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Nature-like solution for removal of Direct Brown 1 azo dye from aqueous phase using humics-modified silica gelстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 марта 2016 г.
- Авторы: Volikov A.B., Ponomarenko S.A., Konstantinov A.I., Hatfield K., Perminova I.V.
- Журнал: Chemosphere
- Том: 145
- Год издания: 2016
- Издательство: Pergamon Press Ltd.
- Местоположение издательства: United Kingdom
- Первая страница: 83
- Последняя страница: 88
- DOI: 10.1016/j.chemosphere.2015.11.070
- Аннотация: The objective was to estimate suitability of humics-modified silica gels for adsorptive removal of the Direct Brown 1 trisazo dye from aqueous phase. The major advantage of the proposed adsorbents is that of an ecologically sound procedure of immobilizing silanized humic derivatives onto silica gel in aquatic solutions. The silanized humic derivatives, in turn, are obtained without a use of organic solvent by reacting natural humic materials from peat and coal with 3-aminopropyltriethoxyorganosilane in water. These silanized derivatives are surface active and are capable of self assembling into humic adlayers at the water solid interface. A use of this approach allows for immobilization of up to 220 mg of humic materials per 1 g of SiO2. The adsorption capacity of humics-modified silica gels with respect to the Direct Brown 1 trisazo dye varied from 3.5 up to 8.8 mg per 1 g of SiO2. The maximum sorption obtained for the silanized derivative with 50% modification degree was comparable to adsorption capacity of activated coal to this dye (7.5 mg∙g-1). The results of this adsorption study, warrant further studies of azo dye removal from aqueous environments.
- Добавил в систему: Перминова Ирина Васильевна