vestichИзвестия Национальной академии наук Беларуси. Серия химических наукProceedings of the National Academy of Sciences of Belarus, Chemical Series1561-83312524-2342The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"vestich-238Research ArticleКОЛЛОИДНАЯ ХИМИЯCOLLOIDAL CHEMISTRYВЛИЯНИЕ СОСТАВА АЛЮМИНИЙСОДЕРЖАЩИХ КОАГУЛЯНТОВ НА КОЛОИДНО -ХИМИЧЕСКИЕ ХАРАКТЕРИСТИКИINFLUENCE OF ALUMIN IUM COAGULANTS COMPOSITION ON COLOIDAL CHARACTERISTICS OF KAOLIN DISPERSIONSЗыгмантА. В.ZyhmantA. V.

мл. науч. сотрудник

Research Assistant.

alesiazyhmant@gmail.comСавицкаяТ. А.SavitskayaT. A.

канд. хим. наук., профессор, вед. науч. сотрудник

Ph. D. (Chemistry), Professor

SavitskayaTA@bsu.byЦыганковаН. Г.TsygankovaN. G.

канд. хим. наук, вед. науч. сотрудник

Ph. D. (Chemistry), Leading Researcher

ng-tsyg@mail.ruГриншпанД. Д.HrynshpanD. D.

д-р хим. наук, профессор, зав. лаб. растворов целлюлозы и продуктов ихпереработки

D. Sc. (Chemistry), Professor

grinshpan@bsu.byУчреждение Белорусского государственного университета «НИИ физико-химических проблем»Research Institute for Physical Chemical Problems of the Belarusian State University201706032017014956Copyright © Зыгмант А.В., Савицкая Т.А., Цыганкова Н.Г., Гриншпан Д.Д., 20172017Зыгмант А.В., Савицкая Т.А., Цыганкова Н.Г., Гриншпан Д.Д.Zyhmant A.V., Savitskaya T.A., Tsygankova N.G., Hrynshpan D.D.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://vestichem.belnauka.by/jour/article/view/238

С помощью метода лазерной дифракции проведено исследование влияния состава алюминийсодержащих коагулянтов на коллоидно-химические характеристики дисперсий каолина: средний диаметр частиц, распределение частиц по размерам, плотность коагуляцонных агрегатов, скорость седиментации. Показано, что форма и структуракоагуляционных агрегатов может быть охарактеризована путем сопоставления экспериментально определенных величин их фрактальной размерности и данных компьютерного моделирования. Установлено, что при использовании сульфата алюминия размер коагуляционных агрегатов увеличивается, а их плотность уменьшается при переходе от дисперсий чистого гидроксида алюминия к дисперсиям его агрегатов с каолином. В случае применения в качестве коагулянта хлорида пентагидроксодиалюминия наблюдается обратная зависимость.

The effect of aluminium coagulants’ composition on colloidal characteristics of kaolin dispersions (diameter, particle size distribution, density and sedimentation rate of aggregates) has been investigated by the laser diffraction method. Shape and structure of aggregates have been characterized by comparing the experimentally determined fractal dimension values and computer simulation data. When aluminium sulphate was used as a coagulant, the size of aggregates has been found to increase, while their density decreased, for dispersions of mixed aluminium hydroxide aggregates with kaolin, as compared to pure aluminum hydroxide dispersions. In the case of  pentahydroxydialuminium chloride, the reverse relationships have  been observed.

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The authors declare that there are no conflicts of interest present.