Although phosphate and carbonate are important constituents in ancient and modern environments, it is not yet clear their biogeochemical relationships and their mechanisms of formation. Microbially mediated carbonate formation has been widely studied whereas little is known about the formation of phosphate minerals. Here we report that a new bacterial strain, Tessarococcus lapidicaptus, isolate...

Oxides (such as SiO₂, TiO₂, ZrO₂, Al₂O₃, Fe₂O₃, CeO₂) have often been used to prepare supported Pt catalysts for CO oxidation and other reactions, whereas metal phosphate-supported Pt catalysts for CO oxidation were rarely reported. Metal phosphates are a family of metal salts with high thermal stability and acid-base properties. Hydroxyapatite (Ca10(PO₄)₆(OH)₂, denoted as Ca-P-O here) also has...

Selective solid-phase reduction of iron and phosphorus in oolite ores the Lisakovsky Ayat deposits was experimentally studied. Using X-ray phase analysis, composition initial samples after roasting determined. Goethite, magnetite quartz were found both deposits. Phosphorus ore deposit is form aluminum phosphate hydrophosphate, – as a component calcium hydrophosphate. Experiments on carried out ...

The recovery of phosphorus (P) from sewage sludge ashes has been the focus recent research due to initiatives for use biogenic resources and resource recovery. This study investigates ash transformation chemistry P in during co-gasification with K-Si- K-rich agricultural residues wheat straw sunflower husks, respectively, at temperatures relevant fluidized bed technology, namely 800 °C 950 °C. ...

The iron phosphates [C4H12N2][Fe (H2O)6](HPO4)2 (1), 3 ‘{[NH4][Fe III 2(OH)(PO4)2(H2O)]?H2O} (2) and 3 ‘{[C4H12N2][Fe III 3(PO4)3(HPO4)(H2O)]?y0.25H2O}, (3) were synthesized by hydrothermal methods and their single-crystal X-ray structures were determined. While compound 1 is only an extended hydrogen bonded network of its three ionic building blocks, compounds 2 and 3 are three-dimensional ope...

background: phosphorus is an indispensable element for the growth of animals and plants. there are several environmental problems related to phosphate; therefore, the technical and economic methods of removing phosphate are of great importance. this study evaluated the efficiency of polyaniline/ni0.5zn0.5fe2o4 magnetic nanocomposite in removing phosphate from aqueous environments. methods: the ...

Increased oxygen reduction reaction (ORR) kinetics, improved CO tolerance, and more efficient water and heat management represent significant advantages that high-temperature polymer electrolyte fuel cells (HT-PEFCs) operating with a phosphoric acid-doped polybenzimidazole (PBI) membrane offer over traditional Nafion-based, low-temperature PEFCs. However, before such HT-PEFCs become viable, the...

Glutathione-bound gold nanoclusters (AuNCs@GSH) can emit reddish photoluminescence under illumination of ultraviolet light. The luminescence of the AuNCs@GSH is quenched when chelating with iron ions (AuNCs@GSH-Fe(3+)), presumably resulting from the effective electron transfer between the nanoclusters and iron ions. Nevertheless, we found that the luminescence of the gold nanoclusters can be re...

abstracta pot study was conducted in order to evaluate the effect of plant growth promoting rhizobia (pgpr) on canola growth and ionic composition under salt stress conditions, was conducted as factorial in randomized complete block design with three replications. salinity in four levels of 0, 3, 6 &9 ds/m were evaluated with mixture of salts nacl & mgcl2. canola seeds were inoculated with sele...