Catalytic ozonation process using a MgO nano-catalyst to degrade methotrexate from aqueous solutions and cytotoxicity studies in human lung epithelial cells (A549) after treatment

Alinejad, Abdolazim; Akbari, Hamed; Ghaderpoori, Mansour; Jeihooni, Ali Khani; Adibzadeh, Amir

doi:10.1039/c9ra00320g

Cited by 39 publications

(8 citation statements)

References 49 publications

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“…For this reason, technologies that have the ability to purify air from organic contaminants with efficient and inexpensive processes became the objective of many research groups [5,6]. Thus, several remediation techniques were used to reduce this kind of pollutants using photocatalysts [7,8], non-thermal plasma [9,10], catalytic ozonation [11]. Scientific studies on photocatalysis started about four decades ago and showed that photocatalysis can be an interesting technique for environmental remediation [7,8,12].…”

Section: -Introductionmentioning

confidence: 99%

Simultaneous removal of bacteria and volatile organic compounds on Cu2O-NPs decorated TiO2 nanotubes: Competition effect and kinetic studies

Abidi

Hajjaji

Bouzaza

et al. 2020

Journal of Photochemistry and Photobiology A: Chemistry

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Section: -Introductionmentioning

confidence: 99%

Simultaneous removal of bacteria and volatile organic compounds on Cu2O-NPs decorated TiO2 nanotubes: Competition effect and kinetic studies

Abidi

Hajjaji

Bouzaza

et al. 2020

Journal of Photochemistry and Photobiology A: Chemistry

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“…Data from batch adsorption studies were tested against four kinetic models in order to understand the adsorption kinetics of ARS and EBT dyes onto UTG. These includes kinetic explanations of the adsorption of these dyes onto UTG adsorbent using pseudo-first-order, pseudo-second-order, Elovich, and intraparticle diffusion (Alinejad et al, 2019). The kinetics models employed have a linear form as shown in equations (7-10) as reported by and Kamarehie et al (2020).…”

Section: Kinetic Studiesmentioning

confidence: 99%

Study on Adsorption of Alizarin Red S and Eriochrome Black T Dyes by Untreated Typha Grass as a Low Cost Adsorbent

Ayuba

Sani

2022

USci

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The purpose of this investigation was to study the adsorptive potential of untreated typha grass (UTG) using a batch system under control conditions to decolorize Alizarin Red S (ARS) and Eriochrome Black T (EBT) anionic toxic dyes from synthetic aqueous solution. In this regard, the impact of various experimental parameters namely, contact time, adsorbent dose, initial dye concentration, pH, and temperature were assessed and optimized. The adsorbent was characterized using Fourier transformed infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), and point of zero charge (PZC) analysis. The maximum adsorption rates of ARS and EBT onto UTG were determined to be 49.92 mg/g and 47.43 mg/g, respectively, at equilibrium. In comparison to previous models evaluated, removal of both ARS and EBT by the UTG demonstrated that the data had a strong fit with pseudo-second-order kinetic and Freundlich adsorption isotherms. The contact time for both dyes was optimised at 15 minutes, while the pH for ARS and EBT were attained at 8 and 2 respectively. However, based on the established results of various parameters in this study, the adsorptive removal of ARS and EBT by UTG was a favourable process. The Van't Hoff plot was used to calculate the thermodynamic quantities of the adsorption process, including ΔG, ΔH and ΔS. The outcomes showed that the process was both spontaneous and thermodynamically possible. From the parameters tested, EBT was found to be better adsorbed onto UTG than ARS. Even though both dyes are anionic in nature, but EBT has additional diazo and nitro functional groups than the hydroxyl and sulphate functional groups present in ARS. This might be the reason for the better adsorption of EBT onto UTG than ARS. Results from this investigation supported the efficiency of UTG as a low-cost and environmentally friendly solution for the adsorption of ARS and EBT from contaminated wastewater.

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“…One of the priority pollutants is pharmaceutical compounds that get into the surface and groundwater mainly through discharging industrial and municipal wastewaters (Bahrami Asl et al 2015;Dong et al 2016). The presence of medicinal substances in the environment due to their high stability disrupts the conventional wastewater treatment processes (Rivera-Utrilla et al 2009;Alinejad et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Removal of metronidazole antibiotic from aqueous solution by ammonia-modified activated carbon: adsorption isotherm and kinetic study

Ahmadfazeli

Poureshgh

Rashtbari

et al. 2021

Journal of Water, Sanitation and Hygiene for Development

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This article was aimed at investigating the removal of metronidazole (MNZ) from aquatic solutions by modified activated carbon (MAC) with amine groups. The effect of various parameters on the adsorption rate such as the initial pH, adsorbent dose and initial concentration of MNZ and contact time were scrutinized. MAC was characterized by Fourier transform infrared spectroscopy and Brunauer–Emmett–Teller techniques. The obtained results illustrated that under the optimum conditions (pH = 3, contact time = 50 min, initial MNZ concentration = 5 mg/L and MAC dose = 0.5 g/L), the maximum adsorption efficiency was 95%. Furthermore, the kinetic studies indicated the applicability of the pseudo-second-order kinetic model, whereas the adsorption isotherm fitted well with the Freundlich model (0.996), and the maximum adsorption capacity was 66.22 mg/g. The SBET and the total pure volume of MAC were 706.92 m2/g and 0.532 cm3/g, respectively. Also, the regeneration tests demonstrated that MAC had good stability after five cycles (73%). It can be concluded that MAC, as an effective adsorbent, has a high ability to remove MNZ from aqueous solutions.

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Catalytic ozonation process using a MgO nano-catalyst to degrade methotrexate from aqueous solutions and cytotoxicity studies in human lung epithelial cells (A549) after treatment

Abstract: Pharmaceutical compounds which enter the environment are classified as emerging pollutants.

Cited by 39 publications

References 49 publications

Simultaneous removal of bacteria and volatile organic compounds on Cu2O-NPs decorated TiO2 nanotubes: Competition effect and kinetic studies

Simultaneous removal of bacteria and volatile organic compounds on Cu2O-NPs decorated TiO2 nanotubes: Competition effect and kinetic studies

Study on Adsorption of Alizarin Red S and Eriochrome Black T Dyes by Untreated Typha Grass as a Low Cost Adsorbent

Removal of metronidazole antibiotic from aqueous solution by ammonia-modified activated carbon: adsorption isotherm and kinetic study

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