Kinetics, thermodynamic and chromatographic behaviour of the uranyl ions sorption from aqueous thiocyanate media onto polyurethane foams

Aminated polyethersulfone (PES-NH 2 ) has been synthesized and used with carboxylated activated carbon (AC-COOH) as an adsorbent using two different methods: in situ and ex situ techniques. The chemical modification of polyethersulfone (PES) to introduce -NH 2 functions was used to overcome the hydrophobicity of PES which maximizes its use in water treatment applications whereas applying AC-COOH to this polymer provides a promising effective method as an adsorbent-separation technique to remove dye pollutants from wastewater. The structure and characterization of aminated polyethersulfone with carboxylated activated carbon (PES-NH 2 -AC-COOH) were identified using proton nuclear magnetic resonance ( 1 H-NMR), Fourier transform infrared (FT-IR spectroscopy), X-ray diffraction (XRD), thermal analysis (TA), and a scanning electron microscopy (SEM). The performance of PES-NH 2 in situ and ex situ with AC-COOH was tested for the adsorption of cationic (methylene blue) and anionic (acid red 1) dyes from an aquatic environment. The results of the study showed a better thermal stability for the PES-NH 2 with 20% AC-COOH with both in situ and ex situ techniques as well as an excellent adsorption performance in comparison with the bare PES-NH 2 . The resultant polymers displayed significantly high adsorption rates for the acid red dye (60% and 68%) and methylene blue dye (61% and 88%) by PES-NH 2 with AC-COOH using in situ and ex situ techniques, respectively, in comparison with the control (PES-NH 2 ) which showed lower adsorption rates for both dyes (21% for acid red and 33% for methylene blue). Lastly, the study experimental measurements found the most suitable model to describe the kinetic behavior of the acid red dye adsorption by our developed polymer (by PES-NH 2 with AC-COOH) to be the pseudo-second-order kinetic model.

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“…The thermodynamic factors including ∆H, ∆S, and ∆G were determined by utilizing the below equations [20]:…”

Section: Thermodynamic Characteristics Of Acid Red Retention Onto Thementioning

confidence: 99%

Nanocomposite-Based Aminated Polyethersulfone and Carboxylate Activated Carbon for Environmental Application. A Real Sample Analysis

Alenazi

Hussein

Alamry

et al. 2018

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“…8) over the wide range of temperature range (293-323 K). The value of KC decreased on increasing temperature, revealing that, the retention process of [BiI4] -species onto the sorbents is an exothermic process [21,22]. The numerical values of ΔH, ΔS, and ΔG calculated from the slope and intercept of the linear plot Fig.…”

Section: Thermodynamic Characteristics Of Bismuth (ііі) Retention Ontmentioning

confidence: 99%

“…Thus, several liquid solid separation involving PUFs methods have been employed successfully for separation and sensitive determination of trace and ultra trace levels of metal ions including bismuth (III) [19][20][21][22][23][24][25][26][27][28][29]. The membrane like structure and the available surface area of the PUFs make it a suitable stationary phase and a column filling material [25,27].…”

Section: Introductionmentioning

confidence: 99%

Fast, Selective Removal and Determination of Total Bismuth (III) and (V) in Water by Procaine Hydrochloride Immobilized Polyurethane Foam Packed Column Prior to Inductively Coupled Plasma - Optical Emission Spectrometry

El-Shahawi¹,

Al-Sibaai²,

Al-Saidi³

et al. 2012

Polyurethane

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“…Some of these methods are not precise, expensive, and nonselective and require careful experimental conditions and considerable time consuming. The potentialities of PUFs for trace analysis and speciation of metal ions are promising [34][35][36][37][38][39][40][41][42]. PUFs sorbent represents one of the most are effective sorbent for metal speciation in water [36,38].…”

mentioning

confidence: 99%

Kinetics and thermodynamic characteristics of cadmium(II) sorption from water using procaine hydrochloride physically impregnated polyurethane foam

El-Shahawi

Alwael

Arafat

et al. 2015

Journal of Industrial and Engineering Chemistry

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Kinetics, thermodynamic and chromatographic behaviour of the uranyl ions sorption from aqueous thiocyanate media onto polyurethane foams

Cited by 32 publications

References 33 publications

Nanocomposite-Based Aminated Polyethersulfone and Carboxylate Activated Carbon for Environmental Application. A Real Sample Analysis

Nanocomposite-Based Aminated Polyethersulfone and Carboxylate Activated Carbon for Environmental Application. A Real Sample Analysis

Fast, Selective Removal and Determination of Total Bismuth (III) and (V) in Water by Procaine Hydrochloride Immobilized Polyurethane Foam Packed Column Prior to Inductively Coupled Plasma - Optical Emission Spectrometry

Kinetics and thermodynamic characteristics of cadmium(II) sorption from water using procaine hydrochloride physically impregnated polyurethane foam

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