Solid–liquid phase equilibrium of glyphosate in selected solvents

Jia, Dongmei; Wang, Lisheng; Li, Changhai; Wang, Xinxin

doi:10.1016/j.fluid.2012.05.003

Cited by 25 publications

(13 citation statements)

References 33 publications

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“…It was likely caused by the salting-out effect that the solubility of glyphosate decreased with increasing the NaCl concentration. 31 With 18% NaCl coexisting, the adsorption capacity of D201Cu-L, D201Cu-M, and D201Cu-H to glyphosate was 113.7, 132.1, and 142.6 mg/g and had a relative increase of 190.1%, 254.3%, and 290.5% than that of D201, repectively. It meant that D201Cu resins had a better adsorption selectivity than D201.…”

Section: Resultsmentioning

confidence: 92%

“…When the NaCl concentration increased from 3.0% to 18.0% (wt %), the adsorption capacity of D201Cu resins to glyphosate gradually increased. It was likely caused by the salting-out effect that the solubility of glyphosate decreased with increasing the NaCl concentration . With 18% NaCl coexisting, the adsorption capacity of D201Cu-L, D201Cu-M, and D201Cu-H to glyphosate was 113.7, 132.1, and 142.6 mg/g and had a relative increase of 190.1%, 254.3%, and 290.5% than that of D201, repectively.…”

Section: Resultsmentioning

confidence: 98%

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Removal of Glyphosate from Aqueous Solution Using Nanosized Copper Hydroxide Modified Resin: Equilibrium Isotherms and Kinetics

et al. 2017

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To remove glyphosate from water, nanosized copper hydroxide modified resin (D201Cu) was synthesized and characterized. The influence of NaCl concentration, temperature, pH, time, humid acid, and fulvic acid on glyphosate adsorption onto D201Cu resins were fully investigated. Glyphosate uptake on D201Cu was 113.7 mg/g in the presence 18% NaCl. The adsorption isotherms and kinetic data fitted well to the Langmuir model and pseudo-second-order model, respectively. In NaOH and NaCl mixed solution, the D201Cu regeneration efficiency can be 90% after five cycles. On the basis of the adsorption results, the schematic diagrams of adsorption mechanism of glyphosate onto D201Cu resins were proposed.

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Section: Resultsmentioning

confidence: 92%

Section: Resultsmentioning

confidence: 98%

Removal of Glyphosate from Aqueous Solution Using Nanosized Copper Hydroxide Modified Resin: Equilibrium Isotherms and Kinetics

et al. 2017

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“…20 The solubility behaviors are affected not only by the polarities of the solvents but also by the intermolecular interaction, and the ability to form a hydrogen bond between the solvent and PANDE. 21 The solubility values in tetrahydrofuran and acetone are greater than those in the methanol, which indicates the property of the proton donor of the NH group in PANDE. Meanwhile, the value in methanol is greater than that in toluene at high temperature, which may be the reason for hydrogen bonds between methanol and PANDE molecules.…”

Section: ■ Results and Discussionmentioning

confidence: 98%

Solubilities of Phosphoramidic Acid, N-(phenylmethyl)-, Diphenyl Ester in Selected Solvents

Wang

et al. 2015

J. Chem. Eng. Data

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Phosphoramidic acid, N-(phenylmethyl)-, diphenyl ester (PANDE) was synthesized, and its thermostability was measured by thermogravimetric analysis. The melting temperature and the fusion enthalpy of PANDE were evaluated by a differential scanning calorimeter. The solubilities of PANDE in chloroform, tertrahydrofuran, dichloromethane, acetone, methyl acetate, ethyl acetate, acetonitrile, methanol, and toluene were measured by a gravimetric method at different temperatures. The solubilities of PANDE in different solvents at low temperatures are in the order of chloroform > tetrahydrofuran > dichloromethane > acetone > methyl acetate > ethyl acetate > acetonitrile > methanol > toluene. At higher temperatures the order is the same except that acetonitrile now becomes the least soluble. The solubility data of PANDE in nine selected solvents were well fitted by the Wilson, nonrandom two-liquid (NRTL), and universal quasichemical equations. The Wilson model and the NRTL model show better agreement in general. Finally, the solubility parameters of PANDE were evaluated by the Scatchard–Hildebrand model, and meanwhile, the standard dissolution enthalpy, the standard dissolution entropy, and the standard molar Gibbs energy of PANDE in the selected solvents were also calculated by the van’t Hoff model and the Gibbs–Helmholtz equation. The results show that the dissolution process is endothermic and entropy-driven.

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“…The experimental setup for solubility measurements has been described in our previous work . The solubility measurements were performed with a 120 mL glass jacketed equilibrium cell which was equipped with a magnetic stirring device.…”

Section: Methodsmentioning

confidence: 99%

“…The experimental setup for solubility measurements has been described in our previous work. 11 The solubility measurements were performed with a 120 mL glass jacketed equilibrium cell which was equipped with a magnetic stirring device. A thermostat device (type 50 L, Shanghai Laboratory Instrument Works Co., Ltd., China) was used to maintain a set temperature with a temperature uncertainty of ±0.05 K. The mass measurements were achieved by an analytical balance (type XS105, Mettler Toledo Inc., USA) with an uncertainty of ±0.02 mg.…”

Section: Solubility Measurementmentioning

confidence: 99%

Measurement and Correlation of Solubility of Resorcinol Bis(cyclic 2,2-dimethyl-1,3-propanediol phosphate) in Selected Solvents from T = 293.15 to 333.15 K

et al. 2017

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A phosphorus flame retardant named resorcinol bis(cyclic 2,2-dimethyl-1,3-propanediol phosphate) (RCDMPP) was synthesized and characterized by highperformance liquid chromatography (HPLC), elemental analysis (EA), Fourier transform infrared spectroscopy (FTIR), mass spectra (MS), and nuclear magnetic resonance (NMR). Its thermal stability was evaluated via thermogravimetric analysis (TGA), and the fusion enthalpy and melting point of RCDMPP were detected by differential scanning calorimetry (DSC). The solubilities of RCDMPP in selected solvents at T = 293.15 to 333.15 K and atmospheric pressure were measured via a static-analytic method. The solubility data were correlated with modified Apelblat, Scatchard−Hildebrand, Buchowski-Ksiazczak (λh), nonrandom two liquid (NRTL), Wilson, and universal quasichemical (UNIQUAC) equations. The calculated results obtained from these models showed good agreement with the experimental data, and the NRTL, Wilson, and UNIQUAC models give better correlation results compared with modified Apelblat and λh models. The solubility parameter of RCDMPP was calculated by use of the Scatchard−Hildebrand methodology.

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Solid–liquid phase equilibrium of glyphosate in selected solvents

Cited by 25 publications

References 33 publications

Removal of Glyphosate from Aqueous Solution Using Nanosized Copper Hydroxide Modified Resin: Equilibrium Isotherms and Kinetics

Removal of Glyphosate from Aqueous Solution Using Nanosized Copper Hydroxide Modified Resin: Equilibrium Isotherms and Kinetics

Solubilities of Phosphoramidic Acid, N-(phenylmethyl)-, Diphenyl Ester in Selected Solvents

Measurement and Correlation of Solubility of Resorcinol Bis(cyclic 2,2-dimethyl-1,3-propanediol phosphate) in Selected Solvents from T = 293.15 to 333.15 K

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