Green sol–gel synthesis of novel nanoporous copper aluminosilicate for the eradication of pathogenic microbes in drinking water and wastewater treatment

Hemdan, Bahaa A.; Nahrawy, Amany M. El; Mansour, A. M.; Hammad, Ali B. Abou

doi:10.1007/s11356-019-04431-8

Cited by 88 publications

(30 citation statements)

References 72 publications

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“…The width of given clear zone toward target strains; S. enterica , C. albicans , S. aureus , E. coli , P. aeruginosa , and E. faecalis , respectively were 10, 10, 11, 12, 12, and 12 mm. Furthermore, results in compatible with [19] who revealed that, Clear area widths using well diffusion techniques were larger than that of the disk diffusion technique. In antimicrobial sustainability test, results found that Staph.…”

Section: Resultssupporting

confidence: 87%

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Decontamination of ubiquitous harmful microbial lineages in water using an innovative Zn2Ti0.8Fe0.2O4 nanostructure: dielectric and terahertz properties

Nahrawy

Bakr

Hemdan

et al. 2019

Heliyon

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Many ubiquitous dangerous microbial lines could originate in different sources of polluted water and be distributed to tap water, which could cause multiple types of illnesses to humans and livestock. Despite enormous attempts to guarantee safety of potable water, these species are still regarded to be threated prevalent health issues and concerns. However, these species need a powerful disinfectant to be removed from contaminated water for receiving clean and healthy water. This study was therefore conducted to produce magnificent magnetic iron titanate zinc nano-particles (Zn2Ti0.8Fe0.2O4 MNPs) as a sophisticated approach for drinking water (DW) and wastewater purification. The identification of crystalline phase, dielectric and terahertz spectroscopy of iron zinc titanate nanostructure prepared via acidic sol-gel process and calcined at 800 °C. Results show that the formation of cubic structure for Zn2TiO4 phase, and the dielectric constant (εʹ) decreased with the higher frequency, tan (δ) has higher values at lower frequency and the conductivity increases relatively with frequency that attributes to the high resistive grain boundaries. Absorption coefficient, refractive index and dielectric properties of iron zinc titanate nano-particles was estimated via time domain-terahertz spectrometer and adjusted via the applied electric field. In particular, the Gram-negative bacteria were more prone than other microbes tested to the Magnetic Nano-Particles (MNPs). Results also was ascertained that the minimum inhibitory concentration (MIC) was 25 ppm at 30 min for E. coli and Salmonella enterica, 45 min for Listeria monocyteogens, Staphylococcus aureus, and Candida albicans and 60 min for Aspergillus niger with a noticeable bactericidal impact. Results exhibit that the MNPs explored are non-toxic and protected for individuals and the environment. MNPs can, therefore, be proposed as an expedient and impressive nano-scale applicant for inactivation during the drinking water and wastewater conservation of the prevailing dangerous microbes.

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Section: Resultssupporting

confidence: 87%

“…The MIC of MNPs against the mentioned harmful microbial pathogens was estimated by broth dilution methods [19]. The MIC was defined as the minimum concentration of MNPs-disinfectant at which no growth was observed following overnight incubation at 37 °C.…”

Section: Methodsmentioning

confidence: 99%

Decontamination of ubiquitous harmful microbial lineages in water using an innovative Zn2Ti0.8Fe0.2O4 nanostructure: dielectric and terahertz properties

Nahrawy

Bakr

Hemdan

et al. 2019

Heliyon

Self Cite

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“…The effective dose (50 μL) of the nanomaterial (CAS) (Elwakeel et al 2018) was then transferred into 50 mL of untreated Nile water, the raw wastewater, or synthetic contaminated water samples, in separate flasks. After the addition of the nanocomposites, each tube was sampled at 5,10, 15, 20, 25, 30, 40, 50, and 60 min and the bacterial counts determined by plating 10 mL of the water samples onto the respective chromogenic culture media (Hemdan et al 2019).…”

Section: Application Of the Mesoporous Nanocomposites For The Disinfementioning

confidence: 99%

“…Among the synthesized nanostructures, quasi-crystal and ceramics nanomaterials have demonstrated excellent potentials due to their structural properties (Nahrawy et al 2018;Nahrawy et al 2019). Some recent reports investigated their structural characterizations and indicated that it was possible to prepare materials with quasi-crystalline and nanocrystalline structures (Sadrolhosseini et al 2017;Hemdan et al 2019). The combination of a silicate network and magnetic particles in the production of magnetic nanomaterials results in an increased surface area and enhances the porosity of the material, thus remarkably improving their performance (Kooti and Nasiri 2015;Perween and Ranjan 2017).…”

Section: Introductionmentioning

confidence: 99%

Nanoceramics and novel functionalized silicate-based magnetic nanocomposites as substitutional disinfectants for water and wastewater purification

Nahwary

Hemdan

Abia

2020

Environ Sci Pollut Res

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Herein, we successfully synthesized nano-porous Co 2 O 3 /Cu 2 O 3 : Al 2 O 3 : SiO 2 ((0, 5, 7, 9) Co-CAS) using the acidic sol-gel approach and calcined at 800°C for 4 h. The crystallization behavior and spectroscopic properties were investigated using X-ray diffraction, field emission-scanning electron microscopy, and Fourier-transform infrared absorption spectra analysis. The antibiotic properties of the nano-porous CAS, 5Co-CAS, and 9Co-CAS magnetic nanocomposites was studied against some potentially pathogenic bacteria in water and wastewater samples. The bacteria tested included Escherichia coli, Salmonella enterica, Pseudomonas aeruginosa, Listeria monocytogenes, Staphylococcus aureus, Enterococcus faecalis, and Bacillus subtilis. Incorporating Co 2 O 3 resulted in the identification of three peaks at 2θ = 10.2°, 13.4°, and 15°. The introduction of cobalt nanoparticles created a ferromagnetic behavior in the CAS nanoceramic, with the magnetic moment and saturation values increasing with increased Co 2 O 3 doping. 9Co-CAS was most potent against all the tested pathogens with minimum inhibitory concentrations of 25 mg/L within 40 min for E. coli and P. aeruginosa and 50 mg/L within 10 min for S. enterica; the lowest antibacterial activity was observed with the unmodified CAS. The findings revealed that the manufactured nanocomposite materials were potent disinfectants with a promising application for water and wastewater treatment.

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“…The mean crystallites size was calculated using the Debye-Scherrer Eq. (11), in which K is a constant equal 0.9, λ is the wave length of the Cu K radiation, β is the half peak width of the diffraction peak in radiant [31][32][33].…”

Section: X-ray Diffractionmentioning

confidence: 99%

Integration of Fenton Oxidation with Nano-Graphene Oxide to Eliminate the Hazardous Effect of Chromated/Dyed Tannery Effluents

Nashy¹,

Alashkar²,

Masaoud³

et al. 2020

Egypt. J. Chem.

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Effective management of tannery effluent is needed for this time. Tanning industry is one of the worst industries from an environmental point of view, where is the prominent sources of pollution to the aquatic environment. Wetfinishing effluent is the most dangerous step, which generate the obnoxious effluent in the tanning industry. The conventional treatments of such waste showed deficiency to coop with the required limits of national regulatory standards. In the present study, an advanced oxidation technique based on modification of Fenton reaction combined with high porous nanomaterials was applied as an alternative treatment. Variable doses of H2O2, Fe +2 , CaO and pH were investigated to determine the optimum operating conditions. The obtained results indicated a good quality of the treated effluent. Residual concentrations of COD, BOD and TSS were 98.51%, 98.11% and 98.82% removal, respectively. The most obnoxious material (Cr) was highly removed (98.92%). Also, decolourization value (YCOL values) was obtained using Nano GO (99%) and/or active charcoal (88.08 %) with CaO. The residual effect of H2O2 was reduced by MnO2, SnO and Fe powder than sod. thiosulphate. The treated effluent could meet to the National regulatory standard for discharging into the sewerage systems with respect to the studied parameters.

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Green sol–gel synthesis of novel nanoporous copper aluminosilicate for the eradication of pathogenic microbes in drinking water and wastewater treatment

Cited by 88 publications

References 72 publications

Decontamination of ubiquitous harmful microbial lineages in water using an innovative Zn2Ti0.8Fe0.2O4 nanostructure: dielectric and terahertz properties

Decontamination of ubiquitous harmful microbial lineages in water using an innovative Zn2Ti0.8Fe0.2O4 nanostructure: dielectric and terahertz properties

Nanoceramics and novel functionalized silicate-based magnetic nanocomposites as substitutional disinfectants for water and wastewater purification

Integration of Fenton Oxidation with Nano-Graphene Oxide to Eliminate the Hazardous Effect of Chromated/Dyed Tannery Effluents

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