Nylon 6 electrospun nanofibers mat as effective sorbent for the removal of estrogens: kinetic and thermodynamic studies

Qi, Fei-Fei; Cao, Yang; Wang, Min; Fei, Rong; Xu, Qian

doi:10.1186/1556-276x-9-353

Cited by 27 publications

(13 citation statements)

References 28 publications

(37 reference statements)

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“…From the plot, the value of ∆rHo was 107 kJ/mole with the positive value implied endothermic reaction involved during the process of adsorption. Thus, the protein adsorption is predominantly driven by chemisorption as the value of ∆rHo was between 40-120 kJ/mole, rather than common physical adsorption [13], [11]. The results were supported from the characterization of functional groups by using FTIR-ATR ( Figure 4).…”

Section: Resultsmentioning

confidence: 69%

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Thermodynamic Studies of Bovine Serum Albumin (BSA) Adsorption on Nylon Membrane

Ideris¹,

Roslan²

2019

IJET

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The aim of this study was to investigate the nylon membrane’s characteristics and thermodynamic aspects for adsorption of Bovine Serum Albumin (BSA) as a model protein on nylon membrane. The morphology characteristics analyzed by FESEM and wetting and weighting technique showed the nylon membrane possessed micro-pore size (0.159±0.039 µm) with high porosity (74.2820±0.0411 %) respectively. Thermodynamic studies indicated that the adsorption reaction was endothermic with positive value of standard enthalpy (∆rHθ = 107.7 kJ/mole) and dominated by chemical adsorption. The results were supported with the analysis of functional groups of the nylon membrane with FTIR-ATR. Bands corresponding to the NH bonds stretching were generally detected in the 3500-3100 cm-1 range. The existence of C=O stretching vibration of carbonyl group was further confirmed with the observation of peak at 1632. 42 cm-1. The water contact angle analysis showed the hydrophilicity nature of nylon membrane with contact angle of 55.6°. These findings are expected to be used in the modification of nylon membrane for an optimum adsorption of protein.

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Section: Resultsmentioning

confidence: 69%

“…where C e is the protein concentration at equilibrium, R is the gas constant (8.314 J/mol.K) and T is the temperature (K) [11].…”

Section: Protein Adsorption and Thermodynamic Studiesmentioning

confidence: 99%

Thermodynamic Studies of Bovine Serum Albumin (BSA) Adsorption on Nylon Membrane

Ideris¹,

Roslan²

2019

IJET

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“…The expressions of the pseudo-rst-order kinetic eqn (1) and the pseudo-second-order kinetic eqn (2) are as follows: [16][17][18] log(q e À q t ) ¼ log q e À k 1 t/2.303…”

Section: Determining the Kinetics Of Adsorptionmentioning

confidence: 99%

Polystyrene nanofibers as an effective sorbent for the adsorption of clonazepam: kinetic and thermodynamic studies

Wang

et al. 2022

RSC Adv.

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“…The percentage removal of each EH at a given time (t) was measured using the expression shown in Eq. (2) as follows (Al-Khateeb et al 2014a;Qi et al 2014):…”

Section: Batch Adsorption Tests Of Wcenfsmentioning

confidence: 99%

Adsorption of Estrogenic Hormones in Aqueous Solution Using Electrospun Nanofibers From Waste Cigarette Butts: Kinetics, Mechanism, and Reusability

Yasir

Šopík

Patwa

et al. 2021

Preprint

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This study emphasizes rapid and simultaneous adsorptive removal of estrogenic hormones (EHs): estrone (E1), 17β-estradiol (E2), 17α-ethinylestradiol (EE2), and estriol (E3) from wastewater using recycled waste cigarette electrospun nanofibers (WCENFs). The nanofibers exhibited a small diameter (196±65 nm) and large surface area (18.05 m 2 /g), along with a strong affinity towards all EHs by adsorption due to abundant hydrogen bonding interactions. A one-step high-performance liquid chromatography technique was developed to detect each EH present in the solution simultaneously. The adsorption kinetics helps select optimum conditions for the large-scale removal process, so experimental data using pseudo-first-order, pseudo-second-order, intra-particle diffusion, Elovich, and fractional power models were fitted. It was found that E1, E2, and EE2 followed pseudo-second-order kinetics while E3 followed pseudo-first-order kinetic models. The total adsorption capacity on WCENFs was determined to be 2.14 mg/g, whereas the individual adsorption capacities of E1, E2, EE2, and E3 were found to be 0.551, 0.532, 0.687, and 0.369 mg/g, respectively. The percentage efficiency of WCENFs was highest with EE2 ~64.3% and least with E3 ~34.6%. Adsorption-desorption studies revealed that WCENFs could repeatedly be used four times. The reported results indicate a significant potential of WCENFs to be an effective sorbent and portable filter for simultaneous estrogenic hormone removal. WCENFs filter is a suitable alternative to commercial Cellulose acetate filters.

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Nylon 6 electrospun nanofibers mat as effective sorbent for the removal of estrogens: kinetic and thermodynamic studies

Cited by 27 publications

References 28 publications

Thermodynamic Studies of Bovine Serum Albumin (BSA) Adsorption on Nylon Membrane

Thermodynamic Studies of Bovine Serum Albumin (BSA) Adsorption on Nylon Membrane

Polystyrene nanofibers as an effective sorbent for the adsorption of clonazepam: kinetic and thermodynamic studies

Adsorption of Estrogenic Hormones in Aqueous Solution Using Electrospun Nanofibers From Waste Cigarette Butts: Kinetics, Mechanism, and Reusability

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