A rapid and complete destruction of organics in the supercritical water oxidation (SCWO) of the Co-exchanged resin was found experimentally. Due to an extremely low solubility of CoSO4 salt formed and separated effectively in the SCWO process, a minimal release of the nuclide Co would be warranted. In addition, recycling of Co nuclides is also possible by decomposition of the CoSO4 species at e...

The metastable zone width (MSZW) and induction time of CoSO4 in the presence H2SO4 were measured at various operating conditions by polythermal isothermal methods, respectively. Raman spectroscopy UV–Vis have been successfully adopted for measuring solubility CoSO4. nucleation parameters estimated with a self-consistent Nývlt-like approach classical 3D theory approach. results show decrease an ...

We report a case of occupational asthma caused by cobalt associated with systemic symptoms. He was a non-atopic, ex-smoker and had worked in a glassware factory for 14 months. A skin prick test with CoSO4 up to 100 mg/ml showed a negative result. A bronchoprovocation test with CoSO4 demonstrated an isolated asthmatic response with systemic symptoms such as fever, arthralgia and myalgia. Althoug...

Published estimates for the equilibrium relative humidity (RH) at 25 °C for the reaction: bieberite (CoSO4·7H2O) = moorhouseite (CoSO4·6H2O) + H2O, range from 69.8 to 74.5%. To evaluate these data, the humidity-buffer technique was used to determine equilibrium constants for this reaction between 14 and 43 °C at 0.1 MPa. Reversals along fi ve humidity-buffer curves yield ln K = 18.03–6509.43/T,...

Semi-batch evaporative crystallization of CoSO4 was investigated at various underpressures and with different heating powers. The for boiling aqueous solutions temperatures concentrations were measured compared to predicted values obtained by the Aspen Plus Version 11 process simulation software. presence solute decreased underpressure solution in comparison pure water. In experiments, crystall...

For their normal living, honey bees (Apis mellifera) require proteins, carbohydrates, lipids, vitamins and minerals. It is well known that Co and vitamin B12 are two nutrients that have been reported in pollen and plants that have had positive results in bees feeding. In this respect, the aim of the study is to determine the influence of feeding of the bee families with CoSO4 as a supplement on...

ABSTRACT. For lump and nanocobalt sulfate (CoSO4) in pure water, the affiliation thermodynamic association characteristics were measured at 298.15, 303.15, 308.15, 313.15 K. Based on bulk nano CoSO4 molar conductance, estimates made for parameters of solvation, such as activity coefficient, free energy association, enthalpy constant, entropy association. We discussed about each these solvation ...

An electrochemical cell has been developed for in situ x-ray diffraction from a working electrode under clean conditions equivalent to ultrahigh vacuum conditions of 5310 mbar. The substrate crystals can be prepared ex situ and transferred into the cell under protection of ultrapure water within a few seconds. The oxygen level in the electrolyte is reduced by continuous N2 flow to less than 0.2...