Solid-phase concentration of calcium ions with mineral sorbents in creation of anti-icing materials

IF 0.6 Q4 CHEMISTRY, MULTIDISCIPLINARY

Izvestiya Vysshikh Uchebnykh Zavedenii Khimiya i Khimicheskaya Tekhnologiya Pub Date : 2018-10-22 DOI:10.6060/IVKKT.20186109-10.5805A

L. A. Dzhigola, E. A. Syutova

{"title":"Solid-phase concentration of calcium ions with mineral sorbents in creation of anti-icing materials","authors":"L. A. Dzhigola, E. A. Syutova","doi":"10.6060/IVKKT.20186109-10.5805A","DOIUrl":null,"url":null,"abstract":"The results of an experimental study of calcium ion adsorption processes carried out on various mineral sorbents of natural origin are presented. The sorption properties of the selected objects were studied and the possibility of their use as combined anti-icing materials was evaluated. In the work were investigated technological indicators of the quality of sorbents - the pH of the zero-charge point, the sorption capacity of sorbents and the optimum pH interval to determine the sorption activity of mineral raw materials on calcium ion. Analysis of the adsorption isotherms of calcium ions by the mineral sorbents studied makes it possible to note that the adsorption equilibrium on the clay is established more rapidly than on the opal of the marl type and marl. At the same time, the maximum absorption capacity of clay and marl has close values, which is related to the structure of the sorbent surface and the mineral composition of the materials. Opal of the marl type has a more developed surface, which is illustrated by a much higher absorption capacity and is confirmed by the values of the specific surface area. The obtained experimental data were processed using Freundlich, Langmuir, Temkin, and Dubinin-Radushkevich models. When describing the adsorption equilibrium of calcium ions on mineral sorbents, the Freyndlich isotherm is a more rigorous model, which indicates the presence of a large number of active centers and their exponential distribution on the surface of sorbents. The quantitative characteristics of the adsorption capacity of sorbents, found by adsorption models, made it possible to identify the optimum conditions of processes, establish a relationship between the values of the sorption of calcium ions by their structure and the porosity of the materials. It has been established that opal of marl type is the most effective carrier for producing anti-icing materials. \nFor citation: \nDzhigola L.A., Syutova E.A. Solid-phase concentration of calcium ions with mineral sorbents in creation of anti-icing materials. Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol. 2018. V. 61. N 9-10. P. 98-104","PeriodicalId":45993,"journal":{"name":"Izvestiya Vysshikh Uchebnykh Zavedenii Khimiya i Khimicheskaya Tekhnologiya","volume":null,"pages":null},"PeriodicalIF":0.6000,"publicationDate":"2018-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Izvestiya Vysshikh Uchebnykh Zavedenii Khimiya i Khimicheskaya Tekhnologiya","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.6060/IVKKT.20186109-10.5805A","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 1

Abstract

The results of an experimental study of calcium ion adsorption processes carried out on various mineral sorbents of natural origin are presented. The sorption properties of the selected objects were studied and the possibility of their use as combined anti-icing materials was evaluated. In the work were investigated technological indicators of the quality of sorbents - the pH of the zero-charge point, the sorption capacity of sorbents and the optimum pH interval to determine the sorption activity of mineral raw materials on calcium ion. Analysis of the adsorption isotherms of calcium ions by the mineral sorbents studied makes it possible to note that the adsorption equilibrium on the clay is established more rapidly than on the opal of the marl type and marl. At the same time, the maximum absorption capacity of clay and marl has close values, which is related to the structure of the sorbent surface and the mineral composition of the materials. Opal of the marl type has a more developed surface, which is illustrated by a much higher absorption capacity and is confirmed by the values of the specific surface area. The obtained experimental data were processed using Freundlich, Langmuir, Temkin, and Dubinin-Radushkevich models. When describing the adsorption equilibrium of calcium ions on mineral sorbents, the Freyndlich isotherm is a more rigorous model, which indicates the presence of a large number of active centers and their exponential distribution on the surface of sorbents. The quantitative characteristics of the adsorption capacity of sorbents, found by adsorption models, made it possible to identify the optimum conditions of processes, establish a relationship between the values of the sorption of calcium ions by their structure and the porosity of the materials. It has been established that opal of marl type is the most effective carrier for producing anti-icing materials. For citation: Dzhigola L.A., Syutova E.A. Solid-phase concentration of calcium ions with mineral sorbents in creation of anti-icing materials. Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol. 2018. V. 61. N 9-10. P. 98-104

查看原文本刊更多论文

用矿物吸附剂制备防冰材料中钙离子的固相浓度

介绍了在各种天然矿物吸附剂上进行的钙离子吸附过程的实验研究结果。研究了所选物体的吸附性能，并评估了它们用作复合防冰材料的可能性。研究了吸附剂质量的技术指标——零电荷点的pH、吸附剂的吸附容量和最佳pH区间，以确定矿物原料对钙离子的吸附活性。通过分析所研究的矿物吸附剂对钙离子的吸附等温线，可以注意到粘土上的吸附平衡建立得比泥灰岩类型和泥灰岩的蛋白石更快。同时，粘土和泥灰岩的最大吸收能力值相近，这与吸附剂表面的结构和材料的矿物组成有关。泥灰岩类型的蛋白石具有更发达的表面，这通过更高的吸收能力来说明，并通过比表面积的值来证实。使用Freundlich、Langmuir、Temkin和Dubinin-Radushkevich模型对获得的实验数据进行处理。在描述钙离子在矿物吸附剂上的吸附平衡时，Freyndlich等温线是一个更严格的模型，它表明在吸附剂表面存在大量的活性中心及其指数分布。通过吸附模型发现的吸附剂吸附能力的定量特征，可以确定工艺的最佳条件，建立钙离子的结构吸附值与材料孔隙率之间的关系。据证实，泥灰岩型蛋白石是生产防冰材料最有效的载体。引用：Dzhigola L.A.，Syutova E.A.在防冰材料的制造中使用矿物吸附剂对钙离子进行固相浓缩。伊兹夫。维什。Uchebn。扎维德。Khim。Khim。Tekhnol。2018年第61条。N 9-10。第98-104页

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Izvestiya Vysshikh Uchebnykh Zavedenii Khimiya i Khimicheskaya Tekhnologiya CHEMISTRY, MULTIDISCIPLINARY-

CiteScore

1.40

自引率

44.40%

发文量