Removal of a non-steroidal anti-inflammatory by adsorption on polypyrrole/multiwalled carbon nanotube composite—Study of kinetics and equilibrium in aqueous medium

Pires, Bruna Carneiro; Nascimento, Tienne Aparecida do; Dutra, Flávia Barbosa da Silva; Borges, Keyller Bastos

doi:10.1016/j.colsurfa.2019.123583

Cited by 29 publications

(7 citation statements)

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“…Moreover, the PPy has positively charged nitrogen atoms in their structures, being able to remove anionic contaminants from aqueous solution through ion-exchange, electrostatic and p-p interaction. [16][17][18] Although extensive interest and increasing applications of PPy, the tendency of selfaggregation, poor processability, difficulty in porosity control, and relatively low adsorption capacity are still the main limitedfactors in the removal of contaminants from water. 11,19 Accordingly, the preparation of PPy based or modied composites can overcome the main limitations, and be considered as a promising way to improve its performance.…”

Section: Introductionmentioning

confidence: 99%

Facile preparation of a polypyrrole modified Chinese yam peel-based adsorbent: characterization, performance, and application in removal of Congo red dye

et al. 2022

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Section: Introductionmentioning

confidence: 99%

Facile preparation of a polypyrrole modified Chinese yam peel-based adsorbent: characterization, performance, and application in removal of Congo red dye

et al. 2022

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“…The increased diclofenac concentration reduces the ratio of the adsorbent’s surface active sites to the total diclofenac molecules. The excessive diclofenac molecules cannot interact with the adsorbent and as such, they are not removed from the solution, and thus, the removal efficiency is decreased. , On the other hand, increasing the contact time leads to higher removal efficiency. The longer contact time allows more time for the adsorbent sites to react with the diclofenac molecules.…”

Section: Resultsmentioning

confidence: 99%

Synthesis and Characterization of a Magnetic Carbon Nanofiber Derived from Bacterial Cellulose for the Removal of Diclofenac from Water

et al. 2022

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Engineering and synthesis of novel materials are vital for removing emerging pollutants, such as pharmaceuticals from contaminated water. In this study, a magnetic carbon nanofiber (MCF) fabricated from bacterial cellulose was tested for the adsorption of diclofenac from water. The physical and chemical properties of the synthesized adsorbent were examined by field emission scanning electron microscopy (FESEM), field emission transmission electron microscopy (FETEM), X-ray diffraction (XRD), Brunauer–Emmett–Teller (BET) analysis, energy-dispersive X-ray spectroscopy (EDS), a vibrating sample magnetometer (VSM), Raman spectroscopy, and Fourier transform infrared (FTIR) spectroscopy. The characterization results showed that the MCF is a carbon nanofiber with a three-dimensional interconnect network, forming a porous material (mesopores and macropores) with a specific surface area of 222.3 m2/g. The removal of diclofenac (10 mg/L) by the MCF (0.75 g/L) was efficient (93.2%) and fast (in 20 min). According to the Langmuir isotherm model fitting, the maximum adsorption capacity of the MCF was 43.56 mg/g. Moreover, continuous adsorption of diclofenac onto MCF was investigated in a fixed-bed column, and the maximum adsorption capacity was found to be 67 mg/g. The finding of this research revealed that the MCF could be a promising adsorbent used to remove diclofenac from water, while it can be easily recovered by magnetic separation.

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“…They reported a maximum adsorption capacity of 121.95 mg/g for their investigated dye. Further, Ppy-MWCNT nanocomposite was used as an adsorbent for the removal of a non-steroid anti-inflammatory drug (potassium diclofenac) from an aqueous solution [126]. They reported that the modification of MWCNT by Ppy has significantly improved the maximum adsorption capacity and that the thermodynamic parameters suggested endothermic and favorable adsorption.…”

Section: Polypyrrole-based Nanocomposites As Adsorbentsmentioning

confidence: 99%

Conductive Polymers and Their Nanocomposites as Adsorbents in Environmental Applications

et al. 2021

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Proper treatment and disposal of industrial pollutants of all kinds are a global issue that presents significant techno-economical challenges. The presence of pollutants such as heavy metal ions (HMIs) and organic dyes (ODs) in wastewater is considered a significant problem owing to their carcinogenic and toxic nature. Additionally, industrial gaseous pollutants (GPs) are considered to be harmful to human health and may cause various environmental issues such as global warming, acid rain, smog and air pollution, etc. Conductive polymer-based nanomaterials have gained significant interest in recent years, compared with ceramics and metal-based nanomaterials. The objective of this review is to provide detailed insights into different conductive polymers (CPs) and their nanocomposites that are used as adsorbents for environmental remediation applications. The dominant types of CPs that are being used as adsorbent materials include polyaniline (PANI), polypyrrole (Ppy), and polythiophene (PTh). The various adsorption mechanisms proposed for the removal of ODs, HMIs, and other GPs by the different CPs are presented, together with their maximum adsorption capacities, experimental conditions, adsorption, and kinetic models reported.

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Removal of a non-steroidal anti-inflammatory by adsorption on polypyrrole/multiwalled carbon nanotube composite—Study of kinetics and equilibrium in aqueous medium

Cited by 29 publications

References 50 publications

Facile preparation of a polypyrrole modified Chinese yam peel-based adsorbent: characterization, performance, and application in removal of Congo red dye

Facile preparation of a polypyrrole modified Chinese yam peel-based adsorbent: characterization, performance, and application in removal of Congo red dye

Synthesis and Characterization of a Magnetic Carbon Nanofiber Derived from Bacterial Cellulose for the Removal of Diclofenac from Water

Conductive Polymers and Their Nanocomposites as Adsorbents in Environmental Applications

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