Voltammetric Investigation on Uranyl Sorption by Alginate Based Material. Influence of Hydrolysis and pH Dependence

Daniela Piazzese; Salvatore Cataldo; Nicola Muratore

首页> 外文期刊>International Journal of Electrochemical Science >Voltammetric Investigation on Uranyl Sorption by Alginate Based Material. Influence of Hydrolysis and pH Dependence

【24h】

Voltammetric Investigation on Uranyl Sorption by Alginate Based Material. Influence of Hydrolysis and pH Dependence

机译：海藻酸盐基材料对铀酰的伏安研究。水解和pH依赖性的影响

获取原文

掌桥外文数据库（机构版） >>

开具论文收录证明 >>

文献代查 >>

页面导航

摘要
著录项
相似文献
相关主题

摘要

The removal of U(VI) as uranyl ( UO2 ) from aqueous solutions was investigated by sorption ontoalginate based material. The hydrolysis of uranyl ion was always taken into account in the calculationsof free UO2 ion in aqueous solution, in the experimental pH range considered, as well as the acid- base properties of alginate polymer. The sorption process follows a pseudo-second order kinetic modeland the sorption rate decreases when the pH value increases. In addition to the classical Langmuir andFreundlich models, the equilibrium data were fitted by using a modified multi-component equilibriummodel, never tested before. Differential Pulse Voltammetry (DPV) and Inductively Coupled PlasmaOptical Emission Spectroscopy (ICP-OES) measurements were carried out in NaNO3 aqueoussolutions for the kinetic and equilibrium studies, respectively. Direct measurements of uranyl by DPVwere carried out without using complexing agent, as usually reported in the literature; this allowed usto know the free UO2 concentration and the hydrolyzed species formed in the ~ 2.0 to 5.0 pH rangeinvestigated. The physical structure and morphology of biomaterials was investigated by ScanningElectron Microscopy (SEM) analysis and Energy Dispersive X-ray spectroscopy (EDX)measurements.

机译：通过吸附基于藻酸盐的材料，研究了从水溶液中去除作为铀酰（UO2）的U（VI）。在考虑的实验pH范围内，在计算水溶液中的游离UO2离子时，始终考虑到铀酰离子的水解以及藻酸盐聚合物的酸碱性质。吸附过程遵循伪二级动力学模型，pH值增加时，吸附速率降低。除了经典的Langmuir和Freundlich模型外，还使用以前从未测试过的改进的多组分平衡模型拟合了平衡数据。在NaNO3水溶液中分别进行了差分脉冲伏安法（DPV）和电感耦合等离子体发射光谱（ICP-OES）测量，以进行动力学和平衡研究。如文献中通常报道的那样，无需使用络合剂即可通过DPV直接测定铀酰。这使我们能够了解游离的UO2浓度以及在〜2.0至5.0 pH范围内形成的水解物质。通过扫描电子显微镜（SEM）分析和能量色散X射线光谱（EDX）测量研究了生物材料的物理结构和形态。

著录项

来源
《International Journal of Electrochemical Science》 |2015年第9期|共17页
作者
Daniela Piazzese; Salvatore Cataldo; Nicola Muratore;
展开▼
作者单位

展开▼
收录信息
原文格式 PDF
正文语种
中图分类化学;
关键词

相似文献

外文文献
中文文献
专利

1. Influence of sodium alginate and methylcellulose on hydrolysis and physicochemical properties of alpha-TCP based materials [J] . Czechowska Joanna, Zima Aneta, Siek Dominika, CERAMICS INTERNATIONAL . 2018,第6期

机译：藻酸钠和甲基纤维素对基于α-TCP材料水解和物理化学性质的影响
2. Influence of Additional Metal Ions on the Ratio of Conversion Rates of Intermediate Products of the Hydrolysis of Adenosine-5'-Triphosphoric Acid Catalyzed by the Cu~(2+) Ion: 1. Experimental Study of the Influence of Mg~(2+) Ions in the Ascending Branch of the Dependence of the Initial Hydrolysis Rate on pH [J] . E. Z. Utyanskaya, B. V. Lidskii Russian journal of physical chemistry, B. . 2012,第5期

机译：附加金属离子对Cu〜（2+）离子催化的5'-三磷酸腺苷水解中间产物转化率的影响：1. Mg〜（2+）影响的实验研究初始水解速率对pH值依赖性的上升分支中的离子
3. Synthesis and characterization of uranyl ion-imprinted microspheres based on amidoximated modified alginate [J] . Monier M., Abdel-Latif D. A., Mohammed Hassan A. International Journal of Biological Macromolecules: Structure, Function and Interactions . 2015,第Null期

机译：氨基氧化肟化修饰藻酸酯的铀酰离子印迹微球的合成与表征
4. MIXED SILICON-GRAPHITE COMPOSITES AS ANODE MATERIAL FOR LITHIUM ION BATTERIES. INFLUENCE OF THE GRAPHITE TYPE AND PREPRATAION CONDITIONS ON THE PROPERTIES OF THE MATERIAL. [C] . N. Dimovl, S. Kuginol, M. Yoshiol, Electrochemical Society . 2004

机译：混合硅 - 石墨复合材料作为锂离子电池的阳极材料。石墨型和预补充条件对材料性质的影响。
5. Investigating the influence of organic acids on uraninite solubility and uranyl sorption onto kaolinite. [D] . Barger, Michelle L. 2011

机译：研究有机酸对尿素的溶解度和铀酰在高岭石上的吸附的影响。
6. Periodic Density Functional Theory Investigation of the Uranyl Ion Sorption on Three Mineral Surfaces: A Comparative Study [O] . Jérôme Roques, Edouard Veilly, Eric Simoni 2009

机译：铀在三个矿物表面上吸附的周期性密度泛函理论研究：比较研究
7. Voltammetric Investigation on Uranyl Sorption by Alginate Based Material. Influence of Hydrolysis and pH Dependence [O] . Piazzese D., Cataldo S., Muratore N. 2015

机译：海藻酸盐基材料吸附铀的伏安法研究。水解和pH依赖性的影响
8. Comparison of Reactivity Based on Intercalation and Host Lattice Reconstruction. Two Routes for the Conversion of the Lamellar Solid Hydrogen Uranyl Phosphate to a Lamellar Hydrate of Uranyl Phosphate [R] . Rosenthal, G. L., Ellis, A. B. 1987

机译：基于插层和主机格重构的反应性比较。将层状固体氢铀基磷酸酯转化为磷酸铀酰层状水合物的两种途径

Voltammetric Investigation on Uranyl Sorption by Alginate Based Material. Influence of Hydrolysis and pH Dependence

摘要

著录项

相似文献

相关主题

期刊订阅