Study of phase behavior and Congo red dye partitioning in aqueous two-phase systems composed of hydrophilic alcohols (1-propanol/ 1-butanol) and sodium salts

Shahriari, Mohadeseh; Kiani, Reza; Khayati, Gholam

doi:10.1080/01496395.2019.1594900

Cited by 7 publications

(3 citation statements)

References 44 publications

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“…In addition, it is considered to have a high amount of total organic carbon (TOC) and low amount of degradable waste. 11 There are different removal methods of antibiotics from wastewater, such as biological, 12 adsorption with activated carbon, 13 ozonation, 14 photo-Fenton, 15 ultraviolet radiation, 16 reverse osmosis, 17 and flocculation. Among these, the biological removal method is not good enough for wastewater treatment including antibiotics because of the presence of the Naftel constant ring and its toxicity for microorganisms and environmental problems of disposal.…”

Section: Introductionmentioning

confidence: 99%

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Improving the Extraction of Tetracycline from Aqueous Solution by the Use of Acetone as an Adjuvant in ATPS Containing Poly(ethylene glycol) and Organic Salts and the Study of Its Phase Behavior

Torabi,

Samimi Choukami,

Nikkhah

et al. 2023

Ind. Eng. Chem. Res.

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In this study, the solubility data of two-phase systems for tripotassium citrate and potassium sodium tartrate with PEG4000, 3000, 2000, 1000, and 400 g/mol were experimentally obtained. These data were fitted using empirical equations with MATLAB software. Also, the tie-lines were obtained and fitted by the Othmer–Tobias and Bancroft equations. The results were confirmed by UNIQUAC modeling. Tripotassium citrate resulted as the best salt according to the salting-out ability. The 16 experiments were done based on the Taguchi design of experiment (DOE) to extract the tetracycline from an aqueous solution; the results were analyzed with Minitab 18 software. Acetone was used as an adjuvant in this process. Polymer molecular weight and acetone concentration had the greatest effects on tetracycline extraction efficiency. The maximum extraction (99.78%) was obtained at the concentration of 5 ppm of tetracycline and 8 (% w/w) of acetone with PEG400.

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Section: Introductionmentioning

confidence: 99%

“…Also, the cost-effectiveness issue has made adsorption and oxidation methods out of usage. Using membranes might cause damage from the different organic solvents. − Solid-phase extraction or matrix solid-phase dispersion methods usually take a while and have a low selectivity factor.…”

Section: Introductionmentioning

confidence: 99%

Improving the Extraction of Tetracycline from Aqueous Solution by the Use of Acetone as an Adjuvant in ATPS Containing Poly(ethylene glycol) and Organic Salts and the Study of Its Phase Behavior

Torabi,

Samimi Choukami,

Nikkhah

et al. 2023

Ind. Eng. Chem. Res.

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“…Therefore, polyethylene glycols with a molecular weight of 1000–8000 are used to extract metal ions. Increasing the salt concentration reduces the volume of the salt phase and causes the metal ions to move towards the polymer phase 38 – 40 .…”

Section: Introductionmentioning

confidence: 99%

An efficiency strategy for cobalt recovery from simulated wastewater by biphasic system with polyethylene glycol and ammonium sulfate

Amjad

Asadollahzadeh

Torkaman

et al. 2022

Sci Rep

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Today, biphasic aqueous systems have received more attention than conventional separation methods due to their advantages, such as biocompatibility, low cost, and easy operation. The extraction of cobalt ions from the aqueous phase with the absence and the presence of other ions was investigated using polyethylene glycol, and ammonium sulfate salt without using an extractant. The efficiency was evaluated using operating parameters such as aqueous pH, salt and polymer concentrations, phase volume ratio, and initial metal concentration. The higher temperature, and the lower aqueous pH showed a maximum transfer rate for cobalt ions into the PEG1000 phase. Extraction efficiency under optimal conditions equal to 50% (w/w) polyethylene glycol 1000, 4 M ammonium sulfate, aqueous pH = 2, and 15 min extraction time was over 98%. Results from infrared spectroscopy, and thermo-gravimetric analysis illustrated the presence of the PEG-cobalt ion complex. The observation demonstrated that the biphasic system is the proper technology for wastewater purification.

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Influence of Organic Salts on the Phase Equilibrium of Biphasic Systems Containing the Nonionic Surfactant (Triton X-100): Experiment and Correlation

et al. 2023

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Study of phase behavior and Congo red dye partitioning in aqueous two-phase systems composed of hydrophilic alcohols (1-propanol/ 1-butanol) and sodium salts

Cited by 7 publications

References 44 publications

Improving the Extraction of Tetracycline from Aqueous Solution by the Use of Acetone as an Adjuvant in ATPS Containing Poly(ethylene glycol) and Organic Salts and the Study of Its Phase Behavior

Improving the Extraction of Tetracycline from Aqueous Solution by the Use of Acetone as an Adjuvant in ATPS Containing Poly(ethylene glycol) and Organic Salts and the Study of Its Phase Behavior

An efficiency strategy for cobalt recovery from simulated wastewater by biphasic system with polyethylene glycol and ammonium sulfate

Influence of Organic Salts on the Phase Equilibrium of Biphasic Systems Containing the Nonionic Surfactant (Triton X-100): Experiment and Correlation

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