Adsorption of ciprofloxacin antibiotic on materials prepared from Moroccan oil shales

Chafyq, El.Hassan; Legrouri, K.; Aghrouch, Mohamed; Oumam, Mina; Mansouri, Said; Khouya, El Hassane

doi:10.1016/j.cplett.2021.138707

Cited by 14 publications

(4 citation statements)

References 53 publications

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“…where Q e and Q t (both in mg g À1 ) are the adsorbed amounts at equilibrium and at time t, respectively, and k 1 (min À1 ) is the adsorption rate constant of the pseudo-first-order model. The pseudo-second-order expressed by the following equation (Chafyq et al 2021a):…”

Section: Kinetic Modelsmentioning

confidence: 99%

Efficient removal of crystal violet dye from aqueous solutions using sodium hydroxide-modified avocado shells: kinetics and isotherms modeling

Haki

Imgharn

Aarab

et al. 2021

Water Science and Technology

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The main objective of this study is to optimize a new composite for the depollution of contaminated water. The sodium hydroxide-modified Avocado shells (NaOH-AS) were firstly prepared, characterized by field-emission-scanning-electron-microscopy (FE-SEM), X-ray energy dispersive spectroscopy (EDS) and Fourier transforms infrared (FT-IR) spectroscopy, and applied for efficient removal of Crystal violet dye (CV) in wastewater. In addition, the adsorption in a batch system of CV dye on the NaOH-AS material was studied. Therefore, we accomplished a parametric study of the adsorption by studying the effect of several important parameters on the decolorizing power of the used material, namely, initial pH, contact time, initial CV dye concentration, temperature, and the ionic strength effect on the CV dye adsorption process were systematically assessed. The highest adsorption efficiency of CV dye (>96.9%) by NaOH-AS was obtained at pH >8. The pseudo-second-order kinetic model gave the best description of the adsorption kinetic of CV dye on the AS and NaOH-AS adsorbents. Besides, the mass transfer of CV dye molecules from the solution to the adsorbent surface occurred in three sequential stages (boundary layer diffusion, intraparticle diffusion and adsorption equilibrium). The adsorption isotherm data were best fitted with the Freundlich model. The adsorption capacity of AS increased from 135.88 to 179.80 mg g−1 after treatment by 1 M NaOH. The thermodynamic study showed that CV dye adsorption onto NaOH-AS was an exothermic and feasible process. The electrostatic interactions acted as the only forces governing the CV adsorption mechanism. The NaOH-AS demonstrated a satisfactory reusability. Therefore, we can state that the as-developed NaOH-AS material has a potential application prospect as an efficient adsorbent for CV dye from wastewaters.

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Section: Kinetic Modelsmentioning

confidence: 99%

Efficient removal of crystal violet dye from aqueous solutions using sodium hydroxide-modified avocado shells: kinetics and isotherms modeling

Haki

Imgharn

Aarab

et al. 2021

Water Science and Technology

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“…Recent research progress on semicoke adsorption applications is well summarized in a review article by Lartey-Young and Ma [1]. Different studies have shown that semi-coke can be used for removal of gaseous pollutants from air [8][9][10][11] as well as inorganic ions [12][13][14] and organic compounds [15] from aqueous solutions. In addition, oil shale semi-cokes have been tested to remove dyes from aqueous solutions [14,16,17].…”

Section: Introductionmentioning

confidence: 99%

Characterization of oil shale kerogen semi-coke and its application to remove chemical pollutants from aqueous solutions

Lees¹,

Jõul²,

Pikkor³

et al. 2023

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An alternative adsorbent from oil shale semi-coke material for removing chemical pollutants from aqueous solutions was investigated. For this purpose, enriched oil shales with different kerogen contents (57, 79 and 90 wt%) were pyrolyzed in nitrogen atmosphere at 600-900 °C at a heating rate of 10 °C/min and a hold time of 60 min. The surface properties of semicokes, namely Brunauer-Emmett-Teller (BET) surface area, pore volume and pore size distribution (PSD), were determined by nitrogen adsorption. The studied semi-cokes were found to be micro-and mesoporous. The highest semicoke BET surface area, 160 m 2 /g, was obtained at a pyrolysis temperature of 700 °C, which corresponds to 519 m 2 /g of char, excluding the minerals. This porous carbon material was tested as an adsorbent to remove pesticides and phenolic compounds from aqueous solutions. Three kinds of phenolic compounds (resorcinol, 5-methylresorcinol, 4-nitrophenol) and three kinds of organophosphorus pesticides (dimethoate, parathion, malathion) were tested to study the adsorption on the semi-coke material. Different contact times were tested for the adsorption of the compounds of interest. The results showed that with an adsorbent dosage of 10 mg/mL over 98% of pesticides were removed from the solution within 30 min at an initial concentration of 100 µM (corresponding to 23-33 mg/L depending on the compound). More than 97% of the phenolic compounds were adsorbed from water within six hours at an initial concentration of 10 µM (1.1-1.4 mg/L).

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“…Antibiotic wastewater pollution has become very serious [ 11 ], which may bring significant harm to human health and the ecosystem [ 12 ], so it is urgent to explore efficient methods to treat ciprofloxacin wastewater [ 13 ]. At present, many treatment technologies have been developed, such as adsorption [ 14 ], biodegradation [ 15 ], advanced oxidation [ 16 ], etc. Heterogeneous catalysis (one of the advanced oxidation processes), as an efficient and environmentally friendly technology, has attracted much attention.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of CuO/GO-DE Catalyst and Its Catalytic Properties and Mechanism on Ciprofloxacin Degradation

Zhang

et al. 2022

Nanomaterials

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A new catalyst, copper oxide/graphene oxide–diatomaceous earth (CuO/GO-DE), was prepared by the ultrasonic impregnation method. The optimal conditions for catalyst preparation were explored, and its structure and morphology were characterized by BET, XRD, SEM, TEM, FTIR, Raman and XPS. By taking ciprofloxacin as the target pollutant, the performance and reusability of CuO/GO-DE to degrade antibiotic wastewater was evaluated, and the optimal operating conditions were obtained. The main oxidizing substances in the catalytic system under different pH conditions were analyzed, as well as the synergistic catalytic oxidation mechanism. The intermediate products of ciprofloxacin degradation were identified by LC-MS, and the possible degradation process of ciprofloxacin was proposed.

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Adsorption of ciprofloxacin antibiotic on materials prepared from Moroccan oil shales

Cited by 14 publications

References 53 publications

Efficient removal of crystal violet dye from aqueous solutions using sodium hydroxide-modified avocado shells: kinetics and isotherms modeling

Efficient removal of crystal violet dye from aqueous solutions using sodium hydroxide-modified avocado shells: kinetics and isotherms modeling

Characterization of oil shale kerogen semi-coke and its application to remove chemical pollutants from aqueous solutions

Synthesis of CuO/GO-DE Catalyst and Its Catalytic Properties and Mechanism on Ciprofloxacin Degradation

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