A kinetic and mechanistic study of adsorptive removal of metal ions by imidazole-functionalized polymer graft banana fiber

Selambakkannu, Sarala; Othman, Nor Azillah Fatimah; Bakar, Khomsaton Abu; Shukor, Shakirah Abdul; Karim, Zulhairun Abdul

doi:10.1016/j.radphyschem.2018.09.012

Cited by 38 publications

(9 citation statements)

References 42 publications

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“…Among all the functionalization precursor agents, amine had imposed strong chelating properties towards transition metals. Previously, numerous studies that applied substrates such as cellulose [6], polystyrene [7], polyethylene non-woven fabrics [4], polyglycidyl methacrylate (PGMA) [8], and composite materials [9]. These materials had been functionalized with various amines to prepare an adsorbent for the application of recovering heavy metal ions from aqueous solution [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Selectivity of Copper by Amine-Based Ion Recognition Polymer Adsorbent with Different Aliphatic Amines

et al. 2019

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This paper investigates the selectivity of GMA-based-non-woven fabrics adsorbent towards copper ion (Cu) functionalized with several aliphatic amines. The aliphatic amines used in this study were ethylenediamine (EDA), diethylenetriamine (DETA), triethylenetetramine (TETA), and tetraethylenepentamine (TEPA). The non-woven polyethylene/polypropylene fabrics (NWF) were grafted with glycidyl methacrylate (GMA) via pre-radiation grafting technique, followed by chemical functionalization with the aliphatic amine. To prepare the ion recognition polymer (IRP), the functionalized amine GMA-grafted-NWF sample was subjected to radiation crosslinking process along with the crosslinking agent, divinylbenzene (DVB), in the presence of Cu ion as a template in the matrix of the adsorbent. Functionalization with different aliphatic amine was carried out at different amine concentrations, grafting yield, reaction temperature, and reaction time to study the effect of different aliphatic amine onto amine density yield. At a concentration of 50% of amine and 50% of isopropanol, EDA, DETA, TETA, and TEPA had attained amine density around 5.12, 4.06, 3.04, and 2.56 mmol/g-ad, respectively. The amine density yield decreases further as the aliphatic amine chain grows longer. The experimental condition for amine functionalization process was fixed at 70% amine, 30% isopropanol, 60 °C for grafting temperature, and 2 h of grafting time for attaining 100% of grafting yield (Dg). The prepared adsorbents were characterized comprehensively in terms of structural and morphology with multiple analytical tools. An adsorptive removal and selectivity of Cu ion by the prepared adsorbent was investigated in a binary metal ion system. The IRP samples with a functional precursor of EDA, the smallest aliphatic amine had given the higher adsorption capacity and selectivity towards Cu ion. The selectivity of IRP samples reduces as the aliphatic amine chain grows longer, EDA to TEPA. However, IRP samples still exhibited remarkably higher selectivity in comparison to the amine immobilized GMA-g-NWF at similar adsorption experimental conditions. This observation indicates that IRP samples possess higher selectivity after incorporation of the ion recognition imprint technique via the radiation crosslinking process.

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Section: Introductionmentioning

confidence: 99%

Selectivity of Copper by Amine-Based Ion Recognition Polymer Adsorbent with Different Aliphatic Amines

et al. 2019

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“…The zero charge point (pH PZC ) was determined according to the pH drift method [36]. A volume of 0.5 g of YM was added to 50 mL of ultra-pure water.…”

Section: Discussionmentioning

confidence: 99%

Yerba Mate (Ilex paraguarensis) as Bio-Adsorbent for the Removal of Methylene Blue, Remazol Brilliant Blue and Chromium Hexavalent: Thermodynamic and Kinetic Studies

Mazzeo

Bavasso

Bracciale

et al. 2020

Water

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Yerba mate (Ilex paraguarensis, YM) was used as biomaterial for the removal of anionic and cationic compounds from wastewater. Chromium hexavalent Cr(VI), Remazol brilliant blue (RBB) and methylene blue (MB) were selected as pollutants. A calcination step was performed after the washing and drying steps to evaluate its effectiveness at increasing the adsorption capacity of the solid. Both YM and calcinated YM (CYM) were characterized by means of scanning electron microscopy (FE-SEM), Fourier transform infrared spectroscopy (FT-IR) and Brunauer–Emmett–Teller (BET) analysis. Adsorption batch tests revealed that YM was ineffective for the removal of Cr(VI) and RBB, while good results were obtained for MB (up to 80%) without pH dependency of the adsorption process, and CYM was able to remove Cr(VI) (up to 77%) and RBB (up to 65%) but not MB. The adsorption isotherm of MB on YM at 298 K was obtained experimentally and it is well represented by the Langmuir isotherm. YM’s adsorption capacity for MB was estimated to be 59.6 mg/g. Kinetic batch tests were conducted and the experimental results were fitted with a mathematical model. The low influence of temperature compared to the influence of the YM concentration on the adsorption rate was explained.

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“…Below the pHpzc, the surface of MnFe 2 O 4 nanoparticles is positively charged, and lead(II) results in electrostatic repulsion. At pH higher than pHpzc, the surface of MnFe 2 O 4 nanoparticles is negatively charged, increasing the adsorption with positively charged lead(II) species (Selambakkannu et al 2018).…”

Section: Effect Of Initial Ph On Sorptionmentioning

confidence: 99%

Magnetically synthesized MnFe2O4 nanoparticles as an effective adsorbent for lead ions removal from an aqueous solution

Hassan

Aly

2021

Journal of Water Supply: Research and Technology-Aqua

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The adsorption behavior of lead(II) using a new magnetic adsorbent is investigated. The facile synthesis of MnFe2O4 was carried out using the co-precipitation method. The different parameters that affected the adsorption process were investigated such as contact time, metal ion concentration, pH, temperature, and the adsorbent dosage. The maximum lead(II) sorption capacity was found to be 75.75 (mg/g) and obtained using 1 g/L MnFe2O4 when pH equals 5.3, a temperature of 25 °C, and contact time as 60 min. The adsorption isotherm study indicated that the Langmuir model was the best model that described the adsorption process using 1 g/L MnFe2O4. Based on the values of correlation coefficient data (R2), the kinetic adsorption parameters were well defined by the second-order kinetic model. Furthermore, the temperature effect findings have been confirmed that the removal of lead ions was endothermic. The desorption efficiency reached more than 88% when used 0.01 M NaOH as an eluent.

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A kinetic and mechanistic study of adsorptive removal of metal ions by imidazole-functionalized polymer graft banana fiber

Cited by 38 publications

References 42 publications

Selectivity of Copper by Amine-Based Ion Recognition Polymer Adsorbent with Different Aliphatic Amines

Selectivity of Copper by Amine-Based Ion Recognition Polymer Adsorbent with Different Aliphatic Amines

Yerba Mate (Ilex paraguarensis) as Bio-Adsorbent for the Removal of Methylene Blue, Remazol Brilliant Blue and Chromium Hexavalent: Thermodynamic and Kinetic Studies

Magnetically synthesized MnFe2O4 nanoparticles as an effective adsorbent for lead ions removal from an aqueous solution

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