Comparative adsorption performance of oxytetracycline and sulfamethoxazole antibiotic on powder activated carbon and graphene oxide

Hongsawat, Parnuch; Prarat, Panida

doi:10.1007/s11696-021-02024-9

Cited by 12 publications

(2 citation statements)

References 44 publications

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“…During this decade, many studies have been carried out on the adsorption of pharmaceuticals by activated carbon. (Hongsawat and Prarat 2022) (Pamphile et al 2019;Streit et al 2021;Jaria et al 2021;Lv et al 2021;Mirzaee et al 2021;Sellaoui et al 2021). Several types of residues, such as argon nutshells (El Mouchtari et al 2020a).…”

Section: Introductionmentioning

confidence: 99%

Optimization study of pharmaceuticals pollutants adsorption onto large surface area walnut shells activated carbon: Experimental design, Mechanism and DFT calculations

Yazid

Mersly

Mouchtari

et al. 2023

Preprint

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The increasing accumulation of pharmaceuticals in aquatic ecosystems can degrade the freshwater quality and endanger human health. In our work, we will discuss the removal of three pharmaceuticals that are most detected in aquatic environments: ketoprofen (KTP), diclofenac (DCF), and sulfamethoxazole (SMX). The adsorption process removed these toxic pollutants on a bio-sourced activated carbon (AC) prepared from walnut shells (Ws) from the Atlas El Kabir -Marrakech region. MEB, elemental mapping, EDX, FTIR, and BET surface area characterized the properties of prepared activated carbon. The activated carbon obtained had a high surface area (2256 m2/g). The experimental design methodology to optimize the adsorption process using the AZURAD® software. This approach was applied to remove three pharmaceutical pollutants in an aqueous solution by AC-Ws. The effect of four independent variables, including pH, the dose of AC-Ws, and temperature (T), on the PPs elimination efficiency was studied. Using the desirability function approach, commonly optimized conditions for adsorption of the three pharmaceuticals (DCF, SMX, and KTP) were assessed with pH 4, the dose of AC-Ws 0.28g/L, and a Temperature of 22 °C. At these conditions, the removal efficiency was 99.95%, 99.16%, and 99% for DCF, SMX, and KTP, respectively. Freundlich's model describes the adsorption of two pharmaceuticals efficiently: SMX and DCF, but the Langmuir model characterizes the adsorption of KTP. The pseudo-first-order model provided a satisfactory explanation for PPs kinetic adsorption over walnut shell adsorbent. The thermodynamic parameters revealed that the adsorption was spontaneous and exothermic for KTP and SMX, whereas DCF adsorbs randomly and endothermic on the activated carbon. The Boehm method determined the organic functions present on the surface of the adsorbent. The pharmaceutical adsorption mechanism over AC-Ws surface sites was further evaluated using the density functional theory (DFT) method. Therefore, the material prepared in this work possesses intrinsic characteristics that make it an excellent adsorbent to treat pharmaceutical contaminants in wastewater.

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Section: Introductionmentioning

confidence: 99%

Optimization study of pharmaceuticals pollutants adsorption onto large surface area walnut shells activated carbon: Experimental design, Mechanism and DFT calculations

Yazid

Mersly

Mouchtari

et al. 2023

Preprint

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“…Reduced graphene oxide exhibits a chip structure that comprises C atoms; although its adsorption mechanism is similar to that of active carbon, its adsorption performance is superior. Currently, several studies have confirmed that rGO exhibits great potential for absorbing different antibiotics; however, its experimental concentration range is far below the antibiotic content in natural water, thus resulting in a certain disconnect between research and practical application (Ai et al., 2019; Chen et al., 2014; Hongsawat & Prarat, 2022; Solís et al., 2021; Zhuang et al., 2018). Meanwhile, most of the existing studies have not considered the adsorption effect of trace antibiotics in the complex matrix environment of actual water bodies.…”

Section: Introductionmentioning

confidence: 99%

Adsorption characteristics of N‐rGO for multiple representative trace antibiotics in water

Zhang

2022

J of Env Quality

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Antibiotics have attracted considerable attention as pollutants; however, they have not been controlled because they cannot be effectively treated via conventional water treatment. In this study, nitrogen-doped reduced graphene oxide (N-rGO) was prepared, and its adsorption performance on multiple trace antibiotics in water was investigated by considering sulfamethoxazole, levofloxacin, clindamycin, tetracycline, penicillin, and chloramphenicol as target pollutants. The results demonstrated that the adsorption process was completed within 60 min at a removal rate exceeding 80%. The adsorption process was in line with the first-order kinetic equation and the Langmuir isothermal adsorption model, with a theoretical maximum adsorption capacity of 1,265.82 mg g −1 . Meanwhile, the effect of pH value was related to the structure of antibiotics. Simulation studies showed that anions and cations in natural water matrix did not inhibit the adsorption process, whereas humic acid adversely affected the adsorption effect. Characterizations revealed that the N-rGO surface was wrinkled with abundant and diverse oxygen-containing functional groups, which provided suitable conditions for efficient adsorption. The results indicated that N-rGO rapidly and effectively adsorbed trace antibiotics in water, thus providing a basis for constructing an adsorption-catalytic oxidation system. Overall, the proposed method is excellent for treating trace antibiotics in a water environment. INTRODUCTIONAntibiotics have made unique contributions to human health standards and social development; however, the harm caused by their overuse (e.g., antimicrobial resistance, persistent pollution, poor degradability) has attracted negative attention.

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Efficient removal of emerging pollutant oxytetracycline by cost‐effective biochar–hydroxyapatite composite

Tran,

Le,

Nguyen

et al. 2024

Asia-Pacific J Chem Eng

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Biochar (BC) and hydroxyapatite (HAp) are widely used in environmental remediation due to their high adsorption capacity, porous structure, large specific surface area, chemical stability, non‐toxicity, and low solubility. Combining BC and HAp is a green and effective strategy for creating new adsorbents (BCH) that have a synergistic impact on wastewater treatment. In this study, BCH composites derived from apatite ore and macadamia nut shells were synthesized by the wet impregnation method to remove oxytetracycline (OTC) from aqueous solutions. The BC‐HAp composite with a ratio of 10:1 (by weight) was the most effective material for removing OTC. The Redlich–Peterson model achieved the highest correlation coefficient among the four models tested (Freundlich, Langmuir, Temkin, and Redlich–Peterson). The maximum adsorption capacity calculated with the Langmuir isotherm was 49.59 mg g−1. It was found that the adsorption process was significantly affected by the solution pH. The bipolar form of the drug was found to be OTC±, and the adsorption was most effective in solutions with a pH of 6. The OTC adsorption dominant mechanisms on nanocomposites could be electrostatic attraction, hydrogen bonding formation, surface complexation, or ion exchange. Therefore, the BCH composite showed great potential for removing OTC pollutants in a cost‐effective, and environmentally friendly manner.

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Comparative adsorption performance of oxytetracycline and sulfamethoxazole antibiotic on powder activated carbon and graphene oxide

Cited by 12 publications

References 44 publications

Optimization study of pharmaceuticals pollutants adsorption onto large surface area walnut shells activated carbon: Experimental design, Mechanism and DFT calculations

Optimization study of pharmaceuticals pollutants adsorption onto large surface area walnut shells activated carbon: Experimental design, Mechanism and DFT calculations

Adsorption characteristics of N‐rGO for multiple representative trace antibiotics in water

Efficient removal of emerging pollutant oxytetracycline by cost‐effective biochar–hydroxyapatite composite

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