Insight into the performance of novel kaolinite-cellulose/cobalt oxide nanocomposite as green adsorbent for liquid phase abatement of heavy metal ions: Modelling and mechanism

Hussain, Daud; Khan, Suhail Ayoub; Alharthi, Salman S.; Khan, Tabrez Alam

doi:10.1016/j.arabjc.2022.103925

Cited by 25 publications

(5 citation statements)

References 72 publications

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“…Consistent with previous studies, both the total amount of Cr 6 + removed and its adsorption capacity increase over time. Note that the equilibrium time observed in this study is favorably shorter than those reported in some prior works, such as the 50 min observed for a kaolinite cellulose/ cobalt oxide nanocomposite [70] and FeWO 4 /Poly pyrrole nanocomposite (40 min) [71] for confiscation of contaminants.…”

Section: Nanomaterials Dosecontrasting

confidence: 52%

Green Synthesis of ZnO Nanoparticles for Efficient Cr(VI) Removal and Antioxidant/Microbial Properties

Naaz,

Fakhar,

Siddiqui

et al. 2024

ChemistrySelect

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The study focuses on fabrication of a cost‐effective Zinc Oxide nanoparticles (ZnONPs) adsorbent using Syngonium podophyllum leaves extract to remove hexavalent chromium (Cr6+) from synthetically prepared wastewater. Various spectroscopic techniques, including X‐ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X‐ray analysis (EDX), and transmission electron microscopy (TEM), were used to characterize the ZnONPs. Fourier infra‐red spectroscopy (FTIR) detected that various organic compounds like flavonoids, terpenoids, and carboxylic acids acts as stabilizing and capping agent. The batch adsorption study was conducted to investigate the effects of Cr6+ adsorption time, pH, adsorbent concentration, and initial adsorbate concentration. The maximum adsorption capacity was 267.068 mg/g at 313 K. The Freundlich isotherm model was most suitable, indicating multilayer confiscation of Cr6+ on the heterogeneous surface. Chemisorption was identified as the mechanism of sequestration. Thermodynamic studies revealed that Cr6+ removal was spontaneous and feasible, with ΔG° values suggesting predominantly physisorption. Additionally, ZnONPs displayed strong antibacterial activity against S. aureus bacteria, making them a potential alternative to antibiotics. ZnONPs exhibited impressive antioxidant activity. Overall, ZnONPs synthesized through biosynthesis proved to be excellent nano‐sorbents, antioxidants, and biocompatible materials with promising applications in water remediation and healthcare.

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Section: Nanomaterials Dosecontrasting

confidence: 52%

Green Synthesis of ZnO Nanoparticles for Efficient Cr(VI) Removal and Antioxidant/Microbial Properties

Naaz,

Fakhar,

Siddiqui

et al. 2024

ChemistrySelect

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“…The Cr(VI) uptake (q exp ) at breakthrough point increased from 220 to 287 mg/g and at exhaustion point it increased from 333 to 545.2 mg/g. This phenomenon may be due to increased loading of initial metal ion concentration to the adsorption column which rapidly uses the binding sites of adsorbent for surface adsorption indicating that the diffusion process in concentration dependent (Hussain et al 2022). Lower initial metal ion concentration depicted comparatively longer breakthrough point and exhaustion point.…”

Section: Initial Metal Ion Concentrationmentioning

confidence: 99%

Full-factorial design and mathematical models of fixed-bed column adsorption of hexavalent chromium by S. glauca

Banchhor

Pandey

2023

Preprint

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The effective removal of hexavalent chromium is a very important issue for many countries. There is rising interest in the use of inexpensive and widely accessible materials for the adsorption of Cr (VI). Simarouba glauca, a easily available medicinal plant was found to be very effective in removing Cr(VI) from aqueous medium. First part of the study deals with the implementation of 25 Full factorial design technique to investigate adsorption of Cr(VI) onto S. glauca. It aided in the assessment of the main effects and interactions between the dose of S. glauca, pH, temperature, initial Cr(VI) concentration, and time. The adsorption significance was predicted through ANOVA, T-Test, Pareto chart, main effect and interaction plot. The second part of the study deals with the investigating potential of S. glauca by continuous adsorption mode in a fixed-bed column. The effects of Cr(VI) inlet concentration (50,100,150 mg/L), flow rate (13 and 21 mL/min) an S. glauca bed height (30, 36, 40 and 45 cm) on the breakthrough characteristics of the adsorption system were determined. The highest bed capacity of 611.69 mg/g was obtained using 100 mg/L inlet Cr(VI) concentration, 45 cm bed height and 13 mL/min flow rate. Three well-known fixed-bed adsorption models, the Thomas, Yoon-Nelson models and Adam's-Bohart were used to match the adsorption data. With correlation coefficients of 0.99 under various circumstances, the results suit the Thomas and Yoon-Nelson models well. According to this study, we may utilise this method to remediate chromium-contaminated water in industrial settings.

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“…A hydroxyethyl methacrylate modified cellulose nanohybrid (HEMA-CNC) was produced when hydroxyethyl methacrylate was combined with a cellulose nanohybrid using a microwave-assisted grafting copolymerization technique (Gouda & Aljaafari, 2021). Another study shows fabrication of the kaolinite-cellulose and cobalt oxide-based nanohybrid (Kao-Cel/CO 3 O 4 ) (Hussain et al, 2022). Berberis lycium leaf extract was used as a reducing and capping agent for cobalt oxide precipitation in ethanol over kaolinite-cellulose clay (Kao-Cel).…”

Section: Nanohybrids Based On Cellulosementioning

confidence: 99%

Nanobiohybrids using organic nanoparticles for applications in water and wastewater treatment

Priyadarshini,

Neelancherry

2023

Nanobiohybrids for Advanced Wastewater Treatment and Energy Recovery

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To deal with emergencies like water shortages and water pollution, scientists have worked on making materials and technologies that function well enough. The current technologies are not ‘100%’ efficient at providing potable water. Therefore, it is essential to come up with new and better ways to purify water. Nanotechnology offers inventive water treatment techniques. Nanomaterials are fabricated with useful properties for adsorption, catalysis, sensing, and optoelectronics applications, such as reactivity, high-aspect ratio, controlled pore volume as well as electrostatic, hydrophilic, and hydrophobic interactions. Anions, metal ions, microorganisms, and organic compounds can be eliminated using nanoparticles (NPs). Minimal NP concentrations are required for water treatment, making their application cost-effective. Biopolymeric materials have a number of advantages over their synthetic counterparts due to their easy biodegradability and low impact on the environment. Because of their minimum toxicity, improved adsorption capability, excellent biodegradability, significant photocatalytic potential and biocompatibility, nanobiohybrids have a significant role in the field of water and wastewater treatment. This chapter summarizes various production methods of diversified nanobiohybrids synthesized in recent years, with a particular focus on nanobiocomposites.

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Insight into the performance of novel kaolinite-cellulose/cobalt oxide nanocomposite as green adsorbent for liquid phase abatement of heavy metal ions: Modelling and mechanism

Cited by 25 publications

References 72 publications

Green Synthesis of ZnO Nanoparticles for Efficient Cr(VI) Removal and Antioxidant/Microbial Properties

Green Synthesis of ZnO Nanoparticles for Efficient Cr(VI) Removal and Antioxidant/Microbial Properties

Full-factorial design and mathematical models of fixed-bed column adsorption of hexavalent chromium by S. glauca

Nanobiohybrids using organic nanoparticles for applications in water and wastewater treatment

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