Nanotechnology for Water Treatment

Ali, Zarshad; Ahmad, Rashid

doi:10.1007/978-3-030-26672-1_5

Cited by 15 publications

(10 citation statements)

References 19 publications

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“…Prohibiting the growth of harmful microorganisms by improving or covering the surfaces with antimicrobial agents has received serious consideration for application in biomedical devices and health, as well as in the food and hygiene industries. 47 This application should possess adequate antibacterial benefits along with lower toxicity for humans. Silver nitrate solution shows a severe doseindependent cell toxicity in our results (Figure 5).…”

Section: Discussionmentioning

confidence: 99%

A Potent and Safer Anticancer and Antibacterial Taxus-Based Green Synthesized Silver Nanoparticle

Sarli¹,

Kalani²,

Moradi³

2020

IJN

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Paclitaxel is a generic drug produced based on Taxol which is an extract of Taxus tree, well known for its anticancer and antibacterial effects. This study was aimed at building up an agent with the antibacterial and anticancer benefits of both the silver ions and Taxol, together with less cytotoxic effects. Materials and Methods: Colloidal silver nanoparticles (AgNPs) were synthesized by reducing aqueous AgNO 3 with aqueous Taxus leaf extract at nonphotomediated conditions, without any catalyst, template or surfactant. The AgNP production was confirmed by ultraviolet-visible (UV-VIS) spectroscopy, scanning electron microscopy (SEM), X-ray diffraction (XRD) and Fourier-transform infrared (FTI) spectroscopy. The MTT assay for human breast cancer cells as well as the DAPI fluorescent staining microscopy tested the biocompatibility and anticancer effects of AgNPs, silver nitrate, and Taxol. Transmission electron microscopy (TEM) and dynamic light scattering (DLS) techniques were performed to determine the shape and size of the nanoparticles. MTT assay showed the best inhibitory concentration of AgNPs on cancer cells. The antibacterial activity of the three case study materials was tested for gram-positive (Staphylococcus aureus) and gram-negative bacteria (Escherichia coli and Pseudomonas aeruginosa) using well diffusion test. Results: This work proposes more anticancer effects for AgNP made by Taxus brevifolia extract, comparing Taxol solution. IC50 was observed as 3.1 mM for Taxol while 1.5 mM for new AgNP. Moreover, Taxus showed no antibacterial effects while the new AgNP showed a dose-dependent biocompatibility along with slightly more antibacterial effects (MIC: 1.6 and 6.6mM for gram-positive and -negative bacteria, respectively) comparing with silver nitrate solution (MIC: 1.5 and 6.2 mM for gram-positive and -negative bacteria, respectively). Conclusion:The production of herbal-mediated silver nanoparticles may be an efficient substitution for the silver nitrate-based medicines with less side effects.

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Section: Discussionmentioning

confidence: 99%

A Potent and Safer Anticancer and Antibacterial Taxus-Based Green Synthesized Silver Nanoparticle

Sarli¹,

Kalani²,

Moradi³

2020

IJN

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“…At the same time, even the AOP technologies used must be an integration of two or more processes. Furthermore, nanotechnology can be applied in wastewater separation, bioremediation, and disinfection [25]. Wu et al studied vacuum filtering and mixed-polymer e-spinning membranes made from Fe-containing nanomaterials to remove Cd 2+ ions from neutral aqueous solution [26].…”

Section: Introductionmentioning

confidence: 99%

Rationale for the Combined Use of Biological Processes and AOPs in Wastewater Treatment Tasks

et al. 2021

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This paper aims to form a unified concept of the integrated use of different wastewater treatment methods to form a resistant biological treatment stage of technological systems under the influence of such toxic factors as antibiotics and surfactants. The processes of mechanical treatment, ozonation, UV irradiation, and electrolytic anodic oxidation were implemented in an electrotechnological wastewater treatment facility. Wastewater treatment quality was determined by the concentration of nitrogen compounds in aqueous solutions according to the method of Lurie. Biodiagnostics of the investigated activated sludge via surfactant action was carried out at polyethylene oxide concentrations of 10, 30, and 50 mg/dm3. As a result of experiments on wastewater treatment after aquaculture, an improvement in the reduction of pollutants only by the indicator “nitrate concentration” was determined: by 20% after anodic oxidation, and by 15% after photolysis. At almost all surfactant concentrations studied, the activated sludge was not completely recovered, which was expressed in a decrease in its quantity and in the inability to aggregate flakes of activated sludge. The diameter of the growth retardation of the standard disk with antibiotic (amoxiclav) by the accumulative culture of activated sludge was 17.3 ± 2 mm at a concentration of 4 mg/dm3 and 31.3 ± 3 mm at a concentration of 6 mg/dm3. In the process of studying the state of the activated sludge’s biocenosis under the influence of such toxicants, several regularities were revealed. The directions of using combined approaches of water treatment and wastewater treatment were defined. The structural model of treatment facilities using aerobic and anaerobic bioprocesses together with advanced oxidative technologies was substantiated.

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“…As a consequence of the very interesting properties shown by carbon based nanomaterials, such as mechanical, electronic, optical, and chemical ones, a great number of fundamental investigations and technological applications have been developed since. [2][3][4][5][6][7] Despite the plethora of research done on carbon nanomaterials like fullerenes, nanotubes, nanoflakes, etc., [8][9][10][11][12][13][14][15][16] still some physicochemical properties have not been fully investigated. These include their vibrational properties and how they are related to their size and morphology, being the fullerene family a particular case.…”

Section: Introductionmentioning

confidence: 99%

On the forbidden graphene's ZO (out-of-plane optic) phononic band-analog vibrational modes in fullerenes

Pedroza-Montero,

Garzón,

Sauceda

2021

Preprint

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Nanotechnology for Water Treatment

Cited by 15 publications

References 19 publications

<p>A Potent and Safer Anticancer and Antibacterial <em>Taxus</em>-Based Green Synthesized Silver Nanoparticle</p>

<p>A Potent and Safer Anticancer and Antibacterial <em>Taxus</em>-Based Green Synthesized Silver Nanoparticle</p>

Rationale for the Combined Use of Biological Processes and AOPs in Wastewater Treatment Tasks

On the forbidden graphene's ZO (out-of-plane optic) phononic band-analog vibrational modes in fullerenes

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