A comparative study of the adsorption equilibrium of progesterone by a carbon black and a commercial activated carbon

Valenzuela-Calahorro, C.; Navarrete-Guijosa, Antonio; Stitou, Mostafa; Cuerda-Correa, Eduardo M.

doi:10.1016/j.apsusc.2006.11.047

Cited by 19 publications

(12 citation statements)

References 32 publications

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“…23,28,40 It takes the isosteric adsorption enthalpy change as a function of the adsorbate fractional loading:…”

Section: Effect Of Temperature and Thermodynamic Analysismentioning

confidence: 99%

Application of heterogeneous adsorbents in removal of dimethyl phthalate: Equilibrium and heat

Wu¹,

Xu²,

Zhang³

et al. 2010

AIChE Journal

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Aminated resin (NDA-101) and oxidized resin (NDA-702) were synthesized to remove Dimethyl phthalate (DMP) from the contaminated water. The equilibrium and heat properties in the course of adsorption process were examined and compared with two commercial heterogeneous adsorbents, namely an acrylic ester resin (Amberlite XAD-7) and a coal-based granular activated carbon (AC-750). The associated equilibrium isotherms can be well fitted by Freundlich equation and the adsorption capacities for DMP followed the order: NDA-702 [ NDA-101 [ AC-750 [ XAD-7. The surface of XAD-7 was demonstrated to be relatively homogeneous through surface energy heterogeneity analysis, offering the sole hydrogen bonding interaction. Contrarily, heterogeneous surface of oxidized resins NDA-702 and the aminated resins NDA-101 exhibited a promising adsorption capacity and affinity toward DMP probably derived by multiple hydrogen bonding, p-p stacking, and micropore filling interactions.

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“…23,28,40 It takes the isosteric adsorption enthalpy change as a function of the adsorbate fractional loading:…”

Section: Effect Of Temperature and Thermodynamic Analysismentioning

confidence: 99%

Application of heterogeneous adsorbents in removal of dimethyl phthalate: Equilibrium and heat

Wu¹,

Xu²,

Zhang³

et al. 2010

AIChE Journal

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show abstract

“…Do's model was used to illustrate the surface energy heterogeneity of the test adsorbents [20,27,38], which takes the isosteric adsorption enthalpy change as a function of the adsorbate fractional loading,…”

Section: Surface Energy Heterogeneity Of Resinsmentioning

confidence: 99%

Equilibrium and heat of adsorption of diethyl phthalate on heterogeneous adsorbents

Zhang

Pan

et al. 2008

Journal of Colloid and Interface Science

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“…Carbon black (CB) has emerged as an alternative nanomaterial although very little research has been focused on metal ion preconcentration for the development of highly sensitive analytical methods. This material has been widely consumed in automotive-related rubber product applications due to its reinforcing action 22 and also used as a versatile material as a catalyst 23 and conductive material. 24 The particle size of CB is partially in the nanometer range with average values between 20 and 300 nm according to different production process.…”

Section: Introductionmentioning

confidence: 99%

“…In addition to these elements, CB may contain small amounts of nitrogen and sulfur, depending upon the nature of hydrocarbons used in the manufacture. 22,26 This nanomaterial can be obtained from the partial combustion or thermal decomposition of hydrocarbons. The primary particles of CB exhibits a spherical shape and it presents a strong tendency to agglomerate, because of strong Van der Waals forces among the surface of the CB nanoparticles, affecting their dispersion in polar medium.…”

Section: Introductionmentioning

confidence: 99%

Solid Phase Extraction to On-Line Preconcentrate Trace Cadmium Using Chemically Modified Nano-Carbon Black with 3-Mercaptopropyltrimethoxysilane

Zappielo¹,

Nanicuacua²,

Santos³

et al. 2016

Journal of the Brazilian Chemical Society

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Carbon black (CB) grafted with 3-mercaptopropyltrimethoxysilane (3-MPTMS) was used as solid phase extractor for Cd 2+ in a flow injection system coupled to flame atomic absorption spectrometry (FAAS). The influence of pH, buffer concentration, preconcentration flow rate and eluent concentration on preconcentration of Cd 2+ were investigated by means of chemometric tools. The characterization of the adsorbent chemically modified was performed by Fourier transform infrared, scanning electron microscopy, energy dispersive X-ray spectroscopy, thermogravimetric analysis, Raman spectroscopy and textural analysis. To perform the on-line preconcentration, 20.0 mL of a pH 7.0 Cd 2+ solution at a flow rate of 4.0 mL min −1 was loaded through 30.0 mg of modified CB and then eluted with 1.0 mol L −1 HCl toward the FAAS instrument. The limits of detection and quantification were found to be 0.20 and 0.66 µg L −1 , respectively. Addition and recovery tests carried out in real samples (mineral, tap and saline waters, and cigarette sample) and the analysis of certified reference material (TORT-2, lobster hepatopancreas reference) attested the applicability of proposed method.

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A comparative study of the adsorption equilibrium of progesterone by a carbon black and a commercial activated carbon

Cited by 19 publications

References 32 publications

Application of heterogeneous adsorbents in removal of dimethyl phthalate: Equilibrium and heat

Application of heterogeneous adsorbents in removal of dimethyl phthalate: Equilibrium and heat

Equilibrium and heat of adsorption of diethyl phthalate on heterogeneous adsorbents

Solid Phase Extraction to On-Line Preconcentrate Trace Cadmium Using Chemically Modified Nano-Carbon Black with 3-Mercaptopropyltrimethoxysilane

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