Extraction and enrichment of zinc from chloride media using emulsion liquid membrane: Emulsion stability and demulsification via heating-ultrasonic method

Suliman, Sazmin Sufi; Othman, Norasikin; Noah, Norul Fatiha Mohamed; Kahar, Izzat Naim Shamsul

doi:10.1016/j.molliq.2023.121261

Cited by 13 publications

(3 citation statements)

References 42 publications

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“…It should be noted that the reaction time required to reach 99% extraction increased with the decrease in the extractant concentration. In the case of 60% v/v solution and iron(III), the time required was one hour against three hours for a solution of 20% v/v, whereas in the case of chromium(III), the time required was of one and a half hours and five hours for extractant concentrations of 60% v/v and 20% v/v, respectively, and similar dependences were reported in the literature[29][30][31]. In the case of nickel(II), the same effect was observed, though the percentage of nickel extraction at a fixed time was much lower than the values obtained for both iron(III) and chromium(III) (Table5).…”

supporting

confidence: 83%

Treatment of Stainless Steel Rinse Waters Using Non-Dispersive Extraction and Strip Dispersion Membrane Technology

Alguacil,

Robla

2023

Membranes

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The extraction of Fe(III), Cr(III), and Ni(II) from stainless steel rinse water using non-dispersive extraction and strip dispersion membrane technology was carried out in a microporous hydrophobic hollow-fibre module contactor. The fibres were of polypropylene, whereas the organic extractant DP8R (bis(2-ethylhexyl) phosphoric acid) diluted in ExxsolD100 was used as the carrier phase. The rinse water containing the three elements was passed through the tube side, and the pseudo-emulsion formed by the organic phase of DP8R in Exxol D100 and an acidic strip solution were passed through the shell side in a counter-current operation; thus, a unique hollow fibre module was used for extraction and stripping. In non-dispersive extraction and strip dispersion technology, the stripping solution was dispersed into the organic membrane solution in a vessel with an adequate mixing device (impeller) designed to form strip dispersion. This pseudo-emulsion was circulated from the vessel to the membrane module to provide a constant supply of the organic phase to the membrane pores. Different hydrodynamic and chemical variables, such as variation in feed and pseudo-emulsion flow rates, strip phase composition, feed phase pH, and extractant concentration in the organic phase, were investigated. Mass transfer coefficients were estimated from the experimental data. It was possible to separate and concentrate the metals present in the rinse water using the non-dispersive extraction and strip dispersion technique.

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supporting

confidence: 83%

Treatment of Stainless Steel Rinse Waters Using Non-Dispersive Extraction and Strip Dispersion Membrane Technology

Alguacil,

Robla

2023

Membranes

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“…Likewise, some basic extractants showed insignificant effect towards phosphorus extraction. This could be explained by the fact that the amine based extractants such as TOA and TEA are more suitable for the extraction of anion complexes from basic solutions via anion exchange process [23].…”

Section: Effect Of Extractants Types Towards Phosphorus Extractionmentioning

confidence: 99%

Novel Extraction of Phosphorus using Interaction of Tricaprylylmethylammonium Chloride (TOMAC) with Biodegradable Mixture of Vegetable Oils

Raja Sulaiman,

Rosli,

Othman

et al. 2023

Mal. J. Fund. Appl. Sci.

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This work addresses the development of green formulation for phosphorus compound removal from aqueous solution via solvent extraction process. Several types of extractants, diluents and stripping agents were experimentally investigated and the best formulation was determined. Additionally, other parameters investigated were extractant and stripping agent concentrations. Results showed that TOMAC, a mixture of palm oil (PO) and sunflower oil (SO) as well as sodium chloride (NaCl) turned out to be the best extractant, diluent and stripping agent, respectively. Almost 100 % of 50 ppm of phosphorus were successfully extracted under optimum conditions of 0.3M TOMAC in a mixture of 50% PO + 50% SO. Fourier-transform infrared spectroscopy (FTIR) analysis confirmed the intermolecular bonding formation between phosphorus, vegetable oils and TOMAC molecules. Meanwhile, almost 96.5% of phosphorus can be recovered using 1.0M NaCl in two stages of stripping process. Stoichiometric studies showed that about one mole of TOMAC and NaCl were involved during the extraction and stripping reaction of phosphorus, respectively. It can be concluded that the solvent extraction with new green formulation containing TOMAC in interaction with vegetable oils seems to be one of the novel sustainable approaches in removing phosphorus from agricultural wastewater.

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“…They were trying to understand the role and effect of influencing parameters like pH of solution and type and concentration of extractant [10,11]. For example, acidic extractants (Cyanex 302 [12], D2EHPA [13], and Cyanex 272 [14]) and chelating extractants (LIX 984N [15], LIX 63 [16], and LIX 84 [17]) have been used for this purpose. Di-2ethyl hexyl phosphoric acid (D2EHPA) as a classical extractant, has been widely used in extraction and separation of the divalent transition metals such as zinc, manganese, nickel, cobalt and copper [18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation and Thermodynamic Modeling of Zn+2 and Ni+2 Extraction from Zn Plant Residue using D2EHPA

Mohammadzadeh,

Bagheri,

Ghader

2023

IJE

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Zinc plant filter cake contains valuable metals that can be reused as a source for obtaining these metals. This study describes an experimental two stage study on the extraction of zinc and nickel from waste zinc filter cake which includes acid leaching of zinc filter cake followed by organic phase aided extraction of metals from the leaching solution. To determine the optimum leaching condition a comprehensive study of the recovery of chemical elements from spent plant residues was experimentally studied at different levels of acid concentrations at different temperatures while measuring chemical elements concentration with respect to time. Experimental results showed that 99% recovery of Ni 2+ , Zn 2+ and 89% recovery of Pb 2+ can be achieved at following optimum conditions: 2M nitric acid, T= 358.15 K after 1.5 h of acid leaching at S/L=1/10. Then, the extraction of Zn 2+ , Ni 2+ , and Pb 2+ was carried out by di-(2-ethylhexyl) phosphoric acid (D2EHPA) that was diluted with kerosene in equal phase ratio and the effect of extractant concentration and pH was studied at T = 298.15 K. Results showed that an increase in pH and extractant concentration can greatly increase zinc and nickel extraction to a maximum achievable amount of 95% and 90 % for Zn 2+ and Ni 2+ , respectively by 25 (v/v%) D2EHPA at pH = 5.5 and organic to aqueous phase ratio (O/A) = 1/1. For modeling of equilibrium concentrations in organic and aqueous phases and activity coefficients calculation, Electrolyte-UNIQUAC-NRF, UNIQUAC-NRF, NRTL and NRTL-based local composition models were used. After that, adjusted parameters were successfully used for calculation of the equilibrium constant of the unknown parameters and the extraction reaction. The obtained results of thermodynamic modeling were in well agreement with the experimental data.

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Extraction and enrichment of zinc from chloride media using emulsion liquid membrane: Emulsion stability and demulsification via heating-ultrasonic method

Cited by 13 publications

References 42 publications

Treatment of Stainless Steel Rinse Waters Using Non-Dispersive Extraction and Strip Dispersion Membrane Technology

Treatment of Stainless Steel Rinse Waters Using Non-Dispersive Extraction and Strip Dispersion Membrane Technology

Novel Extraction of Phosphorus using Interaction of Tricaprylylmethylammonium Chloride (TOMAC) with Biodegradable Mixture of Vegetable Oils

Experimental Investigation and Thermodynamic Modeling of Zn+2 and Ni+2 Extraction from Zn Plant Residue using D2EHPA

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