Synthesis and characterization of a new hybrid polymer composite (pollene@polyacrylamide) and its applicability in uranyl ions adsorption

Şenol, Zeynep Mine; Keskin, Zehra Seba; Şimşek, Selçuk

doi:10.1007/s10967-023-08820-9

Cited by 15 publications

(5 citation statements)

References 26 publications

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“…Thermodynamic parameters are calculated as shown in Table 8. Adsorption in the case of all adsorbents was a spontaneous process according, as shown by the negative values of ∆G • [57,58]. The positive values of ∆S • demonstrate that the adsorption process increased the randomness at the interface of the solid/solution system [58].…”

Section: Thermodynamic Studiesmentioning

confidence: 88%

Manganese Adsorption onto Permanganate-Modified Bamboo Biochars from Groundwater

2023

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Potassium permanganate-modified bamboo biochar (MBB) was used to adsorb manganese from simulated groundwater and its performance was compared to that of unmodified bamboo biochar (BB), activated carbon, and manganese greensand. The adsorption kinetics, adsorption isotherms, and manganese fractions were investigated. The Langmuir model was the best fit for manganese adsorption by MBB and BB at the maximum adsorption capacities of 21.277 and 0.803 mg g−1, respectively. The heat of adsorption from the Temkin model indicated that manganese adsorption occurs via an ion exchange process for MBB and a physical adsorption process for BB. The sequential extraction results revealed that manganese was strongly bound to the iron/manganese oxide fraction, in accordance with the chemical adsorption established in pseudo-second order kinetic data records.

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Section: Thermodynamic Studiesmentioning

confidence: 88%

Manganese Adsorption onto Permanganate-Modified Bamboo Biochars from Groundwater

2023

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“…• K ad = Dubinin-Radushkevich isotherm constant (mol 2 /kJ 2 ) and • ε = Dubinin-Radushkevich isotherm constant 63 .…”

Section: Dubinin Radushkevich Isothermmentioning

confidence: 99%

“…The constants such as q s , and K ad were calculated from the appropriate plot using equation No. 11 63 . From the linear plot of DRK model, q s was determined to 55.3 mg/g, the mean free energy, E = 0.7 kJ/mol indicates a physiosorption process with the R 2 = 0.5125.…”

Section: Dubinin Radushkevich Isothermmentioning

confidence: 99%

Facile synthesis of anthranilic acid based dual functionalized novel hyper cross-linked polymer for promising CO2 capture and efficient Cr3+ adsorption

Abid,

Raza,

Qureshi

et al. 2024

Sci Rep

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A novel hyper cross-linked polymer of 2-Aminobenzoic acid (HCP-AA) is synthesized for the adsorption of Cr3+ and CO2. The Brunauer–Emmett–Teller surface area of HCP-AA is 615 m2 g−1. HCP-AA of particle size 0.5 nm showed maximum adsorption of Cr3+ for lab prepared wastewater (93%) while it was 88% for real industrial wastewater. It is might be due to electrostatic interactions, cation-π interactions, lone pair interactions and cation exchange at pH 7; contact time of 8 min; adsorbent dose 0.8 g. The adsorption capacity was calculated 52.63 mg g−1 for chromium metal ions at optimum conditions. Freundlich isotherm studies R2 = 0.9273 value is the best fit and follows pseudo second order kinetic model (R2 = 0.979). The adsorption is found non-spontaneous and exothermic through thermodynamic calculations like Gibbs free energy (ΔG), enthalpy change (ΔH) and entropy change (ΔS) were 6.58 kJ mol−1, − 60.91 kJ mol−1 and − 45.79 kJ mol−1 K−1, respectively. The CO2 adsorption capacity of HCP-AA is 1.39 mmol/g with quantity of 31.1 cm3/g (6.1 wt%) at 273Kwhile at 298 K adsorption capacity is 1.12 mmol/g with quantity 25.2 cm3/g (5 wt%). Overall, study suggests that carboxyl (–COOH) and amino (–NH2) groups may be actively enhancing the adsorption capacity of HCP-AA for Cr3+ and CO2.

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“…14 Adsorption using materials including zeolites or activated carbon is efficient and cost-effective but faces challenges in terms of adsorbent regeneration and disposal. [15][16][17] The best method for Hg 2+ removal depends on various factors including concentration, efficiency, environmental impact and cost. [18][19][20][21][22][23][24][25][26] Functionalized ligand sorbents, acting like micro-sponges to capture heavy metals, are promising due to their operational simplicity, cost-effectiveness and regenerative ability.…”

Section: Introductionmentioning

confidence: 99%

“…Electrochemical approaches require specialized equipment and labor, 7,13 while photocatalysis, although innovative, depends on specific light sources and may not be fast 14 . Adsorption using materials including zeolites or activated carbon is efficient and cost‐effective but faces challenges in terms of adsorbent regeneration and disposal 15‐17 . The best method for Hg 2+ removal depends on various factors including concentration, efficiency, environmental impact and cost 18‐26 .…”

Section: Introductionmentioning

confidence: 99%

Ion‐imprinted thiosalicylichydrazide‐based sorbents for selective recognition of mercury(II) ions

Alenazi,

Alamrani,

Almutairi

et al. 2024

J of Chemical Tech & Biotech

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BackgroundThe study of removing heavy metals from water through the use of chelating absorbents is an emerging and critical area of research. However, the challenge lies in the lack of specificity that these absorbents often exhibit towards individual metals.ResultsIn addressing this challenge, we have synthesized a novel chelating polymer, thiosalicylic hydrazidine‐modified poly(acrylonitrile‐co‐divinylbenzene) copolymer (TSH‐P), demonstrating a high affinity for Hg2+ ions. The cross‐linking of the Hg2+/TSH‐P complex with a glyoxal cross‐linking agent effectively encapsulates Hg2+ ions, stabilizing the functional chelating groups within the coordination geometry of Hg2+. The ions were subsequently removed with EDTA/HNO3, producing a sorbent imprinted with Hg2+ ions (Hg‐IIP). Analytical techniques such as FTIR, NMR, XPS, and SEM were employed for a detailed examination of each synthesis step, confirming the successful chelation of Hg2+. Notably, the synthesized Hg‐IIP showed significant selectivity for Hg2+ over other metal cations, with an optimal absorption pH of 5 and a maximum capacity of 350 mg/g. The adsorption process was found to closely follow the Langmuir isotherm model, with kinetics that adhered to the pseudo‐second‐order model.ConclusionThis study introduces a highly selective chelating polymer for the removal of Hg2+ ions from water, highlighting its effectiveness and potential for specificity in heavy metal remediation. The use of analytical techniques to confirm the successful synthesis and chelation process, alongside the demonstrated selectivity and high capacity of the sorbent, underscores the polymer's utility in addressing the challenge of removing heavy metals from aqueous solutions.This article is protected by copyright. All rights reserved.

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Synthesis and characterization of a new hybrid polymer composite (pollene@polyacrylamide) and its applicability in uranyl ions adsorption

Cited by 15 publications

References 26 publications

Manganese Adsorption onto Permanganate-Modified Bamboo Biochars from Groundwater

Manganese Adsorption onto Permanganate-Modified Bamboo Biochars from Groundwater

Facile synthesis of anthranilic acid based dual functionalized novel hyper cross-linked polymer for promising CO2 capture and efficient Cr3+ adsorption

Ion‐imprinted thiosalicylichydrazide‐based sorbents for selective recognition of mercury(II) ions

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