Kinetic Studies of Zn(II) Removal from Single and Binary Solutions by Synthetic Hydroxyapatite - Based Nanopowders

LAURENTIU TEODOR BUSUIOC; CLAUDIA MARIA SIMONESCU; GHEORGHE NECHIFOR

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Kinetic Studies of Zn(II) Removal from Single and Binary Solutions by Synthetic Hydroxyapatite - Based Nanopowders

机译：基于合成羟基磷灰石的纳米粉粉从单一和二元溶液中除去Zn（II）的动力学研究

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A kinetic study has been carried out with two hydroxyapatite nanopowders to establish the mechanism involved in heavy metals removal from aqueous synthetic solutions. The samples of nanohydroxyapatite have been previously characterized. The first sample represents a pure hydroxyapatite (HAP) nanopowder named HAP-1, and the second sample (HAP-2) consist of a mixture of hydroxyapatite (HAP; Ca_(10) (PO4 )6 (OH)2 ) and β-tricalcium phosphate (β-TCP; Ca3 (PO4 )2 ). Batch experiments with single and binary Zn(II) and Pb(II) aqueous solutions have been performed. According to this research study, it was found that the both nanohydroxyapatite samples show good heavy metals adsorption capacity, and selectivity for Pb(II) ions. A more pronounced decreasing of sorption capacity of Zn(II) ions from binary solutions compared to that registered from single heavy metal ion solutions has been observed. From the kinetic point of view, the sorption process can be described for both heavy metals as a pseudo-second-order kinetic process. According to this model, the Zn(II) and Pb(II) sorption can be achieved by chemical reactions between heavy metals and functional groups of adsorbents. The obtained results are indicative of good hydroxyapatite adsorption ability towards Pb(II) and Zn(II) ions.

机译：用两个羟基磷灰石纳米粉粉进行动力学研究，以建立从合成溶液中取出的重金属的机制。先前已经表征了纳米羟基磷灰石的样品。第一样品代表名为HAP-1的纯羟基磷灰石（HAP）纳米粉末，第二样品（HAP-2）由羟基磷灰石（HAP; CA_（10）（PO4）6（OH）2）和β-的混合物组成。磷酸三钙（β-TCP; CA3（PO4）2）。已经进行了用单和二进制Zn（II）和Pb（II）水溶液的分批实验。根据该研究的研究，发现两个纳米羟基磷灰石样品都显示出良好的重金属吸附能力，以及Pb（II）离子的选择性。已经观察到与二元溶液中的Zn（II）离子的吸附能力的吸附容量的降低更明显的降低与来自单重金属离子溶液的登记相比。从动力学的角度来看，可以将重质金属作为伪二阶动力学过程描述吸附过程。根据该模型，Zn（II）和Pb（II）吸附可以通过重金属和吸附剂的官能团之间的化学反应来实现。所得结果表示良好的羟基磷灰石吸附能力朝向Pb（II）和Zn（II）离子。

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来源
《Revista de Chimie》 |2018年第6期|共5页
作者
LAURENTIU TEODOR BUSUIOC; CLAUDIA MARIA SIMONESCU; GHEORGHE NECHIFOR;
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University Politehnica of Bucharest Faculty of Applied Chemistry and Materials Science 1-7 Polizu Street 011061 Bucharest Romania;

University Politehnica of Bucharest Faculty of Applied Chemistry and Materials Science 1-7 Polizu Street 011061 Bucharest Romania;

University Politehnica of Bucharest Faculty of Applied Chemistry and Materials Science 1-7 Polizu Street 011061 Bucharest Romania;

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正文语种 eng
中图分类化学;
关键词
synthetic nanohydroxyapatite; sorption capacity; lead and zinc removal; kinetic studies; kinetic sorption models;

机译：合成纳米羟基磷灰石;吸附能力;铅和锌去除;动力学研究;动力学吸附模型;

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1. Kinetic Studies of Zn(II) Removal from Single and Binary Solutions by Synthetic Hydroxyapatite - Based Nanopowders [J] . LAURENTIU TEODOR BUSUIOC, CLAUDIA MARIA SIMONESCU, GHEORGHE NECHIFOR Revista de Chimie . 2018,第6期

机译：基于合成羟基磷灰石的纳米粉粉从单一和二元溶液中除去Zn（II）的动力学研究
2. The Influence of Synthesis Conditions on Hydroxyapatite Adsorption Characteristics in the Process of Zn(II) and Pb(II) Removal from Single and Binary Soltions [J] . RODICA ELENA PATESCU, CLAUDIA MARIA SIMONESCU, GHEORGHE NECHIFOR Revista de Chimie . 2018,第4期

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3. Single metal isotherm study of the ion exchange removal of Cu(II), Fe(II), Pb (II) and Zn(II) from synthetic acetic acid leachate [J] . Bezzina James P., Robshaw Thomas, Dawson Robert, Chemical engineering journal . 2020,第1期

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4. Adsorption of Phenol from Aqueous Solution by Hydroxyapatite Nanopowders. Part II: Kinetic, Equilibrium and Thermodynamic Studies [C] . Kaili Lin, Jiayong Pan, Yiwei Chen, The 2nd International Conference on Bioinformatics and Biomedical Engineering(iCBBE 2008)(第二届生物信息与生物医学工程国际会议）论文集 . 2008

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机译：使用羟基磷灰石去除单一和二元系统中重金属的动力学和平衡研究

Kinetic Studies of Zn(II) Removal from Single and Binary Solutions by Synthetic Hydroxyapatite - Based Nanopowders

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