Efficient Sorption of Perfluoroalkyl Acids by Ionic Liquid-Modified Natural Clay

Application of Modified Clay for Sorption of Radionuclide Elements

The clay materials are distinguished on the basis of their different crystal structures. Due to their specific structure, they are applied in the nuclear industry for the removal of radionuclides from nuclear liquid waste as ion exchange material. This mini review presents some of the recent advances of various kinds of clay materials in this aspect. These inorganic materials continue to gain a...

The study of an azo dye removal from liquid medium by modified clay

In this batch study, montmorillonite was modified by a cationic surfactant [hexadecyltrimethylammonium bromide (HDTMA-MMT)] and used as sorbent to remove bromocresol green (BCG) from aqueous solutions. The effect of several factors such as surfactant loading rate onto the clay, contact time, pH, adsorbent dosage, dye concentration, and ion strength were investigated on the sorption. The equilib...

Sorption of trivalent actinides on smectite rich natural clay

Direct Electrochemistry of Hemoglobin Immobilized in Polyvinylalcohol and Clay Composite Film Modified Carbon Ionic Liquid Electrode

Neste trabalho, líquido iônico hexaflúor-fosfato de 1-butil-3-metilimidazólio (BMIMPF6), em temperatura ambiente, foi usado como ligante na fabricação de um eletrodo líquido iônico de carbono (CILE). Hemoglobina (Hb) foi imobilizada na superfície de CILE com argila e um filme composto por polivinil álcool (PVA) pelo método camada por camada. Espectros de UV-Vis e FT-IR mostraram que Hb no filme...

Speciation of neptunium during sorption and diffusion in natural clay

In argillaceous rocks, which are considered as a potential host rock for nuclear waste repositories, sorption and diffusion processes govern the migration behaviour of actinides like neptunium. For the safety analysis of such a repository, a molecular-level understanding of the transport and retardation phenomena of radioactive contaminants in the host rock is mandatory. The speciation of Np du...