Zno/Carbon nanofibers for efficient adsorption of lead from aqueous solutions

Ibupoto, Abdul Sameeu; Qureshi, Umair Ahmed; Arain, Maryam; Ahmed, Farooq; Khatri, Zeeshan; Brohi, Rafi Zaman; Kim, Ick Soo; Ibupoto, Zafar Hussain

doi:10.1080/09593330.2019.1580774

Cited by 27 publications

(12 citation statements)

References 38 publications

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“…As mentioned above, oxide particles are used to give selectivity to a hybrid membrane; for this reason, the effect of the amount of NP on the CA/ZnO was evaluated in an interval of 0 to 3%. An addition of nanoparticles had a positive effect on adsorption capacity ( Table 1 ); this may have come from the availability of active sites on the surface of CA/ZnO caused by the complexations between the lead and the oxygen of ZnO present in the surface of the membrane [ 37 , 38 ]. It is important to say that 3% is the maximum amount of ZnO that can be added; this was the amount used in further experiments.…”

Section: Resultsmentioning

confidence: 99%

Evaluation of the Hybrid Membrane of ZnO Particles Supported in Cellulose Acetate for the Removal of Lead

et al. 2023

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Water polluted by discarded heavy metals such as lead is creating a global pollution problem. In this work, adsorption of Pb(II) was realized in batch studies by a hybrid membrane of cellulose acetate with ZnO particles. First, ZnO particles were prepared by precipitation and immobilized on the membrane. The hybrid membrane was elaborated by interfacial polymerization. The structure and surface were characterized based on Fourier-transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), and scanning electron microscopy (SEM). Batch experiments were carried out under different conditions where the number of particles of ZnO present in the membrane and the pH of the aqueous solution were varied. The Langmuir and Freundlich isotherm models were evaluated in the best adsorption conditions. Data fitted well with a Langmuir model with a maximum adsorption capacity of 15.55 mg·g−1, which was similar for this type of materials. Thermodynamic parameters such as Gibbs free energy, enthalpy, and entropy showed that the process was spontaneous and favorable. The hybrid membrane was evaluated in simulated wastewater of the battery industry with a superior efficiency of up to 97%; without the medium, it did not generate interference. These results suggest that Pb(II) removal by hybrid membrane is possible.

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Section: Resultsmentioning

confidence: 99%

Evaluation of the Hybrid Membrane of ZnO Particles Supported in Cellulose Acetate for the Removal of Lead

et al. 2023

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“…Ibupoto et al [29] found that 2 mg of ZnO/Carbon nano bers caused 80 % removal of Pb in a 20 ml of 10 ppm lead solution after 80 min.…”

Section: Resultsmentioning

confidence: 99%

Preparation of green synthesized copper oxide nanoparticles for efficient removal of lead from wastewaters

Zarrabi

Ghasemi-Fasaei

2021

International Journal of Phytoremediation

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Green synthesis is a clean and eco-friendly process in which metal nanoparticles can be produced via reaction between a metal salt solution and plant organ extract. In present study, three copper oxide nanoparticles were synthesized using green synthesis processes from the leaf extracts of selected plants as abundant plant cover in the study area including astragalus (Astragalus membranaceus), rosemary (Salvia rosmarinus) and mallow (Malva sylvestris). The effectiveness of three green synthesized nanoparticles in the adsorption of lead ions from a polluted water was studied under laboratory conditions. According to the results, the removal e ciencies of the copper oxide nanoparticles synthesized from astragalus (A-CuO-NPs), rosemary (R-CuO-NPs) and mallow leaf extract (M-CuO-NPs) especially at the highest initial concentration of Pb (1.5 mM) were 88.4 %, 84.9 % and 69.6 %, respectively. Most probably due the smooth morphology and more uniform con guration of the M-CuO-NPs, the changes between equilibrium adsorption (q e ) and equilibrium concentration (C e ) were more regular than those of the A-CuO-NPs and R-CuO-NPs. Accordingly the best tted data to Langmuir and Freundlich isotherms were observed in the adsorption of Pb onto the M-CuO-NPs. Despite the lowest removal e ciency of the M-CuO-NPs, with the equal volumes of each leaf extract and CuSO 4 .5H 2 O solution (20 mM), the most produced dry weight was observed for these nanoparticles (4.3 g per 100 mL of leaf extract). According to the results reported herein, the copper oxide nanoparticles synthesized from different plant covers are e cient adsorption agents for Pb from wastewaters.

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“…It was obtained that the adsorption capacity of ZnO-ACNFs nanocomposite was 92.59 mg g −1 within the contact time of 45 min. It was illustrated that the multiple binding modes were adequately explained by the electrostatic forces and ion exchange (Ibupoto et al , 2020). This was due to the interchange of H + in the functional groups that contain oxygen atoms and Pb 2+ ions during the adsorption process.…”

Section: Nanocomposite Adsorbentsmentioning

confidence: 99%

ZnO-based nanocomposites for removal of lead (Pb²⁺) from water/wastewater: a review

Khashij

Salmani

Dalvand

et al. 2022

PRT

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Purpose This paper aims to investigation of processes for Pb2+ elimination from water/wastewater as a significant public health issue in many parts of world. The removal of Pb2+ ions by various nanocomposites has been explained from water/wastewaters. ZnO-based nanocomposites, as eco-friendly nanoparticles with unique physicochemical properties, have received increased attention to remove Pb2+ ions from water/wastewaters. Design/methodology/approach In this review, different ZnO-based nanocomposites were reviewed for their application in the removal of Pb2+ ions from the aqueous solution, typically for wastewater treatment using methodology, such as adsorption. This review focused on the ZnO-based nanocomposites for removing Pb2+ ions from water and wastewaters systems. Findings The ZnO-based nanocomposite was prepared by different methods, such as electrospinning, hydrothermal/alkali hydrothermal, direct precipitation and polymerization. Depending on the preparation method, various types of ZnO-based nanocomposites like ZnO-metal (Cu/ZnO, ZnO/ZnS, ZnO/Fe), ZnO-nonmetal (PVA/ZnO, Talc/ZnO) and ZnO-metal/nonmetal (ZnO/Na-Y zeolite) were obtained with different morphologies. The effects of operational parameters and adsorption mechanisms were discussed in the review. Research limitations/implications The findings may be greatly useful in the application of the ZnO-based nanocomposite in the fields of organic and inorganic pollutants adsorption. Practical implications The present study is novel, because it investigated the morphological and structural properties of the synthesized ZnO-based nanocomposite using different methods and studied the capability of green-synthesized ZnO-based nanocomposite to remove Pb2+ ions as water contaminants. Social implications The current review can be used for the development of environmental pollution control measures. Originality/value This paper reviews the rapidly developing field of nanocomposite technology.

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Zno/Carbon nanofibers for efficient adsorption of lead from aqueous solutions

Cited by 27 publications

References 38 publications

Evaluation of the Hybrid Membrane of ZnO Particles Supported in Cellulose Acetate for the Removal of Lead

Evaluation of the Hybrid Membrane of ZnO Particles Supported in Cellulose Acetate for the Removal of Lead

Preparation of green synthesized copper oxide nanoparticles for efficient removal of lead from wastewaters

ZnO-based nanocomposites for removal of lead (Pb²⁺) from water/wastewater: a review

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Zno/Carbon nanofibers for efficient adsorption of lead from aqueous solutions

Cited by 27 publications

References 38 publications

Evaluation of the Hybrid Membrane of ZnO Particles Supported in Cellulose Acetate for the Removal of Lead

Evaluation of the Hybrid Membrane of ZnO Particles Supported in Cellulose Acetate for the Removal of Lead

Preparation of green synthesized copper oxide nanoparticles for efficient removal of lead from wastewaters

ZnO-based nanocomposites for removal of lead (Pb2+) from water/wastewater: a review

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Product

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ZnO-based nanocomposites for removal of lead (Pb²⁺) from water/wastewater: a review