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Preparation and use of humic coatings covalently bound to silica gel for Np(V) and Pu(V) sequestrationстатья
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 июля 2013 г.
- Авторы: Perminova I.V., Karpiouk L.A., Shcherbina N.S., Ponomarenko S.A., Kalmykov S.N., Hatfield K.
- Журнал: Journal of Alloys and Compounds
- Том: 444
- Номер: SPEC. ISS.
- Год издания: 2007
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Первая страница: 512
- Последняя страница: 517
- DOI: 10.1016/j.jallcom.2007.01.089
- Аннотация: Alkoxysilylated humic derivatives were used to create covalently bound humic coatings on silica gel. The corresponding reaction was conducted in an aqueous milieu that was feasible due to the water solubility of these derivatives. The alkoxysilylated humic derivatives were obtained by alkoxysilylation of leonardite humic acid (HA) and hydroquinone-modified HA (HQ) with enhanced redox properties. The silica gel coated with covalently bound HA and HQ was tested for sequestration of aqueous Np(V) and Pu(V) under anaerobic conditions. Greater sequestration with respect to Pu(V) (up to 97%) as compared to Np(V) (up to 60%) was demonstrated for samples of silica gel coated with HA and HQ, whereas sorption of both actinides on pure silica gel did not exceed 20%. Results provide bench-scale proof that alkoxysilylated humic derivatives can be used as reagents for the in situ installation of permeable reactive barriers designed to remediate actinide-contaminated groundwater. © 2007 Elsevier B.V. All rights reserved.
- Добавил в систему: Калмыков Степан Николаевич