Enhanced removal of diclofenac by an organohalloysite intercalated via a novel route: Performance and mechanism

Salaa, Fahima; Bendenia, Souhila; Lecomte‐Nana, Gisèle Laure; Khelifa, Amine

doi:10.1016/j.cej.2020.125226

Cited by 30 publications

(8 citation statements)

References 47 publications

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“…Therefore, the hydrophobicity induced by activated carbon is greater than the CEC of clay. This is an important factor since it increases the surface area of GM [167][168][169], the clay is more hydrophobic which yields a great capacity to retain the TC molecule, hence the difference between the adsorbed amount of ATMa clay and GM.…”

Section: Adsorption Isothermsmentioning

confidence: 99%

Tetracycline Removal from Water by Adsorption on Geomaterial, Activated Carbon and Clay Adsorbents

Hamoudi

Hamdi

Brendlé

2021

Ecological Chemistry and Engineering S

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The use of antibiotics for breeding and for humans increased considerably in recent years, as a dietary supplement to enhance animal growth. This frequent use leads to the detection of residues in water and wastewater. Thus, the emergence of new strains of bacteria resistant to these antibiotics and, can lead to incurable diseases of livestock, and can lead to a possible transmission of these strains to humans. The purpose of this work is to develop new materials based on treated Maghnia clay, activated carbon, cement, and PVA polymer, named geomaterials. These materials were intended for the containment of hazardous wastes in landfills. The removal of tetracycline from aqueous solution was tested by adsorption onto synthesised geomaterials and their mineral constituents. Adsorption kinetics revealed that tetracycline was rapidly retained by GM and ATMa. This was confirmed by the relatively short equilibrium time of 30 min. The pseudo-second-order and intraparticle models well fitted the adsorption kinetic of the TC-adsorbent studied systems. It was noticed that the adsorption kinetic passes through several mechanisms, was demonstrated by the multi-linearity on the plot of qt against the square root of t. The adsorption capacity (Qa ) of TC onto GM is pH-dependent. Indeed, Qa reaches a maximum value (Qa = 12.58 mg ∙ g–1 at a very acidic pH of 2, then the adsorbed amount decreases to reach a minimum value at pH of 8, and for basic pHsQa increases up to 10 mg ∙ g–1.

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Section: Adsorption Isothermsmentioning

confidence: 99%

Tetracycline Removal from Water by Adsorption on Geomaterial, Activated Carbon and Clay Adsorbents

Hamoudi

Hamdi

Brendlé

2021

Ecological Chemistry and Engineering S

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“…The intercalation of organic compounds such as CTAB into the interlayer space of the clay structures allows the synthesis of organoclay nanocomposites. The incorporation of CTAB in the interlayer spaces of these materials led to highly efficient DCF adsorbing materials [262,263]. A similar approach was reported by Krajisnik, who described cetylpyridinium modified natural zeolites for DCF adsorption [264].…”

Section: Effective Adsorbents For Dcf Removalmentioning

confidence: 62%

Monitoring and Management of Anions in Polluted Aqua Systems: Case Studies on Nitrate, Chromate, Pertechnetate and Diclofenac

Ahmed

Moisy

Banerji

et al. 2021

Environmental Contamination Remediation and Management

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“…The inorganic pollutants included potentially toxic metal(loid)s ( i.e ., Cd, Ni, Cu, Al, Zn, Tl, Cr, Pb, and As), 10,15,33‐47 bromate, 48 ammonium, 28 and phosphate 49,50 . The list of organic pollutants is composed of methylene blue dye, 51‐53 malachite green dye, 54 remazol black B dye, 55,56 brilliant green dye, 57 brilliant yellow dye, 58 methyl orange dye, 59 acid blue 25 dye, 60,61 crystal violet dye, 62‐64 basic brown 1 dye, 65 acridine orange dye, 66 reactive orange 16 dye, 67 procion red MX 3B dye, 68 aniline, 44 sulfamethazine, 69 ceftazidime, 70 diclofenac, 71,72 pyridine, 73 paracetamol, 74 nimesulide, 74 norfloxacin, 75 phenol, 76 2‐nitrophenol, 77 imipramine, 78 quinoline, 79 2‐picoline, 80 and 4‐nitroaniline 81 …”

Section: Data Collection and Validitymentioning

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

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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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Enhanced removal of diclofenac by an organohalloysite intercalated via a novel route: Performance and mechanism

Cited by 30 publications

References 47 publications

Tetracycline Removal from Water by Adsorption on Geomaterial, Activated Carbon and Clay Adsorbents

Tetracycline Removal from Water by Adsorption on Geomaterial, Activated Carbon and Clay Adsorbents

Monitoring and Management of Anions in Polluted Aqua Systems: Case Studies on Nitrate, Chromate, Pertechnetate and Diclofenac

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

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