Polyvinyl Alcohol/Alginate/Zeolite Nanohybrid for Removal of Metals

Tabatabaeefar, Amin; Keshtkar, Asghar; Talebi, Marzieh; Abolghasemi, Hossein

doi:10.1002/ceat.201900231

Cited by 29 publications

(6 citation statements)

References 56 publications

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“…The peak observed at 3,233 cm −1 is assigned to the hydroxyl stretching band of PVA, sodium alginate and zeolite 63 . The alkyl stretching present in PVA, sodium alginate and zeolite can be seen at 2,915 cm −1 and the sharp peak centered at 1,630 cm −1 is assigned to the characteristic C=O stretching of carboxyl group of sodium alginate 64 . A prominent band at 1,075 cm −1 can be seen in the FTIR spectra and is attributed to the acetal bridge (C–O–C) present in the crosslinked structure of PVA and GA.…”

Section: Resultsmentioning

confidence: 99%

Removal of anionic dye Congo red from aqueous environment using polyvinyl alcohol/sodium alginate/ZSM-5 zeolite membrane

Radoor

Karayil²,

Parameswaranpillai

et al. 2020

Sci Rep

101

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In this study, a novel PVA/SA/ZSM-5 zeolite membrane with good regeneration capacity was successfully prepared by solvent casting technique. The properties of the membranes were assessed by employing different characterization techniques such as X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FT-IR), scanning electron microscope (SEM), optical microscopy (OP), thermogravimetric analysis (TGA), contact angle and universal testing machine (UTM). XRD, TGA and UTM results revealed that the crystallinity and thermo-mechanical performance of the membrane could be tuned with zeolite content. The successful incorporation of zeolite into the polymer matrix was confirmed by FT-IR, SEM and OP analysis. The adsorption ability of the as-prepared membrane was evaluated with a model anionic dye, Congo red. Adsorption studies show that the removal efficiency of the membrane could be tuned by varying zeolite content, initial concentration of dye, contact time, pH and temperature. Maximum dye adsorption (5.33 mg/g) was observed for 2.5 wt% zeolite loaded membrane, at an initial dye concentration of 10 ppm, pH 3 and temperature 30 °C. The antibacterial efficiency of the membrane against gram-positive (Staphylococcus aureus) and gram-negative bacteria (Escherichia coli) was also reported. The results show that membrane inhibits the growth of both gram-positive and gram-negative bacteria. The adsorption isotherm was studied using two models: Langmuir and Freundlich isotherm. The results show that the experimental data fitted well with Freundlich isotherm with a high correlation coefficient (R2 = 0.998). Meanwhile, the kinetic studies demonstrate that pseudo-second-order (R2 = 0.999) model describe the adsorption of Congo red onto PVA/SA/ZSM-5 zeolite membrane better than pseudo-first-order (R2 = 0.972) and intra particle diffusion model (R2 = 0.91). The experimental studies thus suggest that PVA/SA/ZSM-5 zeolite could be a promising candidate for the removal of Congo red from aqueous solution.

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Section: Resultsmentioning

confidence: 99%

Removal of anionic dye Congo red from aqueous environment using polyvinyl alcohol/sodium alginate/ZSM-5 zeolite membrane

Radoor

Karayil²,

Parameswaranpillai

et al. 2020

Sci Rep

101

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“…In particular, natural CLP is being used in a Site Ion-EXchange effluent Plant SIEXP, City, UK [40]. Several studies were dedicated to assess the potential use of natural and synthetic zeolites as potential materials for radio-contaminants and metal ion removals [67][68][69][70][71][72][73][74][75][76][77][78][79][80][81][82][83][84]. The tested zeolites included natural zeolites, modified natural zeolites, nano-zeolites, and nano-zeolite-composites in the form of magnetic or polymeric materials.…”

Section: Application In Removing Radioactive Contaminantsmentioning

confidence: 99%

“…These results cover the removal of radio-contaminants and carbon dioxide, modification of zolites for its application as catalyst, and ion-exchange/sorption applications, including application of zeolites-nano-composites. Table 5a, b lists the investigations that addressed the use of nano-zeolite in metal removal [68][69][70][71][73][74][75][76][78][79][80][81][82][83][84]. The following remarks could be drawn from the table:…”

Section: Metal Removal Studiesmentioning

confidence: 99%

Applications of Nano-Zeolite in Wastewater Treatment: An Overview

Rahman

El-Kamash

Hung

2022

Water

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Nano-zeolite is an innovative class of materials that received recognition for its potential use in water and tertiary wastewater treatment. These applications include ion-exchange/sorption, photo-degradation, and membrane separation. The aim of this work is to summarize and analyze the current knowledge about the utilization of nano-zeolite in these applications, identify the gaps in this field, and highlight the challenges that face the wide scale applications of these materials. Within this context, an introduction to water quality, water and wastewater treatment, utilization of zeolite in contaminant removal from water was addressed and linked to its structure and the advances in zeolite preparation techniques were overviewed. To have insights into the trends of the scientific interest in this field, an in-depth analysis of the variation in annual research distribution over the last decade was performed for each application. This analysis covered the research that addressed the potential use of both zeolites and nano-zeolites. For each application, the characterization, experimental testing schemes, and theoretical analysis methodologies were overviewed. The results of the most advanced research were collected, summarized, and analyzed to allow an easy visualization and comparison of these research results. Finally, the gaps and challenges that face these applications are concluded.

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“…While the sorption capacity for cadmium was examined compared to nickel ions. The adsorption capacities for Cd 2+ were observed to be much higher than Ni 2+ [ 87 ]. The Adsorption characteristics of various non-carbon nanomaterials have been tabulated in Table 2 .…”

Section: Nanomembranes/fibersmentioning

confidence: 99%

Nanomaterials for the Treatment of Heavy Metal Contaminated Water

et al. 2022

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Nanotechnology finds its application almost in every field of science and technology. At the same time, it also helps to find the solution to various environment-related problems, especially water contamination. Nanomaterials have many advantages over conventional materials, such as high surface area, both polar and non-polar chemistries, controlled and size-tunable, easier biodegradation, which made them ideal candidates for water and environmental remediation as well. Herein, applications of non-carbon nanomaterials, such as layered double hydroxides, iron oxide magnetite nanoparticles, nano-polymer composites, metal oxide nanomaterials and nanomembranes/fibers in heavy metal contaminated water and environmental remediation are reviewed. These non-carbon nanomaterials, due to their tunable unique chemistry and small size have greater potentials for water and environmental remediation applications.

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Polyvinyl Alcohol/Alginate/Zeolite Nanohybrid for Removal of Metals

Cited by 29 publications

References 56 publications

Removal of anionic dye Congo red from aqueous environment using polyvinyl alcohol/sodium alginate/ZSM-5 zeolite membrane

Removal of anionic dye Congo red from aqueous environment using polyvinyl alcohol/sodium alginate/ZSM-5 zeolite membrane

Applications of Nano-Zeolite in Wastewater Treatment: An Overview

Nanomaterials for the Treatment of Heavy Metal Contaminated Water

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