Magnesium ammonium phosphate (MAP) precipitation was introduced to remove ammonium nitrogen (NH4+-N) in autothermal thermophilic aerobic digestion (ATAD) in this study by addition of MgCl2·6H2O and NaH2PO4·2H2O. The results showed that the lowest NH4+-N concentration was found in the D2 digest...
Studies of how nitrogen (N) becomes available have tended to focus on depolymerisation of proteins and subsequent uptake of amino acids, yet amino acids and their polymers are not the only organic N compounds in soil. For example, concentrations of small quaternary ammonium compounds in the extr...
Magnetic susceptibility measurements have been performed on the ovide system of californium. Poly crystalline samples of Cf2O3 (cubic and monoclinic), Cf7O12, CfO2 and BaCfO3 have been studied at magnetic fields up to 50 kG and temperatures between 4.2 and 340 K. All the ovides evhibit Curie-Wei...
Californium dioxide was prepared by oxidation with high pressure molecular oxygen and by atomic oxygen. The CfO2 has a fcc structure with an expansion corrected lattice parameter of 5·310 ± 0·002 Å. Several areas of oxide stability in the range CfOχ(2·00 > χ > 1·50) are reported and these...
Single crystal samples of lead telluride doped with cerium were made using the Bridgman method. Far infrared reflectivity spectra in the temperature range from 10 to 300 K are presented. The experimental data were numerically analyzed using a fitting procedure based on the plasmon–phonon intera...
Density functional theory (DFT) simulations and experiments were performed to clarify the interaction mechanisms between hydroxamic acid collectors and cerium hydroxides during the flotation of bastnäsite and monazite minerals. These minerals showed considerable floatability at moderately alkali...
Although many of the nanoparticles containing lanthanoids are deeply investigated, the reports concerning chalcogenide materials are scarce. Comprehensive exploration of properties of these materials requires a proper preparation method avoiding hydrolysis and contamination with oxygen-containin...
X-ray fluorescence (XRF) analysis is useful for mapping various molecules in objects. Bremsstrahlung X-rays are selected using a 3.0-mm-thick aluminum filter, and these rays are absorbed by iodine, cerium, and gadolinium molecules in objects. Next, XRF is produced from the objects, and photons a...
Manganese cerium oxides were synthesized by Pechini method and were used for investigating the performance of solid solution and the influence of water vapor presence on catalytic decomposition of formaldehyde and ozone at room temperature. Compared with the pristine manganese oxides and cerium ...
An X-ray fluorescence computed tomography system (XRF-CT) is useful for determining the main atoms in objects. To detect iodine atoms without using a synchrotron, we developed an XRF-CT system utilizing a cadmium telluride (CdTe) detector and a cerium X-ray generator. CT is performed by repeated...
As many nations continue to develop and industrialize, the global energy demands are rising rapidly. With the threat of climate change disaster looming, the search for sustainable, “green” energy has become of higher priority. Thermoelectric materials add an important facet to the mosaic of fu...
The present paper reports the sonocatalytic activity of cerium-substituted-magnetite for removal of oxytetracycline (OTC). The catalyst was prepared through a chemical route (co-precipitation, Fe3-xCexO4) and a mechanical procedure (CeO2/Fe3O4). Subsequently, the physico-chemical characteristics...
This work presents an extensive study of one of the potential alternatives in electron transport material (ETM) for perovskite solar cell (PSC). Reduced cerium oxide (CeOx) as an electron transport layer (ETL) is studied for different composition of oxygen and analysis with [6,6]-phenyl-C61-buty...
Cerium sulfide (CexSy) polycrystalline thin film is coated with chemical bath deposition on substrates (commercial glass). Transmittance, absorption, optical band gap and refractive index are examined by using UV/VIS. Spectrum. The hexagonal form is observed in the structural properties in XRD. ...
In this study, we report transmission electron microscopy and electron energy loss spectroscopy study of cerium oxide thin layers deposited on silicon substrate. Transmission electron microscopy experiments have revealed the flat morphology of the deposited layers. In addition, studies of high r...
The interaction of hydrogen with the La15Ni8Si9H31, Ce15Ni9Si8H35 (Pr15Ni7Si10 type structure) and CeNi0.6Si1.4 (AlB2-type structure) has been studied. These compounds belong to the homologous Rn2+3n+2T2n2+2 (R=La, Ce; T=Ni, Si, n=2, 3, 4, ∞) series with the Ce6Ni2Si3, Ce2NiSi, Pr15Ni7Si10 and ...
The crystal structure of the new compound Ce3Pd5Si was investigated by X-ray single crystal diffraction method. The compound crystallizes in a new structure type, space group Imma Z=4, a=1.3027(4) nm, b=0.7377(4) nm, c=0.7580(4) nm.
The crystal structures of the new compounds Ce2Rh12Si7 and Ce6Rh30Si19, extracted from an ingot of composition Ce9.5Rh56.9Si33.6, were investigated by X-ray single crystal diffraction methods. The title compounds crystallize in the hexagonal space group P63/m with unit cell parameters a=9.706(1)...
The Ce-Ni-Si system has been investigated at 870/1070 K by X-ray and microprobe analyses. The existence of the known compounds, i.e.: Ce2Ni15.8Si1.2 (Th2Ni17-type), Ce2Ni15-14Si2-3 (Th2Zn17-type), CeNi8.6Si2.4 (BaCd11-type), CeNi8.8Si4.2 (LaCo9Si4-type), CeNi6Si6 (CeNi6Si6-type), CeNi5Si1-0.3 (T...
The new equiatomic silicides NbOsSi and TaOsSi as well as ZrOsSi, TIrSi (T = Zr, Hf, Nb, Ta) and TPtSi (T = Nb, Ta) were prepared from the elements by arc-melting. These silicides crystallize with the orthorhombic TiNiSi type structure, space group Pnma. Irregularly shaped crystals of ZrOsSi, Nb...
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