Neutralization of Acidic Sulfur Species by Calcite in Mineral Aerosols Collected in China and Japan Studied by Ca K-Edge X-Ray Absorption Near-Edge Structure Spectroscopy X-ray absorption near-edge structure studies at the calcium K-edge have been used to show that acidic sulfur species in the atmosphere (e.g., H2SO4), mainly released by human activities, can be neutralized by the calcite prese...

A systematic selection of different transmembrane pressures (TMP) and levels diafiltration (DF) was studied to optimize these critical process parameters during the manufacturing micellar casein concentrate (MCC) using spiral-wound polymeric membrane filtration. Three TMPs (34.5, 62.1, 103.4 kPa) four DF (0, 70, 100, 150%) were applied in study. The effect TMP level on flux rates, serum protein...

Sheep´s milk whey is an important source of protein and present functional properties. Studies related to the concentration sheep´s proteins are still scarce in literature. In order improve not only chemical, physical properties foods, but also absorption characteristics proteins, without impairing nutritional value, enzymatic hydrolysis process can be used. From generated bioactive peptides th...

The x-ray emission with the single crystal of lithium niobate (LiNbO3) or lithium tantalite (LiTaO3) by thermal changes in a vacuum system is closely concerned with the electronic state of each crystal. Therefore, lithium Kedge x-ray absorption near edge structures (XANES) spectra of these materials were measured in the region from 50 eV to 90 eV by means of total electron yield method (T.E.Y.)...

Microbial electrolysis cells (MECs) provide a high-yield method for producing hydrogen from renewable biomass. One challenge for commercialization of the technology is a lowcost and highly efficient cathode. Stainless steel (SS) is very inexpensive, and cathodes made of this material with high specific surface areas can achieve performance similar to carbon cathodes containing a platinum cataly...

Crossflow microfiltration was implemented to enrich a clementine/pink grapefruit juice in carotenoids, flavonoids and pectins modulating its sugar content thanks an added diafiltration step. Using tubular ceramic membrane with pore diameter of 0.2 ?m at 30–40 °C, crossflow velocity 5 m?s?1 transmembrane pressure 2.6 bar, the impact process assessed focusing on bioactive compounds physical chara...

This study investigates the mechanism of protein particle formation during ultrafiltration/diafiltration (UF/DF), finding that agitation drives particle formation by promoting protein-interface adsorption and desorption. Low conductivity and the presence of surfactant reduced the level of particle formation in small-scale stirring studies, and the same trends were observed in pumping and UF/DF....