CHEMICALLY MODIFIED CLAYS USED FOR ENVIRONMENTAL QUALITY

Adsorption of Thorium(IV) on Chemically Modified Amazon Clays

Amostras de caulinita e esmectita oriundas da região Amazônica, Brasil, foram modificadas com 2-mercaptobenzimidazol (MBI) usando rotas homogênea e heterogênea. As amostras de argilas modificadas (K HOM, S HOM , K HET e S HET ) foram caracterizadas por análise textural, MEV e espectroscopia C NMR. As argilas modificadas quimicamente apresentaram modificações em suas propriedades físico-químicas...

Quality of chemically modified hemp fibers.

Hemp fibers are very interesting natural material for textile and technical applications now. Applying hemp fibers to the apparel sector requires improved quality fibers. In this paper, hemp fibers were modified with sodium hydroxide solutions (5% and 18% w/v), at room and boiling temperature, for different periods of time, and both under tension and slack, in order to partially extract noncell...

Chemically modified tetracyclines pdf

Sepsis was induced by cecal ligation.Chemically modified tetracyclines CMTs are derivatives of tetracycline group of drugs which lack antimicrobial action but have potent host modulating affects.Chemically Modified Tetracyclines: An Emerging Host Modulatory Therapy. 1Sonakshi Gupta and 2 Vidya Dodwad. 1Postgraduate student III Yr, Department.of chemically modified tetracyclines CMTs on the prod...

Chemically modified activated carbon with ethylenediamine for

Carbon active chemically bonded ethylenediamine as one sorbents successfully were applied for the enrichment of trace amount of some metal ions. The influences of the variables including pH, amount of solid phase, sample flow rate, type and condition of eluting solution and sample volume on the metal ions recoveries were investigated. The method has high sorption-preconcentration efficiency eve...

Chemically Modified Electrodes for Detection of Pesticides