Adsorption of Chromium Ions from Aqueous Solutions by Synthesized Nanoparticles

Kandasamy, Senthilkumar; Velusamy, Sampathkumar; Thirumoorthy, Pradeep; Mageshkumar, P.; SenthilkumarVeerasamy,; Gopalakrishnan, K.; Sathish, U.; Kiramani, Vallarasu; Antrini, Fathima Darras Gracy; Periyasamy, Selvakumar

doi:10.1155/2022/6214438

Cited by 17 publications

(7 citation statements)

References 22 publications

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“…From the graph, it is clear that the zone of inhibitions gets increased with the increase in the concentration of ZnO Nanoparticles which in turn, makes the higher concentrations of synthesised nanoparticles to have a better antibacterial activity. Also the gram positive bacteria namely Escherichia Coli and Salmonella Typhi have showed better growth comparing to the other gram-positive and gram-negative bacteria [37,38].…”

Section: Figure -9 Inhibition Zones Comparison Chartmentioning

confidence: 96%

GREEN SYNTHESIS AND CHARACTERISATION OF ZnO NANOPARTICLES FROM MANIHOT ESCULENTA (CASSAVA) PEEL AND THEIR ANTIBACTERIAL STUDY

2022

Global NEST: The International Journal

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<p>A technique for green manufacturing of zinc oxide based nanoparticles utilising cassava peel has been approached in this research for antibacterial investigation. Especially, the cassava peel is an agro waste from starch and food processing industries and the extract of Cassava peel is used for synthesising the zinc oxide nanoparticles (ZnO-NPs). The peel based zinc oxide nanoparticles were synthesized using bioreduction method. The plasmon peak from UV–Visible spectroscopy is observed at 380 nm, while the XRD shows an average crystallite size of 67.31nm with hexagonal structure and also the stability of bio synthesised nanoparticles are confirmed by FTIR study. Additionally, FESEM confirms the structure is found to be spherical whereas Zeta potential analysis has confirmed the nanoparticles have a stable and well-dispersed form. Furthermore, the anti bacterial study against bio synthesized ZnO-NPs is carried out for both gram positive and gram negative bacteria. Therefore, the results proved that the bacteria are found to be more active against the synthesized nanoparticles.</p>

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Section: Figure -9 Inhibition Zones Comparison Chartmentioning

confidence: 96%

GREEN SYNTHESIS AND CHARACTERISATION OF ZnO NANOPARTICLES FROM MANIHOT ESCULENTA (CASSAVA) PEEL AND THEIR ANTIBACTERIAL STUDY

2022

Global NEST: The International Journal

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“…Plotting q e versus t / q t should reveal a specific relation. Using slope (1/ Q m ) and intercept, we can calculate the amount of adsorbed adsorbate at equilibrium to obtain the rate constant “ k 2 ” . Here, Q m is the maximum adsorption capacity of the adsorbent.…”

Section: Adsorption Of Heavy-metal Ionsmentioning

confidence: 99%

Study of Kinetics and the Working Mechanism of Silica-Coated Amino-Functionalized CoFe₂O₄ Ferrite Nanoparticles to Treat Wastewater for Heavy Metals

Saleem,

Hussain,

Shukrullah

et al. 2024

ACS Omega

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This study used a simple coprecipitation method to produce pristine, silica-coated, and amino-functionalized CoFe 2 O 4 nanoadsorbents. Amino-functionalization was done to increase the active surface area and metal ion removal efficiency. Both pristine and functionalized adsorbents were employed to recover Pb(II), Zn(II), and Cu(II) ions from wastewater. The adsorption tests were performed by varying the initial concentration of metal ions and contact time at a fixed pH of 6.5. Atomic adsorption spectroscopy was utilized to detect the proportion of metals removed from water. Additionally, the pseudo-first-order, pseudo-second-order, Freundlich, and Langmuir models were employed to compute the kinetic and isothermic data from metal ion adsorption onto the adsorbents. The amino-functionalized adsorbent showed adsorption capacities of 277.008, 254.453, and 258.398 mg/g for Cu(II), Pb(II), and Zn(II) ions, respectively. According to the adsorption results, the Langmuir isotherm and the pseudo-second-order model best suit the data. The best fitting of the pseudo-second-order model with the data indicates that coordinative interactions between amino groups and metal ions are responsible for chemisorption. The metal ions bind with − NH 2 groups on the adsorbent surface through chelate bonds. Chelate bonds are extremely strong and stable, indicating the effectiveness of the CoFe 2 O 4 @SiO 2 −NH 2 adsorbent in adsorbing heavy-metal ions. The tested adsorbent exhibited good performance, batter stability, and good reusable values around 77, 81, and 76% for Cu(II), Pb(II), and Zn(II) ions, respectively, after five adsorption cycles.

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“…Fourier transform infrared (FTIR) analysis was performed (SHIMADZU) in a scan range from 400 to 4000 cm −1 . e peak values of control and test extracts were recorded [22,23].…”

Section: Ftirmentioning

confidence: 99%

Enhanced Biodegradation of Battery-Contaminated Soil Using Bacillus sp. (MZ959824) and Its Phytotoxicity Study

Harshavardhan¹,

Subbaiyan²,

Vasavi³

et al. 2022

Advances in Materials Science and Engineering

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Batteries that have been used and thrown away are potential threats to the environment. The aim of the present study is to explore the bacterial bioremediation of the battery-contaminated soil. The battery contaminated soil sample was collected from the municipal compost yard, Vellalore, Coimbatore, Tamil Nadu, India. The Bacillus sp was isolated by the serial dilution method. The Bacillus strain was identified based on the colony morphology as well as the 16s ribosomal ribonucleic acid partial gene sequence and was designated the name HVRCBNR. It was deposited in the GenBank under the accession number Bacillus sp MZ959824. The bacterial growth was evaluated by measuring the optical density of the media (OD600), while the degradation was determined by FTIR analysis. The phytotoxic analysis was performed using Trigonella foenum-graecum to assess the toxicity of the battery waste before and after bacterial treatment. The spectroscopic study showed that the strain HVRCBNR achieved 83.6% degradation. The growth indexes of Trigonella foenum-graecum showed that the biodegraded soil was nonphytotoxic in comparison with the control. This study supports the degradability of the strain HVRCBNR, and this could pave a way for sustainable solution to battery contaminated soil treatment.

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Adsorption of Chromium Ions from Aqueous Solutions by Synthesized Nanoparticles

Cited by 17 publications

References 22 publications

GREEN SYNTHESIS AND CHARACTERISATION OF ZnO NANOPARTICLES FROM MANIHOT ESCULENTA (CASSAVA) PEEL AND THEIR ANTIBACTERIAL STUDY

GREEN SYNTHESIS AND CHARACTERISATION OF ZnO NANOPARTICLES FROM MANIHOT ESCULENTA (CASSAVA) PEEL AND THEIR ANTIBACTERIAL STUDY

Study of Kinetics and the Working Mechanism of Silica-Coated Amino-Functionalized CoFe₂O₄ Ferrite Nanoparticles to Treat Wastewater for Heavy Metals

Enhanced Biodegradation of Battery-Contaminated Soil Using Bacillus sp. (MZ959824) and Its Phytotoxicity Study

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Adsorption of Chromium Ions from Aqueous Solutions by Synthesized Nanoparticles

Cited by 17 publications

References 22 publications

GREEN SYNTHESIS AND CHARACTERISATION OF ZnO NANOPARTICLES FROM MANIHOT ESCULENTA (CASSAVA) PEEL AND THEIR ANTIBACTERIAL STUDY

GREEN SYNTHESIS AND CHARACTERISATION OF ZnO NANOPARTICLES FROM MANIHOT ESCULENTA (CASSAVA) PEEL AND THEIR ANTIBACTERIAL STUDY

Study of Kinetics and the Working Mechanism of Silica-Coated Amino-Functionalized CoFe2O4 Ferrite Nanoparticles to Treat Wastewater for Heavy Metals

Enhanced Biodegradation of Battery-Contaminated Soil Using Bacillus sp. (MZ959824) and Its Phytotoxicity Study

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Product

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Study of Kinetics and the Working Mechanism of Silica-Coated Amino-Functionalized CoFe₂O₄ Ferrite Nanoparticles to Treat Wastewater for Heavy Metals