TODOR MISHONOV, STEFAN-LUDWIG DRECHSLER and EVGENI PENEV † Laboratorium voor Vaste-Stoffysica en Magnetisme, Katholieke Universiteit Leuven Celestijnenlaan 200 D, B-3001 Leuven, Belgium Department of Theoretical Physics, Faculty of Physics, Sofia University “St. Kliment Ohridski” 5 J. Bourchier Blvd., 1164 Sofia, Bulgaria Institut für Festkörperund Werkstofforshung Dresden, D-001171 Dresden, Ge...

The separation of dissolved gas including dissolved oxygen can be used in breathing for a human under water. When one is suddenly wrecked or meets a tsunami, one is instantly drowned and cannot breathe under water. To avoid this crisis, when we meet waves, the dissolved gas separated from water by wave is used, while air can be used to breathe when we are about to escape from water. In this the...

Sparingly soluble Ion—association compounds Thrmed between multicharged anionic complexes ( formed from trace amounts of an element to be preconoentrated and determined) and hydrophobic basic dyes, accumulate at the phase boundary after shaking with a solvent of low polarity, This type of flotation (without surfactant and gas bubbling) depends on the acidity, the dyestuff and the flotation agen...

Application of Granular Activated Carbon (GAC) in adsorption process has been studied for the advanced treatment of municipal and industrial wastewater. Because of entering poisonous compounds such as furfural, phenol and sulfides into the oily wastewater of Tehran refinery, biological aeration basins of wastewater treatment unit may not have the desired performance of COD reductio...

In order to effectively eliminate the effect of fine carbonate minerals on quartz flotation, influence siderite flotation was studied as well mechanism or role ultrasonic treatment in process. The results adsorption capacity measurement and solution chemical calculation show that its dissolved components have a great collector consumption surface properties quartz. addition, SEM, EDS XPS analys...

The grinding process plays a crucial role in the floatability of mineral. present study proposes scheme to assist flotation separation galena and pyrite by optimizing choice media. effects media (cast iron balls, steel balls containing 18% chromium, 12% chromium) on pulp properties hydrophilicity were evaluated using tests, micro-flotation X-ray photoelectron spectroscopy, adsorption capacity a...

Rare earth minerals (REMs) contain rare elements (REEs) that are important in modern technologies due to their unique magnetic, phosphorescent, and catalytic properties. However, REMs not only non-renewable resources but also non-uniformly distributed on the Earth’s crust, so processing of REE-bearing secondary via recycling is one potential route ensure long-term sustainability REE supply. Flo...

The formation of an excess of dissolved gas (“excess air”) in quasi-saturated media was studied by analyzing and interpreting dissolved noble gas concentrations in laboratory column experiments. Using quartz sand filled columns of 1 m length, two different experimental designs were realized. In the first, groundwater recharge was simulated by a unidirectional vertical water flow through the col...

c 5 Abstract In Part I of this series of papers, it was shown that a definite amount of air had to be present in a laboratory mixing unit which produced a moderate shear rate in order to form compact, spherical agglomerates in an aqueous suspension of moderately hydrophobic coal using heptane or hexadecane as an agglomerant. In this paper, the effects of different amounts of air including disso...

The mixed cationic collector cetyltrimethylammonium chloride (CTAC) and nonionic collector octanol (OCT) was found to exhibit a synergistic effect on the flotation and adsorption of muscovite. To understand the underlying synergistic mechanism, flotation, contact angle, surface tension, and adsorption measurements were carried out. The results obtained from flotation measurements indicated that...