Experimental Study of the Relationship Between Dissolved Iron, Turbidity, and Removal of Cu(II) Ion From Aqueous Solutions Using Zero-Valent Iron Nanoparticles

Hamdy, Ahmed

doi:10.1007/s13369-020-05079-0

Cited by 21 publications

(12 citation statements)

References 80 publications

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“…The adsorption capacity rose gradually as solution pH increased, and most copper was removed under alkaline conditions. At higher pH, the copper ion is mostly found in moderately alkaline cationic complexes such as Cu(OH) + , Cu 2 (OH) 2 2+ , and Cu 2 (OH) 4 2+ 34 . Considering the removal efficiency and final solution pH, optimum pH values for Cu(II) and Cr(VI) removal would be 3 and 5, respectively.…”

Section: Resultsmentioning

confidence: 99%

Portable SA/CMC entrapped bimetallic magnetic fly ash zeolite spheres for heavy metals contaminated industrial effluents treatment via batch and column studies

Angaru

Choi

Lingamdinne

et al. 2022

Sci Rep

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Heavy metals are perceived as a significant environmental concern because of their toxic effect, bioaccumulation, and persistence. In this work, a novel sodium alginate (SA) and carboxymethylcellulose (CMC) entrapped with fly ash derived zeolite stabilized nano zero-valent iron and nickel (ZFN) (SA/CMC-ZFN), followed by crosslinking with CaCl2, is synthesized and applied for remediation of Cu(II) and Cr(VI) from industrial effluent. The characterization of the adsorbent and its surface mechanism for removing metals were investigated using advanced instrumental techniques, including XRD, FT-IR, SEM–EDX, BET, and XPS. The outcomes from the batch experiments indicated that monolayer adsorption on homogeneous surfaces (Langmuir isotherm model) was the rate-limiting step in both heavy metals sorption processes. The maximum adsorption capacity of as-prepared SA/CMC-ZFN was 63.29 and 10.15 mg/g for Cu(II) and Cr(VI), respectively. Owing to the fact that the wastewater released from industries are large and continuous, a continuous column is installed for simultaneous removal of heavy metal ions from real industrial wastewater. The outcomes revealed the potential of SA/CMC-ZFN as an efficient adsorbent. The experimental breakthrough curves fitted well with the theoretical values of Thomas and Yoon-Nelson models. Overall, the results indicated that SA/CMC-ZFN is a viable, efficient, and cost-effective water treatment both interms of batch and column processes.

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Section: Resultsmentioning

confidence: 99%

Portable SA/CMC entrapped bimetallic magnetic fly ash zeolite spheres for heavy metals contaminated industrial effluents treatment via batch and column studies

Angaru

Choi

Lingamdinne

et al. 2022

Sci Rep

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“…The metal/metal oxides nanoparticles such as magnesium oxide (Stoimenov et al 2002 ), magnetite (Hamdy 2021 ), copper (Hsiao et al 2006 ), zinc oxide (Sánchez-López et al 2020 ), and silver (Kaur et al 2013 ; Sambhy et al 2006 ; Morones et al 2005 ) have exhibited remarkable antimicrobial properties. However, the antimicrobial activity mechanism of these compounds was still not clearly understood.…”

Section: Introductionmentioning

confidence: 99%

Bacteriostatic impact of nanoscale zero-valent iron against pathogenic bacteria in the municipal wastewater

2021

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Graphical abstract Nanoscale zero-valent iron particles were investigated as an antibacterial agent against two Gram-positive bacteria; Staphylococcus aureus NRRL B-313 ( S. aureus ), Bacillus subtilus NRC ( B. subtilus ), and two Gram-negative bacteria; Escherichia coli NRC B-3703 ( E. coli ), Pseudomonas aeruginosa NRC B-32 ( Ps. aeruginosa ). The characterization of synthesized nZVI particles was obtained by XRD, SEM, EDX, and TG analyses. The results demonstrated that the nZVI particles have a spherical shape, mean crystalline size of 44.43 nm, and exhibited a good chemical and thermal stability performance under different physical conditions. The bacterial suspensions were subjected to the treatment using nZVI particle suspensions with a concentration of 10 mg/mL. The minimum inhibitory concentration of nZVI particles was determined using the well diffusion assay method and found to be 15, 10, 10, and 5 mg for the following four strains; S. aureus , B. subtilus , E. coli , and Ps. aeruginosa , respectively. The biological treatment results of municipal wastewater using nZVI particles revealed that the counts of total bacteria, total coliform, fecal coliform, S. aureus , fecal Streptococcus , and E. coli were decreased to 44.29%, 51.76%, 90.95%, 46.67%, 33.33%, and 93.89%, respectively, while the Ps. aeruginosa not detected in the wastewater sample. The enhanced inactivation performance of nZVI nanoparticles was mainly attributed to the reactive oxygen species (ROS) production, releasing of iron corrosion products like Fe 2+ /Fe 3+ ions, and direct friction of nZVI particles with bacterial cells membranes. In addition, the nZVI particles presented a striking disinfection behavior in comparison with other widespread disinfection technologies such as chlorination. Accordingly, the obtained results introduce the nZVI particles as a promising disinfection technology.

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“…The XRD pattern showed no diffraction peaks related to any impurities, therefore, confirming the excellent purity of synthesized ZnO NPs. The crystalline size of the ZnO NPs found to be 48.70 nm as calculated using the Scherrer formula [ 29 ]:

where D is the crystalline size of ZnO NPs, λ is the X-ray wavelength, θ is the Bragg diffraction angle, β is the full-width at the half maximum of the diffraction peak corresponding to plane (101), and k is the Scherrer constant which is 0.9.…”

Section: Resultsmentioning

confidence: 99%

The Integrative Effects of Biochar and ZnO Nanoparticles for Enhancing Rice Productivity and Water Use Efficiency under Irrigation Deficit Conditions

Elshayb

Nada

Sadek

et al. 2022

Plants

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Water stress is considered one of the most environmental hazards that threaten agricultural productivity. Therefore, two field experiments were conducted to investigate the impact of biochar (6 t ha−1 as soil amendment), ZnO NPs (50 mg L−1 as foliar application), and their combination on growth, yield, and water use efficiency (WUE) of rice grown under four irrigation deficit treatments (i.e., irrigation every 3, 6, 9 and 12 d). The irrigation every 3 d was considered as the control in the current study. For this purpose, biochar was prepared through the pyrolysis of corn stalk and rice husk at 350 °C for 3 h, while sonochemical combined with the precipitation method was used to prepare zinc oxide nanoparticles (ZnO NPs) from zinc acetate. The morphological structures of the produced biochar and ZnO NPs were characterized using X-ray diffraction (XRD), N2 gas adsorption-desorption, scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The results exhibited that the combination of biochar alongside ZnO NPs resulted in a positive significant effect on the physiological traits such as chlorophyll content, relative water content, plant height, and leaf area index as well as yield-associated components (i.e., number of panicles m−2, number of filled grain per panicle, 1000-grain weight), and biological and grain yield ha−1 when rice plants were irrigated every 9 days without a significant difference with those obtained from the control treatment (irrigation every 3 d). In conclusion, the combination of biochar and ZnO NPs could be recommended as an optimal approach to maximize both grain yield ha−1 and WUE of rice.

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Experimental Study of the Relationship Between Dissolved Iron, Turbidity, and Removal of Cu(II) Ion From Aqueous Solutions Using Zero-Valent Iron Nanoparticles

Cited by 21 publications

References 80 publications

Portable SA/CMC entrapped bimetallic magnetic fly ash zeolite spheres for heavy metals contaminated industrial effluents treatment via batch and column studies

Portable SA/CMC entrapped bimetallic magnetic fly ash zeolite spheres for heavy metals contaminated industrial effluents treatment via batch and column studies

Bacteriostatic impact of nanoscale zero-valent iron against pathogenic bacteria in the municipal wastewater

The Integrative Effects of Biochar and ZnO Nanoparticles for Enhancing Rice Productivity and Water Use Efficiency under Irrigation Deficit Conditions

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