Development of zinc removal process from contaminated water using statistical approaches

Gahlan, Ahmed; Hassan, Rania; Gouda, Gamal A.; Aly-Eldeen, Mohamed A.; Badawy, Naguaz

doi:10.21608/ejchem.2022.135129.5941

Cited by 4 publications

(3 citation statements)

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“…This can be attributed to the bioactive molecules such as phenolics, flavonoids, terpenoids, and ginkgolides that are present in the GB extract that is involved in the bioreduction process. In Figure 7 , FT-IR of GB leaf extract shows the presence of –CH stretching vibrations of –CH 3 or –CH functional groups at 2958 cm −1 [ 58 ], O–H stretching at 3390 cm −1 , C–O stretching and carboxyl C=O at 1378 cm −1 and 1720 cm −1 , respectively, alkylphenols (1078 cm −1 ), and aromatic C=C (1632 cm −1 ) [ 5 , 59 , 60 , 61 , 62 , 63 ]. The peaks at 1632 and 1638 cm −1 were for O–H, C–O, and C=O as functional groups of GB extract.…”

Section: Resultsmentioning

confidence: 99%

Identifying the Anti-MERS-CoV and Anti-HcoV-229E Potential Drugs from the Ginkgo biloba Leaves Extract and Its Eco-Friendly Synthesis of Silver Nanoparticles

et al. 2023

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The present study aimed to estimate the antiviral activities of Ginkgo biloba (GB) leaves extract and eco-friendly free silver nanoparticles (Ag NPs) against the MERS-CoV (Middle East respiratory syndrome-coronavirus) and HCoV-229E (human coronavirus 229E), as well as isolation and identification of phytochemicals from GB. Different solvents and high-performance liquid chromatography (HPLC) were used to extract and identify flavonoids and phenolic compounds from GB leaves. The green, silver nanoparticle synthesis was synthesized from GB leaves aqueous extract and investigated for their possible effects as anti-coronaviruses MERS-CoV and HCoV-229E using MTT assay protocol. To verify the synthesis of Ag NPs, several techniques were employed, including X-ray diffraction (XRD), scan, transmission electron microscopy, FT-IR, and UV–visible spectroscopy. The highest contents of flavonoids and phenolic compounds were recorded for acetone, methanol, and ethanol as mixtures with water, in addition to pure water. HPLC flavonoids were detected as apegenin, luteolin, myricetin, and catechin, while HPLC phenolic compounds were pyrogallol, caffeic acid, gallic acid, and ellagic acid. In addition, our results revealed that Ag NPs were produced through the shift from yellow to dark brown. TEM examination of Ag NPs revealed spherical nanoparticles with mean sizes ranging from 5.46 to 19.40 nm and an average particle diameter of 11.81 nm. A UV–visible spectrophotometric investigation revealed an absorption peak at λ max of 441.56 nm. MTT protocol signified the use of GB leaves extract as an anti-coronavirus to be best from Ag NPs because GB extract had moderate anti-MERS-CoV with SI = 8.94, while had promising anti-HCov-229E, with an SI of 21.71. On the other hand, Ag NPs had a mild anti-MERS-CoV with SI = 4.23, and a moderate anti-HCoV-229E, with an SI of 7.51.

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Section: Resultsmentioning

confidence: 99%

Identifying the Anti-MERS-CoV and Anti-HcoV-229E Potential Drugs from the Ginkgo biloba Leaves Extract and Its Eco-Friendly Synthesis of Silver Nanoparticles

et al. 2023

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“…Additionally, the b T values of 0.148 kJ/mol demonstrated that the removal was accomplished through a physisorption mechanism [ 84 ]. The plot of ln q e versus ε 2 in Fig.…”

Section: Resultsmentioning

confidence: 99%

Biosynthesis approach of zinc oxide nanoparticles for aqueous phosphorous removal: physicochemical properties and antibacterial activities

2023

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In this study, phosphorus (PO43–-P) is removed from water samples using zinc oxide nanoparticles (ZnO NPs). These nanoparticles are produced easily, quickly, and sustainably using Onion extracts (Allium cepa) at an average crystallite size of 8.13 nm using the Debye–Scherrer equation in the hexagonal wurtzite phase. The characterization and investigation of bio-synthesis ZnO NPs were carried out. With an initial concentration of 250 mg/L of P, the effects of the adsorbent dose, pH, contact time, and temperature were examined. At pH = 3 and T = 300 K, ZnO NPs achieved the optimum sorption capacity of 84 mg/g, which was superior to many other adsorbents. The isothermal study was found to fit the Langmuir model at a monolayer capacity of 89.8 mg/g, and the kinetic study was found to follow the pseudo-second-order model. The adsorption process was verified to be endothermic and spontaneous by thermodynamic characteristics. As a result of their low cost as an adsorbent and their high metal absorption, ZnO NPs were found to be the most promising sorbent in this investigation and have the potential to be used as effective sorbents for the removal of P from aqueous solutions. The antimicrobial activity results showed that ZnO NPs concentration had greater antibacterial activity than conventional Cefotaxime, which was utilized as a positive control in the inhibitory zone. However, no inhibitory zone was visible in the controlled wells that had been supplemented with onion extract and DMSO.

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“…The similarities between the spectra of ZnO NPs and onion extract indicated the existence of bioactive organic groups as reducing agents, which confirmed that these bioactive groups were responsible for the fabrication and stabilization of prepared nanoparticles 33,34 . the new peak was observed at 567 cm −1 according to Zn−O(As) stretching vibration, 35,36 .…”

Section: Ft-ir Analysismentioning

confidence: 99%

Biosynthesis and Antibacterial Evaluation of Zinc Oxide Nanoparticles From Onion Extract (Allium Cepa)

Khamis,

Gouda,

Nagiub

2023

Bulletin of Pharmaceutical Sciences Assiut University

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The aim of this research is to use red onion extract (Allium cepa) in the green synthesis of zinc oxide nanoparticles (ZnO NPs). With an average crystal size of 8.13 nm, X-ray diffraction (XRD) scanning was used to determine the hexagonal wurtzite structure of the ZnO NPs. Infrared spectra (FT-IR) provided evidence of capping and biogenesis stability of ZnO NPs. The absorption peak at 374 nm with an energy gap of 3.32 eV was determined by surface plasmon resonance via UV-visible analysis. Morphological analysis was performed, and the results demonstrated the formation of spherical ZnO NPs with sizes ranging from 2.83 to 15.35 nm. The great purity, intensity, and crystal width of zinc and oxygen was determined by EDS. When compared to a common antibiotic such as ciprofloxacin, which was used as a positive control in the inhibitory zone, ZnO NPs showed more antibacterial effect against E. coli than S. aureus bacteria. Onion extract and DMSO were added to the control wells, but these additions did not produce an inhibitory zone that could be seen.

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Development of zinc removal process from contaminated water using statistical approaches

Cited by 4 publications

References 0 publications

Identifying the Anti-MERS-CoV and Anti-HcoV-229E Potential Drugs from the Ginkgo biloba Leaves Extract and Its Eco-Friendly Synthesis of Silver Nanoparticles

Identifying the Anti-MERS-CoV and Anti-HcoV-229E Potential Drugs from the Ginkgo biloba Leaves Extract and Its Eco-Friendly Synthesis of Silver Nanoparticles

Biosynthesis approach of zinc oxide nanoparticles for aqueous phosphorous removal: physicochemical properties and antibacterial activities

Biosynthesis and Antibacterial Evaluation of Zinc Oxide Nanoparticles From Onion Extract (Allium Cepa)

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