
现有的化物清除方法经常面临效率和成本效益方面的挑战.

研究的目的:

开发一种新的三元氧化物纳米粒子 (FCCTO) 来提高从水中去除酸盐.
研究FCCTO的吸附机制,效率和影响因素,以消除As (III).

主要方法:

铁基三元氧化物纳米粒子 (FCCTO) 与和铜合的联合沉-化合成.
描述FCCTO的表面积,孔隙结构和化学成分.
批量吸附实验,以评估在不同条件下 (pH,温度,吸附剂剂量,共存离子) 的As (III) 去除效率.
在FCCTO结构中,通过Ce和Cu将As (III) 氧化为As (V).

主要成果:

FCCTO的表面积很大 (180.2 m2/g) 并且具有增强的孔隙特性.
吸附过程是内热和自发的,表面基团提供了丰富的吸附点.
和铜有效氧化了81.3%的 (III) 到 (V).
由于协同氧化和吸附,最大的As (III) 吸附能力达到101.5 mg/g.
在五个循环后,FCCTO保持了60%的去除效率,由于四价消耗而导致产能损失.

结论:

FCCTO是一种高效且可回收的吸附剂,用于从水中去除化物.
氧化和吸附的协同效应显著提高了As (III) 的去除能力.
由于其易于制造和环保,FCCTO为化物污染提供了一个有前途的解决方案.

关键词:

吸附方式吸附方式吸附方式亚石是一种亚石.铁-铁-铜三元氧化物机理机制机理机制氧化过程中的氧化.

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