(Liquid–liquid) equilibrium (LLE) data for the ternary systems of water + 1-propanol + solvent (n-amyl acetate, cyclohexanol, and cyclohexyl acetate) were measured at T = 298.2 K and atmospheric pressure. Selectivity values for solvent separation efficiency were derived from the tie-line data. ...

Comamonas testosteroni TA441 degrades steroid compounds via aromatization of the A-ring to produce 9,17-dioxo-1,2,3,4,10,19-hexanorandrostan-5-oic acid (a metabolite with C- and D-rings), which is presumed to be further degraded via β-oxidation. In elucidating the complete steroid degradation p...

The kinetics of electrode reactions that take place on copper, silver and gold electrode in acid thiourea-citrate electrolytes has been studied. It is established that the anodic dissolution of metals is accompanied by the formation of stable thiourea metal complexes of a cation-type complex. Th...

A copper(II) complex with the first antibacterial quinolone drug nalidixic acid (=nal) has been synthesized and characterized in the presence of N-donor heterocyclic ligand 2,2′-bipyridyl (=bpy). The molecular structure of the complex reveals a distorted square pyramidal based geometry in Cu(II...

Owing to the enormous threat from anthropogenic contamination in water resources, the effective control of heavy-metal pollution has become increasingly important. In this study, the combination of permanent magnetic anion exchange resin (MAER) and magnetic cation exchange resin (MCER) was emplo...

In this work, an environmentally-friendly leaching process for the recovery of indium (In) and tin (Sn) from LCD panel waste was investigated. Easily degradable citrates (C6H5O73−), i.e., sodium citrate and citric acid, were used as complexing agents. The morphology and composition of the specie...

The polymer assisted ultrafiltration (PAUF) process for treatment of wastewaters containing metal ions chelated with citric acid has been studied giving particular attention to the chemical and operational aspects. The polyethylenimine (PEI) polymer bound quantitatively the copper(II)–citrate c...

An integral closed circuit hydrometallurgical process is presented for base metal recovery from electronic waste. The leaching medium consists of a sodium citrate solution, from which base metals are retrieved by direct electrowinning, and the barren solution is recycled back to the leaching sta...

E-waste is a potential source of large quantities of metals. The ability of citrate solutions to recover base metals from these materials has been demonstrated. In the present study, the effect of the temperature on base metal leaching capacity by the citrate solutions is determined. The materia...

A novel CuO-CeO2-CoOx nanocatalyst was prepared for heterogeneous Fenton-like reaction to break the Ni2+-chelate into free Ni2+ in electroless nickel plating wastewater, followed by separation of Ni2+ in an insoluble form. The composite nanocatalysts prepared by co-precipitation method were char...

The gold nanoparticles (GNPs) were obtained by modification of the classical Turkevich citrate method by the addition of copper(II) ions in the initial reaction mixture. We studied the kinetics of the nanoparticles growth with or without copper(II) ions, synthesized at two different temperatures...

Copper oxide nanoparticles (nano CuO) provide Cu2+ ions which can be easily harnessed for protein determination as an alternative to the use of copper sulfate (CuSO4). In the present work, nano CuO of size

Solid-state M–L compounds, where M stands for bivalent Mn, Fe, Co, Ni, Cu, Zn and L is tartrate, have been synthesized. Thermogravimetry and differential thermal analysis (TG–DTA), differential scanning calorimetry (DSC), X-ray powder diffractometry, infrared spectroscopy, elemental analysis a...

With the aim of elucidating the mechanism of oxidative processes initiated by copper(II)–carbohydrate interactions, new isatin–Schiff base copper(II) complexes, [Cu(isaen)H2O]ClO4·2H2O (1), and [Cu(isaepy)2](ClO4)2·2H2O (2), where isaen = N-[(3-indolin-2-one)]-1,3-ethylenediamine and isaepy ...

Saccharose, forming sufficiently stable complexes with copper(II) ions in alkaline solutions, was found to be a suitable ligand for copper(II) chelating in alkaline (pH > 12) electroless copper deposition solutions. Reduction of copper(II)–saccharose complexes by hydrated formaldehyde was inves...

The deposition of conductive metal layers on non-conductive material represents a key technology in the development of textile fiber based smart materials. We describe the results of a study on the electroless copper deposition on a woven cellulose fabric via surface activation through silver se...

Cu and Co metal oxide nanoparticles were obtained from the thermal decomposition of the corresponding tartrate complexes ([M(C4H2O6)n]m, M = Cu(II), Co(II)). The complexes were prepared by metathesis reactions in water and characterized by Fourier transform infrared spectroscopy, Thermal gravime...

In this work we demonstrate the role of a ligand in formation of the conductive and electrocatalytically active copper microstructures produced using the in situ laser-induced metal deposition technique. For this purpose, the alkaline solutions of different concentrations containing copper(II) c...

Pure manganese tartrate and copper tartrate compounds find various applications. In the present study, manganese–copper mixed levo tartrate crystals of different compositions have been grown by single diffusion gel growth technique in silica hydro gel. Purple blue colored mainly dendrite type c...

A modified approach for the synthesis and crystallization of copper (II)-l-tartrate was developed. The cell parameters of the crystal were found to match with those of the earlier crystallographic report on this material and the bulk purity of the sample was ascertained by elemental analysis. Th...