Acid Dye Removal from Aqueous Solution by Using Neodymium(III) Oxide Nanoadsorbents

Ahmadi, Shahin; Mohammadi, Leili; Rahdar, Abbas; Rahdar, Somayeh; Dehghani, Ramin; Igwegbe, Chinenye Adaobi; Kyzas, George Z.

doi:10.3390/nano10030556

Cited by 83 publications

(26 citation statements)

References 77 publications

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“…Therefore, the ratio observed in this study seems adequate to navigate the design space. 36 , 37 The R 2 value near to 1 determines an ideal connection between the mean and the data. 38 The R 2 value obtained in this study (0.7413) correlates to this connection better.…”

Section: Resultsmentioning

confidence: 99%

Nanotoxic Effects of Silver Nanoparticles on Normal HEK-293 Cells in Comparison to Cancerous HeLa Cell Line

Liu¹,

Shan²,

Shao³

et al. 2021

IJN

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Purpose Biomimetic approaches for the synthesis of silver nanoparticles (AgNPs) had created a substantial impression among the research community that focuses on nano-bio interactions. In this study, an eco-friendly method using Rhizophora apiculata aqueous leaf extract as a reductant-rich hydrosol was followed to synthesize AgNPs and test its cytotoxicity. Methods To optimise the parameters for the synthesis of AgNPs, central composite design based on response surface methodology was used. The particles synthesized at a nano-scale were characterized in our previously published report. The present report further characterizes the nanoparticles by X-ray diffraction, SEM and TEM at varying sites and magnifications. The characterized AgNPs were tested for their cytotoxic effects on HEK-293 and HeLa cells. Results The cytotoxicity on the cell lines was dose-dependent. At a concentration of 2.5 μL/mL of the AgNPs-containing hydrosol, 100% inhibition of HEK-293 cells and 75% inhibition of the HeLa cells were observed. The IC 50 value for AgNPs on HEK-293 was 0.622 µL/mL (12.135 ng), whereas, for HeLa cells, it was 1.98 µL/mL (38.629 ng). Conclusion The nanoparticles were three-fold toxic towards the HEK-293 cells in comparison to the HeLa cells. Therefore, the therapeutic index is low for R. apiculata derived AgNPs on HeLa cells when tested in comparison with the HEK-293 cells. The nanotoxicity profile of the synthesized AgNPs seems more prominent than the nanotherapeutic index. According to our knowledge, this is the first-ever report on the optimization of synthesis of AgNPs using response surface methodology and identifying the therapeutic index of mangrove leaf-derived AgNPs.

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Section: Resultsmentioning

confidence: 99%

Nanotoxic Effects of Silver Nanoparticles on Normal HEK-293 Cells in Comparison to Cancerous HeLa Cell Line

Liu¹,

Shan²,

Shao³

et al. 2021

IJN

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“…Ahmad et al [ 61 ] synthesized NdCl 3 (neodymium (iii) chloride) embedded with OMC (ordered mesoporous carbon) for the removal of sunset yellow from aqueous solution. Similarly, the synthesis of Nd 2 O 3 nanomaterial for extracting acid dye from aqueous media was reported [ 62 ]. In 2020, Chen and coworkers [ 63 ] prepared neodymium sesquioxide coated with graphene oxide nanocomposite and modified with glassy carbon electrode (GCE) for the determination of anti-cancer drug (raloxifene) in biological samples.…”

Section: Nanomaterialsmentioning

confidence: 99%

Current Applications of Magnetic Nanomaterials for Extraction of Mycotoxins, Pesticides, and Pharmaceuticals in Food Commodities

2021

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Environmental pollutants, such as mycotoxins, pesticides, and pharmaceuticals, are a group of contaminates that occur naturally, while others are produced from anthropogenic sources. With increased research on the adverse ecological and human health effects of these pollutants, there is an increasing need to regularly monitor their levels in food and the environment in order to ensure food safety and public health. The application of magnetic nanomaterials in the analyses of these pollutants could be promising and offers numerous advantages relative to conventional techniques. Due to their ability for the selective adsorption, and ease of separation as a result of magnetic susceptibility, surface modification, stability, cost-effectiveness, availability, and biodegradability, these unique magnetic nanomaterials exhibit great achievement in the improvement of the extraction of different analytes in food. On the other hand, conventional methods involve longer extraction procedures and utilize large quantities of environmentally unfriendly organic solvents. This review centers its attention on current applications of magnetic nanomaterials and their modifications in the extraction of pollutants in food commodities.

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“…The total cost for the treatment of 1 L of the AW was evaluated using the expression shown in (7). The energy consumption (E C ) was evaluated as 1.3 EUR using (8) [31]:…”

Section: Cost Estimationmentioning

confidence: 99%

Coagulation-Flocculation of Aquaculture Wastewater Using Green Coagulant from Garcinia kola Seeds: Parametric Studies, Kinetic Modelling and Cost Analysis

et al. 2021

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To achieve sustainability, it is necessary to use proper treatment methods to reduce the pollutant loads of receiving waters. This study investigates the coagulative reduction of turbidity, COD, BOD and colour from aquaculture wastewater (AW) using a novel Garcinia kola seeds coagulant (GKC). This coagulant was obtained from extraction of Garcinia kola seeds and analysed for its spectral and morphological characteristics through FTIR and SEM. The kinetics of coagulation-flocculation were also investigated in terms of total dissolved and suspended solids (TDSP). The seeds had 11.27% protein and 68.33% carbohydrate, showing usability in adsorption/charges neutralisation as a coagulant to reduce particles. Maximal turbidity reduction = 81.93%, COD = 75.03%, BOD = 72.84% and colour = 56.69% at 0.3 g GKC/L, pH 2, 60 min and 303 K were achieved. Von Smoluchowski’s second-order peri-kinetics theory was used to fit the results, giving R2 > 0.9. At a coagulation order (α) of 2, the reaction rate (KC) and half-life (τS1/2) were 0.0003 L/g·min and 25.3 min at the optimal conditions. The sorption data better fit the Lagergren compared to the Ho adsorption model. Furthermore, the net cost of using GKC to handle 1 L of AW (including electricity and material costs) was calculated to be 1.57 EUR, and the costs of 0.3 g/L GKC preparation and energy were 0.27 and 1.30 EUR, respectively. In summary, these seeds can be used to pre-treat AW.

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Acid Dye Removal from Aqueous Solution by Using Neodymium(III) Oxide Nanoadsorbents

Cited by 83 publications

References 77 publications

Nanotoxic Effects of Silver Nanoparticles on Normal HEK-293 Cells in Comparison to Cancerous HeLa Cell Line

Nanotoxic Effects of Silver Nanoparticles on Normal HEK-293 Cells in Comparison to Cancerous HeLa Cell Line

Current Applications of Magnetic Nanomaterials for Extraction of Mycotoxins, Pesticides, and Pharmaceuticals in Food Commodities

Coagulation-Flocculation of Aquaculture Wastewater Using Green Coagulant from Garcinia kola Seeds: Parametric Studies, Kinetic Modelling and Cost Analysis

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