Solvent extraction of copper from the copper leach solution obtained from the ammoniacal carbonate leaching of the Sarcheshmeh copper concentrate was carried out, and the performance of CP-150, LIX984N, and Kelex100 as well as the effects of different parameters involved were investigated. According to the results obtained, the extraction kinetics of all the three extractants was fast. High con...

In-situ leaching of molybdenum and uranium is becoming an increasingly common process. The features the material composition ores, leading to a decrease in their filtration properties, were considered. Activation with solutions that have undergone electrophotochemical activation before contact ore mass studied. preparation promotes synthesis clustered water molecules collectivized protons hydro...

Abstract Phosphorus (P) reactions in calcareous soils limit the concentration of P soil solution for plant uptake. Calcareous with high calcium carbonate content (CaCO 3 ) and pH have low fertiliser efficiency, leading to crop deficiency limited productivity. The aim this work was test if acidifying amendments could reduce improve solubility nutrition biomass. Three varying CaCO (14–29% w/w) we...

Struvite is the most common canine urolith. Struvite uroliths form when urine is supersaturated with magnesium, ammonium, and phosphate. Saturation is usually associated with a bacterial urinary tract infection (UTI) with urease-producing bacteria such as Staphylococcus species or, less commonly, Proteus species. Infections are particularly common in female and young dogs. Medical dissolution o...

A highly practical, catalytic enantioselective cyclic phosphite addition to aldehydes and ketones was developed. The reaction rate of the asymmetric hydrophosphonylation was significantly enhanced by the addition of silver carbonate. Particularly, significant improvement has been achieved on the asymmetric hydrophosphonylation of unactivated ketones, giving quaternary α-hydroxy phosphonates wit...

Abstract: The main aim of this study is to investigate about citric acid production by ETGP12 and ETGP18 strains of Aspergillus niger with the inclusion of certain nutrients along with the substrates. The substrates (rice chaff and sesamum oil cake) were fermented in the presence of different nutrients like ammonium carbonate and potassium dihydrogen phosphate at concentrations ranging from 0.1...

This paper describes a method for the selective precipitation and purification of a monovalent protein (carbonic anhydrase is used as a demonstration) from cellular lysate using ammonium sulfate and oligovalent ligands. The oligovalent ligands induce the formation of protein-ligand aggregates, and at an appropriate concentration of dissolved ammonium sulfate, these complexes precipitate. The pu...