Preparation of magnesium carbonate hydroxide microsheets modified activated carbon fiber and its adsorption of heavy metals

IF 2.2 4区 化学 Q3 CHEMISTRY, MULTIDISCIPLINARY Journal of the Iranian Chemical Society Pub Date : 2024-08-17 DOI:10.1007/s13738-024-03036-4
Zhen Jin, Yi-Fan Xiao, Min-Da Xu, De-Cai Wang, Qian-Xi Li, Chen-Xin Ding, Shu-Hao Zhou, Yu-Ming Su
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Abstract

Heavy metal pollution has become an increasingly prominent problem. Consequently, adsorbents with high heavy metal removal efficiency using a convenient synthesis method have to be developed urgently. The magnesium carbonate hydroxide microsheets modified activated carbon fiber (MCH@ACF) was prepared by a facile in situ hydrothermal method. The results of the characteristic of MCH@ACF indicated that a large amount of magnesium carbonate hydroxide porous microsheets is densely arranged on the surface of ACF. The Mn2+, Cu2+, Pb2+, and Cr2O72− ions adsorption kinetics of the MCH@ACF could be fitted with the pseudo-second-order model, and the results indicate the fast adsorption rate. The Mn2+, Cu2+, and Pb2+ ions adsorption on the MCH@ACF follow the Langmuir model, while the Cr2O72− adsorption on the MCH@ACF follows the Freundlich model. The theoretical adsorption capacity of the Mn2+, Cu2+, Pb2+, and Cr2O72− ions on the MCH@ACF is 558.6 mg/g, 1591.7 mg/g, 1802.8 mg/g, and 125.7 mg/g, respectively. The heavy metal ions removal performance of MCH@ACF under different pH conditions has been studied. Furthermore, the adsorption mechanism could be ascribed to the binding of heavy metal ions with carbonate or hydroxyl group. The results indicated that the MCH@ACF can be used as the potential suitable candidate for heavy metal removal.

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碳酸镁氢氧化物微片改性活性炭纤维的制备及其对重金属的吸附作用
重金属污染已成为一个日益突出的问题。因此,利用简便的合成方法开发具有高重金属去除效率的吸附剂迫在眉睫。本研究采用简便的原位水热法制备了碳酸镁氢氧化物微片改性活性炭纤维(MCH@ACF)。MCH@ACF的特性结果表明,大量的碳酸镁氢氧化物多孔微片密集地排列在ACF表面。MCH@ACF对Mn2+、Cu2+、Pb2+和Cr2O72-离子的吸附动力学用假秒阶模型拟合,结果表明吸附速率较快。Mn2+、Cu2+和Pb2+离子在MCH@ACF上的吸附遵循Langmuir模型,而Cr2O72-在MCH@ACF上的吸附遵循Freundlich模型。Mn2+、Cu2+、Pb2+ 和 Cr2O72- 在 MCH@ACF 上的理论吸附容量分别为 558.6 mg/g、1591.7 mg/g、1802.8 mg/g 和 125.7 mg/g。研究了 MCH@ACF 在不同 pH 值条件下的重金属离子去除性能。此外,其吸附机理可归结为重金属离子与碳酸盐或羟基的结合。结果表明,MCH@ACF 可作为去除重金属的潜在合适候选材料。
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来源期刊
CiteScore
4.40
自引率
8.30%
发文量
230
审稿时长
5.6 months
期刊介绍: JICS is an international journal covering general fields of chemistry. JICS welcomes high quality original papers in English dealing with experimental, theoretical and applied research related to all branches of chemistry. These include the fields of analytical, inorganic, organic and physical chemistry as well as the chemical biology area. Review articles discussing specific areas of chemistry of current chemical or biological importance are also published. JICS ensures visibility of your research results to a worldwide audience in science. You are kindly invited to submit your manuscript to the Editor-in-Chief or Regional Editor. All contributions in the form of original papers or short communications will be peer reviewed and published free of charge after acceptance.
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