The separation of saturated fatty acids (as the methyl esters and as triacylglycerols) of differing chain lengths by silver ion chromatography (ChromSpher Lipids: containing silver ions: Chrompack, Middelburg, Netherlands) was studied, The retention characteristics (isocratic solvent system of acetonitrile in hexane) of saturated fatty acid methyl esters and homogeneous, saturated triacylglycer...

The recovery and immobilization of metals from wastewater often occurs in an acidic environment that destroys the structure adsorbents such as zeolites, which are porous crystalline aluminosilicates. influence hydrochloric acid solutions on properties two natural mixtures heulandite (HEU) chabazite (CHA)—tuff Georgian Dzegvi-Tedzami deposit (HEU/CHA ≈ 8) rock Kazakhstani Chankanay (HEU/CHA≈1)—w...

background aromatic organic solvents are extensively used in various industries. xylene is a colorless, transparent liquid, with the characteristic odor of the aromatic hydrocarbons family, which is widely used in industries. adsorption is a conventional method of purifying polluted air containing volatile organic compounds (vocs). zeolite has many unique properties such as high capacity, molec...

Formation of silver citrate/citric acid complexed solutions was investigated. Although, silver citrate is minimally soluble in water, it can successfully be dissolved in citric acid solutions. The maximum concentration of Ag(I) in solution is estimated at 23 to 25 g/L if the concentration of citric acid is at least 4 mol/L or higher. The dissolution of silver citrate in citric acid solutions wa...

Copper-exchanged faujasite (Cu-FAU) zeolites have been investigated in this work as promising adsorbent materials to further purify hydrogen produced via ammonia decomposition a membrane reactor. Samples prepared ion-exchange procedure using commercially available NaY, HY and 13X their performance was evaluated compared the one of parent zeolites. The introduction copper species framework demon...

The core-shell method is used as a novel synthetic process of micronized Ti-Zeolite Na-A which involves calcination at 700°C of coated Egyptian Kaolin with titanium tetrachloride in acidic medium as the first step. The produced Ti-coated metakaolinite is subjected to microwave irradiation at low temperature of 80°C for 2 h. The prepared micronized Ti-containing Zeolites-A (Ti-Z-A) is characteri...

Bacterial colonisation of wounds may delay wound healing. Modern silver-containing dressings are antimicrobial, yet cellular toxicity is a serious side-effect. We provide data for a newly formulated silver-containing ointment dressing, Atrauman Ag, for antimicrobial activity and cytotoxicity. Atrauman Ag effectively killed a panel of commensal skin as well as pathogenic bacterial strains while ...

The implant-bone interface is the scene of competition between microorganisms and distinct types of tissue cells. In the past, various strategies have been followed to support bony integration and to prevent bacterial implant-associated infections. In the present study we investigated the biological properties of diamond-like carbon (DLC) surfaces containing silver nanoparticles. DLC is a promi...