Aqueous two-phase systems (polyethylene glycol + ammonia sulfate) for thallium extraction: Optimization of extraction efficiency, structural characterization, and mechanism exploration

Huang, Ying; Chen, Diyun; Kong, Lingjun; Su, Minhua; Chen, Yongheng

doi:10.1016/j.seppur.2019.115740

Cited by 17 publications

(6 citation statements)

References 52 publications

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“…5 Although the mineral industry has developed a highly efficient ion-exchange resin process for lead recovery, lead is still released into the environment with wastewater and distributed in the atmosphere, soil, and water. 2,3 Due to its toxicity, the released lead can severely affect the environment and human health. 6,7 Plants and animals can ingest it since it accumulates in soil, water, and air.…”

Section: Introductionmentioning

confidence: 99%

“…Lead (Pb) is a heavy metal resistant to corrosion and radiation and, thus, widely used in various industries, including semiconductors, nuclear, mining, steel, and metallurgy. − Market demand for lead has increased in the past decade due to the recent development in electronic devices, batteries, and cables . Although the mineral industry has developed a highly efficient ion-exchange resin process for lead recovery, lead is still released into the environment with wastewater and distributed in the atmosphere, soil, and water. , …”

Section: Introductionmentioning

confidence: 99%

“…a r2 and ASE are the coefficient of determination and average standard error (eq 2), respectively.Journal…”

mentioning

confidence: 99%

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Extraction of Lead Ions and Partitioning Behavior in Aqueous Biphasic Systems Based on Polyethylene Glycol and Different Salts

Aunnankat,

Pancharoen,

Kiatkittipong

et al. 2024

J. Chem. Eng. Data

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Lead ions are environmental pollutants often present in very low concentrations, which makes them difficult to detect and, thus, present problems for environmental monitoring. In this study, we examined the performance of aqueous biphasic systems based on polyethylene glycol (PEG, molecular mass of 4000 g mol −1 ) with ammonium sulfate (NH 4 ) 2 SO 4 , magnesium sulfate (MgSO 4 ), sodium sulfate (Na 2 SO 4 ), and trisodium citrate (Na 3 C 6 H 5 O 7 ) for the separation of lead(II) ions from aqueous solutions. We investigated the effects of salt types and the ratio of PEG4000 to salt on the extraction efficiency of lead(II) removal at constant temperatures of 303 K and 0.1 MPa. Additionally, we determined the cloud points (solubility equilibrium curve) and tie-lines for four ternary systems comprising PEG4000, water, and salt (either (NH 4 ) 2 SO 4 , MgSO 4 , Na 2 SO 4 , or Na 3 C 6 H 5 O 7 ) under the same conditions. A maximum lead(II) extraction efficiency of 74.4% was achieved using the PEG4000/(NH 4 ) 2 SO 4 system with a mass fraction ratio of PEG4000 to (NH 4 ) 2 SO 4 of 0.2:0.12. This outcome highlights the significant potential of utilizing aqueous biphasic systems based on PEG4000 to separate lead(II) from aqueous solutions efficiently.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Extraction of Lead Ions and Partitioning Behavior in Aqueous Biphasic Systems Based on Polyethylene Glycol and Different Salts

Aunnankat,

Pancharoen,

Kiatkittipong

et al. 2024

J. Chem. Eng. Data

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“…The use of extraction systems based on water-soluble polymers is a more environmentally friendly method. Traditionally, for the extraction of V(IV) [17], Hg(II), Co(II), Zn(II) [18] and Tl(I) [19] ions, it is carried out using toxic and flammable organic solvents, but this can avoid if using aqueous two-phase systems. In addition, they allow efficient extraction of metals such as Fe (III), Ni (II), La (III), Ce (III).…”

Section: Introductionmentioning

confidence: 99%

The possibility of using DES based on polypropylene glycol 425 and tetrabuthylammonium bromide in the extraction processes of transition metals

Fedorov

Левина

2022

IOP Conf. Ser.: Mater. Sci. Eng.

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Traditionally, the method of liquid extraction is used to extract metals from aqueous. This work is devoted to the combination of perspective alternative for hazardous solvents (aqueous two-phase systems based on water-soluble polymers) and the novel deep eutectic solvents in the non-ferrous metals extraction processes. In this work, the synthesis of deep eutectic solvent based on a water-soluble polymer (PPG-425) and tetrabutylammonium bromide (TBAB) by stirring for 10 minutes at 80° C has been shown. The obtained results showed not only the possibility of using DES in the metal extraction process, but the selectivity to the Fe(III) and Zn(III), the distribution coefficients were 71.64 and 25.17 respectively. The metal concentrations were determined spectrophotometrically using 4-(2-pyridylazo)resorcinol. This work shows the perspectives of using DESs in the metal extraction processes.

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“…Aqueous two-phase extraction (ATPE) technology is an effective separation technology widely used in natural product separation, biological extraction, pharmaceuticals, food chemical industry and other fields (Gu and Glatz 2007;Lee et al 2017;Assis et al 2020;Huang et al 2020). Compared with traditional liquid-liquid extraction, an aqueous two-phase system is a milder extraction and separation technology that is non-toxic, non-flammable, low cost and not prone to emulsion.…”

Section: Introductionmentioning

confidence: 99%

In vitro Antioxidant and Antibacterial Activities of Quinoa Flavonoids Extracted by Ethanol-Ammonium Sulfate Aqueous Two-Phase System

Wu¹

2021

IJAB

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Quinoa (Chenopodium quinoa Willd.) is a functional and ideal food for human nutrition and an Andean seed-producing crop. In this study, ultrasonic-assisted extraction of total flavonoids in Quinoa with ethanol (C2H5OH)-ammonium sulfate ((NH4)2SO4) aqueous two-phase system was performed based on the Box-Behnken experimental design principle. The highest extraction rate of TFQ under the condition of 28% C2H5OH -14% (NH4)2SO4 aqueous two-phase extraction system was used to analyze the variance of TFQ extraction rate as the response value. The multiple quadratic linear regression equation was obtained by a three-factor three-level response surface method. The extraction rate= 74.28+1.78 A+0.10 B+0.38 C+0.20 AB+0.05 AC+0.05 BC+1.000E-002 A2-0.94 B2-0.69 C2. The response surface analysis showed that the best extraction conditions of aqueous two-phase were the crude TFQ mass fraction 20.6%, pH 7.18, NaCl mass fraction 2.23% and the maximum value predicted by the extraction rate model was 75.929 3% (P=0.994). The average extraction rate of TFQ was 75.3%, according to the optimal two-aqueous phase extraction conditions. The ETFQ has varying degree of scavenging effect on hydroxyl radical, oxygen free radicals, nitrite and ·ABTS+ compared with vitamin C. Among them, the scavenging effect of the ETFQ on hydroxyl radical, oxygen free radicals and ·ABTS+ was greater than vitamin C, except nitrite. Also, the ETFQ has the strongest inhibitory effect on E. coli and Bacillus subtilis, and the inhibitory rate can reach up to high dose 97.59 and 98.44%, MIC is 1.56 mg/mL; the second is the inhibition of S. aureus, MIC is 6.25 mg/mL. It has the weakest inhibitory effect on Salmonella. The antibacterial rate was positively correlated with the ETFQ mass concentration. The results help to discover the medicinal effects of quinoa in addition to nutrition to carry out more in-depth research and increase economic value. © 2021 Friends Science Publishers

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Aqueous two-phase systems (polyethylene glycol + ammonia sulfate) for thallium extraction: Optimization of extraction efficiency, structural characterization, and mechanism exploration

Cited by 17 publications

References 52 publications

Extraction of Lead Ions and Partitioning Behavior in Aqueous Biphasic Systems Based on Polyethylene Glycol and Different Salts

Extraction of Lead Ions and Partitioning Behavior in Aqueous Biphasic Systems Based on Polyethylene Glycol and Different Salts

The possibility of using DES based on polypropylene glycol 425 and tetrabuthylammonium bromide in the extraction processes of transition metals

In vitro Antioxidant and Antibacterial Activities of Quinoa Flavonoids Extracted by Ethanol-Ammonium Sulfate Aqueous Two-Phase System

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Aqueous two-phase systems (polyethylene glycol + ammonia sulfate) for thallium extraction: Optimization of extraction efficiency, structural characterization, and mechanism exploration

Cited by 17 publications

References 52 publications

Extraction of Lead Ions and Partitioning Behavior in Aqueous Biphasic Systems Based on Polyethylene Glycol and Different Salts

Extraction of Lead Ions and Partitioning Behavior in Aqueous Biphasic Systems Based on Polyethylene Glycol and Different Salts

The possibility of using DES based on polypropylene glycol 425 and tetrabuthylammonium bromide in the extraction processes of transition metals

In vitro Antioxidant and Antibacterial Activities of Quinoa Flavonoids Extracted by Ethanol-Ammonium Sulfate Aqueous Two-Phase System

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Aqueous two-phase systems (polyethylene glycol + ammonia sulfate) for thallium extraction: Optimization of extraction efficiency, structural characterization, and mechanism exploration