Vanadium containing sludge is a by-product of vanadium pentoxide obtained by hydrometallurgical methods from slag that can be estimated as promising technogeneous raw material for production. The phase analysis vanadium-containing the X-ray diffraction method showed it contains in spinel form (FeO∙V2O3). various oxidation roasting treatment were studied increasing extraction into solution. It m...

Density Functional Theory (DFT) is one of the most reliable and widespread methods for the study of structure and electronic properties of materials through computers. The theory is exact in principle but for practical purposes an approximation for the exchange-correlation energy a small but crucial part of the total energy must be used. The most widely used approximations go under the name of ...

Cobalt sulfate hydrate, gallium arsenide, molybdenum trioxide, vanadium pentoxide, and nickel sulfate heptahydrate were tested in the Syrian hamster embryo (SHE) assay in order to increase the SHE assay database for heavy metals. All five compounds produced significant morphological transformation at one or more doses in a dose-responsive manner. Cobalt sulfate hydrate, gallium arsenide, molybd...