according to the reaction:(Fe)(PO)˙8HO + 1/2O→ (Fe)(Fe)(PO)(OH)˙(8–x)HOin which some of the water of crystallization is converted to hydroxyl anions.Complexity of the OH stretching region through the overlap of broad bands is reflected in the water HOH deformation modes at 1660...
Taking sponge iron as seed material, the effect of different reaction conditions on the recovery of phosphorus in waste activated sludge by vivianite crystallization was studied. Through single factor test, the optimal conditions for vivianite formation were in the pH range of 5.5–6.0 with Fe/P ...
Bartl, H. Water of crystallization and its hydrogen-bonded crosslinking in vivianite Fe3(PO4)2*8H2O; a neutron diffraction investigation. Fresenius' Z. Anal. Chem. 1989, 333, 401-403.Bartl H (1989) Water of crystallization and its hydrogen-bonded cross linking in vivianite Fe3 PO4...
Hansen HCB,Poulsen IF.Interaction of synthetic sulphate "green rust"with phosphate and the crystallization of vivianite. Clays and Clay Minerals . 1999Hansen, H. C. B. & Poulsen, I. F. Interaction of synthetic sulphate `green rust' with phosphate and the crystallization of ...
Isotopic composition of oxygen in the siderite ( δ 18 O VPDB values between about 10 and -11‰ ) is consistent with crystallization temperature at about 10–30°C and water δ 18 O SMOW values between about 10 and -16‰ . The distribution of the authigenic minerals in the section ...
Over 99 % of the P in the liquid could be recovered by subsequent vivianite crystallization, and 60 % total P recovery efficiency was obtained. The scanning electron microscopy and X-ray diffraction analyses showed that the co-precipitation of Ca and Mg affected vivianite purity. The recovered ...
Phosphate recovery from wastewater via vivianite crystallization using separable ferrous modified biochar beadsP recoveryVivianiteFerrous modified biochar beadsWastewater treatmentFerrous modified biochar beads (Fe/SABC) with three-dimensional reed skeletal network uniformly dispersing Fe particles (FeO, Fe3O4 ...
Bovine serum albumin, humic acids and alginate , as model compounds of proteins, humic acids and polysaccharides , all inhibited vivianite crystallization, with the influence of humic acids being the most significant. A sludge retention time of >12d for effective degradation of organic compounds and...
The main objectives of this research are (1) introducing FeCl3 as a coagulant to enhance P accumulation in WAS; (2) promoting procedures of enzymatic hydrolysis of the WAS to release P into the supernatant and to form HAs; (3) exploring the influencing factors of vivianite crystallization with...
Recovery of phosphorus from aqueous media as vivianite by crystallization 2023, Clean - Soil, Air, Water A Forensic Case Study of Vivianite Encrustation on Historical Skeletal Remains Found in Maryland, United States 2023, Historical Archaeology1 Data obtained as a part of the project "Nutrition an...