Removal of cobalt from human serum and environmental samples by adsorption using Amberlite XAD-2–salicylic acid–iminodiacetic acid

Abstract

2012) Removal of cobalt from human serum and environmental samples by adsorption using Amberlite XAD-2-salicylic acid-iminodiacetic acid, Desalination and Water Treatment, 46:1-3, 244-255, A B S T R A C TA new chelating resin was prepared by coupling Amberlite XAD-2 with salicylic acid (SAL) through an azo spacer. Then the polymer support was coupled with iminodiacetic acid (IDA). The resulting sorbent has been characterized by FT-IR, elemental analysis, thermogravimetric analysis, and scanning electron microscopy, and studied for the preconcentration and determination of trace Co(II) ion from human biological fluid and environmental water samples. The optimum pH value for sorption of the metal ion was 7.5. The sorption capacity of functionalized resin was 87.4 mg g À1 . The chelating sorbent can be reused for 20 cycles of sorption-desorption without any significant change in sorption capacity. A recovery of 95.3% was obtained for the metal ion with 0.5 M nitric acid as the eluting agent. The profile of cobalt uptake on this sorbent reflects good accessibility of the chelating sites in the Amberlite XAD-2-SAL/IDA. Scatchard analysis revealed that the homogeneous binding sites were formed in the polymers. The equilibrium adsorption data of Co(II) on modified resin were analyzed by Langmuir, Freundlich, Temkin, and Redlich-Peterson models. Based on equilibrium adsorption data, the Langmuir, Freundlich, and Temkin constants were determined to be 2.265, 56.82, and 148.56 at pH 7.5 and 25˚C, respectively. The method was applied for cobalt ion determination from human plasma and sea water sample.

Removal of Radioactive Wastes Using Nanomaterials

“…Furthermore, pressurized water nuclear power reactors can discharge the radionuclide, 60 Co, as they are used in medicine and industries as radionuclide; 60 Co can cause serious hazard to the environment. So the studies have been carried out by designing new animation graphene oxide (GO-NH2) nanosheet membrane for the adsorption of Co(II) ions as it is important for nuclear waste management as it acts as filter membrane [19][20][21].…”

Removal of Pb(II) and Co(II) ions from aqueous solution and industrial wastewater using ILNO-NH2: Kinetic, isotherm and thermodynamic studies

“…This is widely used in nuclear medicine, as a foam stabilizer in beer, enamels and semiconductors, grinding wheels, painting on glass and porcelain, hygrometers and electroplating, in vitamin B12 manufacture, varnishes and paints, and as a catalyst for organic chemical reactions [6]. It is also important to note that the small amounts of cobalt is essential for human health, because it is known to be an essential element at trace level in human beings, animals and plants for metabolic processes [7]. However, in high concentrations this metal can cause several health troubles such as lung irritations, low blood 3 pressure, paralysis, bone defects, diarrhea, as well as it may also cause mutations in living cells [8][9][10].…”