The article presents the results of a study processes obtaining magnesium oxide by fusing serpentinites Arvaten deposit in presence ammonium sulfate, followed grinding and treatment with water to separate silica from suspension, neutralizing filtrate ammonia pH 8.5 for precipitation separation impurity metal ions, ions solution using carbonate, thermal decomposition corbanate obtain oxide. It h...

AgAl2O3 nanocomposite were synthesized by solution combustion Technique using ammonium carbonate as a new fuel under simultaneous combustion of alumina and silver particles condition. Samples prepared with different amount of silver, were characterized by XRD, BET, SEM and optical Absorption measurements. XRD analysis was used to determine the change in phase and size of the synthesized n...

Fuel oil used in power plants contain metal impurities like Vanadium. After combustion, this metal remains in boiler fuel ash in the form of oxide. In this research, extraction of Vanadium oxide from fuel ash has been investigated. Two processes were used for this purpose. A pyro- hydrometallurgy and a hydrometallurgy process. In the pyro-hydrometallurgy process, using sodium carbonate, salt ro...

A lipase producing bacterium, Bacillus cereus MSU AS was isolated from the gut of a marine fish Sardinella longiceps. In total, seven agricultural waste substrates (coconut oil cake, neem oil cake, onion skin waste, wheat bran, jack fruit waste, banana skin peels and pomegranate skin peel) were selected for solid state production of lipase by B. cereus MSU AS. Among the tested substrates, onion...

Microbially induced carbonate precipitation (MICP), an emerging technology for soil improvement, also may be used to sequester (biomineralize) radionuclides and metal contaminants (e.g., 90 Sr 2+ , Cd 2+ ) in groundwater, a significant problem at some U.S. Department of Energy sites. Previous work using the bacterium Bacillus pasteurii suggests that in-situ sequestration of these contaminants c...

We evaluated the use of ion-exclusion chromatographic systems for analyzing the behavior of inorganic ions (e.g., bicarbonate, sulfate, chloride, nitrate, phosphate, dissolved silicate, sodium, ammonium, potassium, magnesium, and calcium ions) in a suburban river located in Jakarta, Indonesia. Carbonate, phosphate, and silicate ion concentrations were determined using ion-exclusion chromatograp...

Nano-assisted inclusion separation of alkali metals from basic solutions was reported by inclusion-facilitated emulsion liquid membrane process. The novelty of this study is application of nano-baskets of calixcrown in the selective and efficient separation of alkali metals as both the carrier and the surfactant. For this aim, four derivatives of diacid calix[4]-1,2-crowns were synthesized, and...

The synthesis of pure and well dispersed lutetium aluminum garnet (LuAG) powder is crucial and important for the preparation of LuAG transparent ceramics. In this paper, high purity and well dispersed LuAG powders have been synthesized via co-precipitation method with lutetium nitrate and aluminum nitrate as raw materials. Ammonium hydrogen carbonate (AHC) was used as the precipitant. The influ...

A smpile, rapid and accurate method for the determination of main mono and divalent inorganic anions in Roselle (Hibiscus sabdariffa L.) has been developed. The quantitative determination of anions F-, Cl-, NO2, Br ,NO3, HPO 24,SO 24, and I was accomplished by suppressed conductimetric ion chromatography (IC). The separation is achieved on shim-pack IC-SA2 250 mmL X 4.0 mm ID Peak. column opera...

An overview of the acrylamide content in commercial biscuits and bread derivatives (bread sticks, bread crust, crackers) marketed in Spain is presented. Acrylamide was determined by stable isotope dilution LC-MS with an LOQ of 30 microg kg(-1). Acrylamide content ranged from <LOQ-2085, <LOQ-151, <LOQ-296 and <LOQ-323 microg kg(-1) for biscuits, crisp bread, crackers and bread sticks, respective...