Contribution of adsorption of metals using calcium phosphates in the presence of support polyethylene glycol
نویسندگان
چکیده
The extraction of metals from supports based on calcium phosphate was investigated; we conducted experiments with metal solutions at various concentrations, and using two carriers’ calcium phosphate hydroxyapatite and hydroxyapatite in the presence of polyethylene glycol polymer. The results show a metal retention of selectivity with excellent yields. The kinetic study shows that the extraction equilibrium is fast for both matrices used. The present work relates to the adsorption of metal ions of cadmium, cobalt and copper. The adsorptive capacity of calcium phosphates been interpreted in terms of adsorption isotherms by exploiting both the Langmuir and Freundlich model. The highest adsorption quantities are improved out in the presence of PEG and reached 0.7 mmol / g, 0.66 mmol / g and 0.62 mmol / g respectively for the cadmium, copper and cobalt.
منابع مشابه
Magnetite nanoparticles coated with methoxy polyethylene glycol as an efficient adsorbent of diazinon pesticide from water
Methoxy polyethylene glycol modified magnetite nanoparticles (PEGMNs) were synthesized and characterized by scanning electron microscopy (SEM), vibrating sample magnetometer (VSM), and X-ray diffraction (XRD). The adsorption of diazinon onto PEGMNs was investigated by UV-Vis spectrophotometry at 236 nm, through batch experiments. The effects of adsorbent dosage, solution pH, contact time, solut...
متن کاملRemoval of Mercury (II) from Wastewater by Magnetic Solid Phase Extraction with Polyethylene Glycol (PEG)-Coated Fe3O4 Nanoparticles
The presented study investigates application of polyethylene glycol (PEG)-coated Fe3O4 nanoparticles as an magnetic nanoadsorbent for magnetic solid-phase extraction (SPE) and the selective removal of toxic heavy metals such as mercury (II) from aqueous solutions and their determination using graphite furnace atomic absorption spectrometry (GF-AAS)...
متن کاملDechlorination of Polychlorinated Biphenyls in Real Waste Transformer Oil Using a Modified Household Microwave Oven in Presence of Sodium Hydroxide and Polyethylene Glycol
This research was carried out to assess the dechlorination and decomposition of Polychlorinated biphenyls (PCBs) in the real waste transformer oil using polyethylene glycol 1000/NaOH through a modified household microwave oven. To do so, the influence of polyethylene glycol (PEG) (1.5-7.5 g) and NaOH (0.3-1.5 g) under microwave (MW) power of 500 W on the dechlorination efficiency of PCBs, exist...
متن کاملSurface Adsorption of Polyethylene Glycol and Polyvinyl Alcohol with Variable Molecular Weights on Zinc Oxide Nanoparticles
متن کامل
Effect of Polyethylene Glycol and Senna Bowel Preparation in Dogs on Some Hematological and Serum Biochemical Parameters
Background: Colonoscopy is the preferred procedure for diagnosis of large-bowel diseases in dogs. Polyethylene glycol (PEG) is the most commonly used laxative for colonic cleansing. Senna has been used in traditional medicine as a laxative and an aid to treat constipation. OBJECTIVES: The aim of this study was to evaluate the safety of senna as an alternative or adjunct to polyethylene glycol s...
متن کامل