PVDF-HFP based polymer inclusion membranes containing Cyphos IL 101 and Aliquat 336 for the removal of Cr(VI) from sulfate solutions was written by Bahrami, Salar;Yaftian, Mohammad Reza;Najvak, Pourya;Dolatyari, Leila;Shayani-Jam, Hassan;Kolev, Spas D.. And the article was included in Separation and Purification Technology in 2020.Quality Control of N-Methyl-N,N-dioctyloctan-1-aminium chloride The following contents are mentioned in the article:
Poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) was used for the preparation of polymer inclusion membranes (PIMs) containing trihexyltetradecylphosphonium chloride (Cyphos IL 101) or trioctylmethylammonium chloride (Aliquat 336) for the removal of Cr(VI) from sulfate solutions PIMs containing 50 wt% of Cyphos IL 101 or Aliquat 336, with corresponding thicknesses of 54 ± 7 or 48 ± 9μm, were transparent and mech. stable. SEM, at. force microscopy, thermogravimetric anal., stress-strain anal., and contact angle measurements were used for characterizing PIM surface morphol., thermal and mech. properties. The extraction experiments were performed by immersing a circular PIM segment (3.5 cm in diameter) in a 50 mL sulfate solution containing 2.0 x 10-4 mol L-1 of Cr(VI). The optimum conditions with respect to pH and sulfate concentration were 1.2 and 0.045 mol L-1, resp. The results indicated a higher extraction rate of Cr(VI) by the PIM containing Cyphos IL 101 in comparison with that achieved by the Aliquat 336 based PIM. Anal. of the extraction data confirmed that the main extracted species into both PIMs was HCrO–4. A variety of stripping reagents were tested and best results were obtained with 1.0 mol L-1 NaNO3 which allowed efficient back-extraction of Cr(VI) from the loaded PIMs containing Cyphos IL 101 or Aliquat 336. The extraction capacity of the Cyphos IL 101 and Aliquat 336 based PIM was 71 mg and 70 mg of Cr per 1 g of membrane and they could be reused for 16 and 6 consecutive extraction/back-extraction cycles, resp. It was found that the mass loss of the Cyphos IL 101 PIMs in these experiments was significantly lower than that observed for the Aliquat 336 based PIMs. These results illustrated the excellent stability of the Cyphos IL 101 based PIM. Both Cyphos IL 101 and Aliquat 336 based PIMs did not experience interference in the extraction of Cr(VI) by other common cations. The Cyphos IL 101 based PIM extracted selectively Cr(VI) in the presence of up to 500 fold excess of nitrate and chloride anions, while this selectivity was limited to 10 fold for the Aliquat 336 based PIM. The potential of both PIMs for practical applications was demonstrated with the removal of Cr(VI) from well water and industrial wastewater. This study involved multiple reactions and reactants, such as N-Methyl-N,N-dioctyloctan-1-aminium chloride (cas: 5137-55-3Quality Control of N-Methyl-N,N-dioctyloctan-1-aminium chloride).
N-Methyl-N,N-dioctyloctan-1-aminium chloride (cas: 5137-55-3) belongs to organic chlorides. Chlorination modifies the physical properties of hydrocarbons in several ways. These compounds are typically denser than water due to the higher atomic weight of chlorine versus hydrogen. Aliphatic organochlorides are often alkylating agents as chlorine can act as a leaving group, which can result in cellular damage.Quality Control of N-Methyl-N,N-dioctyloctan-1-aminium chloride
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics