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Efficient separation, adsorption, and recovery of Samarium(III) ions using novel ligand-based composite adsorbent

吸附 材料科学 介孔材料 选择性 朗缪尔吸附模型 介孔二氧化硅 氢氧化铵 选择性吸附 单层 离子 洗脱 无机化学 镧系元素 氢氧化物 化学 色谱法 催化作用 有机化学 纳米技术
作者
Adiba Islam Rasee,Mrs Eti Awual,Ariyan Islam Rehan,Mohammed Sohrab Hossain,R.M. Waliullah,Khadiza Tul Kubra,Md. Chanmiya Sheikh,Md. Shad Salman,Md. Nazmul Hasan,Md. Munjur Hasan,Hadi M. Marwani,M. Saïful Islam,Md. Abdul Khaleque,Md. Rabiul Awual
出处
期刊:Surfaces and Interfaces [Elsevier BV]
卷期号:41: 103276-103276 被引量:179
标识
DOI:10.1016/j.surfin.2023.103276
摘要

The novel organic compound of ammonium (4-chlro-2-mercaptophenyl)carbamodithioate (ACMPC) was prepared and then subsequently grafted onto the mesoporous silica by direct approach for the preparation of composite adsorbent (CPA). The lanthanide (Ln(III)) intra-series separation behavior was measured using CPA and then the samarium (Sm(III)) ion was selected according to the high adsorption ability by CPA for effective separation, adsorption, and recovery in the solid-liquid approach. The mesoporous silica and CPA were characterized systematically for the evaluation of affecting experimental criterion. The solution acidity played an important factor as the alkaline pH area was avoided due to the hydroxide precipitation probability and pH 5.0 was selected for selective and effective Sm(III) ion separation and recovery. The data clarified that CPA exhibited high kinetic performances with high adsorption ability. The Sm(III) adsorption was highly fitted with the Langmuir adsorption isotherm model with monolayer coverage and the maximum adsorption capacity was determined as 155.13 mg/g. In addition, the diverse foreign ions were not reduced the Sm(III) ion adsorption significantly, and the CPA has approximately no adsorption capacity for other ions at this pH. The Sm(III) ion was strongly coordinated with the ACMPC and the expected highly stable complexation mechanism with the soft donor of N- and S- atoms. The elution of Sm(III) ions from the saturated CPA was desorbed successfully with 0.30 M HNO3. The regenerated CPA that remained maintained the high selectivity to Sm(III) ions and exhibited almost the same adsorption capacity as that of the original CPA. Therefore, the proposed CPA offered a cost-effective material and may be considered a viable alternative for effectively Sm(III) ion separation and recovery from waste samples as potential materials.
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