In this study, various mineral supplements, such as chloride salts (CaCl2, MgCl2, MnCl2, FeCl2 and KCl) supplying cations and calcium salts (CaCl2, CaCO3, CaSO4, Ca(OH)2 and CaHPO4) supplying anions, were tested if they could stimulate the sporulation of Clostridium sporogenes, a surrogate microorganism for C. botulinum. Of the cations tested, the addition of CaCl2 showed a slightly, but not si...

A laboratory-scale submerged anoxic-oxic membrane bioreactor treating municipal wastewater was operated to investigate the structure and distribution of the inorganic cake layer buildup on the membrane. BCR (European Community Bureau of Reference) sequential extraction, X-ray photoelectron spectroscopy (XPS), and both map and line scan of energy-dispersive X-ray analysis (EDX) were performed fo...

Between 2012 and 2015, a field experiment was conducted at the Brody Experimental Farm, Poznan University of Life Sciences, Poland. The following two experimental factors were used in duplicate: calcium sulfate (CaSO4) fertilization—two levels (0 500 kg ha−1); potassium (K) fertilization—four (0, 30, 60, 120 ha−1). soil pH (in H2O) enzyme activity (dehydrogenase, acid phosphatase, alkaline phos...

Materials (cement stone samples) in the CaO-K2O-SO3-H2O system with target phase compositions, including syngenite K2Ca(SO4)2·H2O and calcium sulfate dihydrate CaSO4·2H2O, were prepared from powder mixtures of anhydrite CaSO4, and/or calciolangbeinite K2Ca2(SO4)3, potassium K2SO4 via hydration reactions at a water/powder ratio within an interval 0.5–0.9. It was revealed that samples contents 25...

The purpose of this study was the dosimetric evaluation of thermoluminescent detectors of calcium sulphate doped with dysprosium (CaSO4:Dy) produced by IPEN compared to the TL response of lithium fluoride doped with magnesium and titanium (LiF:Mg,Ti) dosimeters and microdosimeters produced by Harshaw Chemical Company to clinical photon beams dosimetry (6 and 15 MV) using liquid water and PMMA p...

Human demand for energy has reached unprecedented levels. A high-efficiency chemical heat pump (CHP) that uses solar thermal as source called SCHP system been studied decades in our laboratory. The (SCHP) using CaSO4∙1/2H2O/CaSO4 can store the form of and release it hot cold heat. This study presents a simplified three-dimensional unsteady model reactant bed releasing step system. is programmed...