Application of mesoporous zeolite Socony Mobil-5 (ZSM-5) as an adsorbent material for the removal of naphthenic acid present in oil-produced water

Migliorin, Lorenzo S.; Franco, Dison S.P.; Knani, Salah; Georgin, Jordana; Vieira, Larissa A.; Monteiro, Maiko R.; Jahn, Sérgío Luiz; Dotto, Guilherme L.

doi:10.1016/j.micromeso.2022.112216

Cited by 13 publications

(3 citation statements)

References 48 publications

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“…This idea was initially published by Lima and coworkers 20 and then applied by other authors. 19,32 Therefore, no conflict of units will occur if K e (RP) is used as an equilibrium constant of the model K Model in Eqn (15).…”

Section: And Tran 18 K Omentioning

confidence: 99%

“…A simple modification as Eqn (15) is used to convert the unit of the constant a RP from (L mol −1 ) g to (L mol −1 ; K e(RP) ), resulting in a unit like that of the Langmuir constant K L (L mol −1 ). This idea was initially published by Lima and coworkers 20 and then applied by other authors 19,32 . Therefore, no conflict of units will occur if K e(RP) is used as an equilibrium constant of the model K Model in Eqn (15).…”

Section: Introductionmentioning

confidence: 99%

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Revisiting the calculation of thermodynamic parameters of adsorption processes from the modified equilibrium constant of the Redlich–Peterson model

Tran

Ninh

Lima

et al. 2022

J of Chemical Tech & Biotech

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BACKGROUND:The adsorption equilibrium constant of the Langmuir model (K L ; L mol −1 ) has been applied as the standard thermodynamic equilibrium constant, K o Eq , for calculating the thermodynamic parameters (ΔG°, ΔS°, and ΔH°) of an adsorption processes by using the van't Hoff equation. Some authors have (directly and indirectly) applied the constant K RP (L kg −1 ) of the Redlich-Peterson model for such calculations. However, this is an incorrect application because the unit of K RP is not suitable (it is not an equilibrium constant). Its new adsorption equilibrium constant, K e(RP) (L mol −1 ), was revisited based on a RP (L mol −1 ) g . In the literature, there is still uncertainty regarding the application of a RP as K o Eq for calculating the thermodynamic parameters. Therefore, the present study aimed to evaluate the feasibility of applying K e(RP) to calculate thermodynamic parameters using available literature data. The thermodynamic parameters obtained from K e(RP) were compared to those from K L . A case study using a biosorbent for adsorbing methylene blue dye at different temperatures was carried out to re-verify the feasibility. RESULTS:The Redlich-Peterson model is only valid when its exponent is in a strict range (0 ≤ g ≤ 1). The Redlich-Peterson model (68%; 227 observations collected from 52 published papers) describes adsorption equilibrium datasets better than the Langmuir model. The negative ΔG°values obtained based on K e(RP) (11.7-47.6 kJ mol −1 ) were significantly different (p = 2.98 × 10 −12 ) from those on K L (12.2-40.8 kJ mol −1 ). The magnitudes of ΔH°obtained based on K e(RP) were significantly different (P < 0.05) to those on K L ; however, such differences did not affect conclusions drawn on dominant mechanism adsorption (physical or chemical). The magnitude of ΔH°for chemisorption (involved in covalent bonds) is higher than 200 kJ mol −1 . For the case study, the ΔH°(kJ mol −1 ) and ΔS°[J mol −1 × K −1 ] values calculated based on K e(RP) (11.65 and 111.5) were like those on K L (11.34 and 110.4, respectively). CONCLUSION: A new equilibrium constant, K e(RP) (L mol −1 ), of the Redlich-Peterson model can be applied as K o Eq for calculating the thermodynamic parameters (ΔG°, ΔS°, and ΔH°) of an adsorption processes under specific cases (i.e., F, H, and L-shaped adsorption isotherms). Most of the adsorption processes (98%) involve physical adsorption.

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Section: And Tran 18 K Omentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Revisiting the calculation of thermodynamic parameters of adsorption processes from the modified equilibrium constant of the Redlich–Peterson model

Tran

Ninh

Lima

et al. 2022

J of Chemical Tech & Biotech

View full text Add to dashboard Cite

show abstract

“…ZSM-5 molecular sieves have also many applications as environmentally friendly inorganic adsorbent materials. Lorenzo S. et al 26 synthesized ME-ZSM-5 and applied it in the removal of naphthenic acid from oilfield-produced water. The best adsorption capacity of 195 mg g −1 was achieved when the adsorbent dosage was 3 g L −1 , and pH was 4.…”

Section: Introductionmentioning

confidence: 99%

Treatment of glyphosate wastewater by Zr-amino bi-functionalized worm-like mesoporous silica absorbents

Xia

et al. 2023

New J. Chem.

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Adsorptive features of cyclohexane carboxylic naphthenic acid on a novel cross-linked polymer developed from spent coffee grounds

Vieira,

Fuhr,

Lütke

et al. 2024

Environ Sci Pollut Res

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Application of mesoporous zeolite Socony Mobil-5 (ZSM-5) as an adsorbent material for the removal of naphthenic acid present in oil-produced water

Cited by 13 publications

References 48 publications

Revisiting the calculation of thermodynamic parameters of adsorption processes from the modified equilibrium constant of the Redlich–Peterson model

Revisiting the calculation of thermodynamic parameters of adsorption processes from the modified equilibrium constant of the Redlich–Peterson model

Treatment of glyphosate wastewater by Zr-amino bi-functionalized worm-like mesoporous silica absorbents

Adsorptive features of cyclohexane carboxylic naphthenic acid on a novel cross-linked polymer developed from spent coffee grounds

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