Ionic liquid based nanoporous organosilica supported propylamine as highly efficient adsorbent for removal of congo red from aqueous solution

Shojaeipoor, Frood; Elhamifar, Dawood; Masoumi, Bakhshali; Elhamifar, Davar; Barazesh, Behnaz

doi:10.1016/j.arabjc.2016.05.001

Cited by 12 publications

(3 citation statements)

References 61 publications

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“…The adsorption efficiency of QVP/AAm-Fe 3 O 4 nanocomposite was compared with other sorbents as shown in Table 4. The present adsorbent shows higher adsorption capacity in a shorter time when comparing with other adsorbents [57,58,59,60,61]. QVP/AAm-Fe 3 O 4 nanocomposite exhibited high adsorption capacity because of the porous framework and the presence of quaternary ammonium salt in the polymer backbone that interacts with the CR dye.…”

Section: Resultsmentioning

confidence: 84%

Synthesis of New Magnetic Crosslinked Poly (Ionic Liquid) Nanocomposites for Fast Congo Red Removal from Industrial Wastewater

et al. 2019

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Advanced materials reliant on cross-linked magnetic poly (ionic liquids) (PILs) have been widely utilized in environmental applications for water purification. The present work demonstrates our preparation of a new magnetic cross-linked PIL based on quaternized 4-vinyl-pyridine-co-acrylamide (QVP/AAm). The chemical composition, thermal stability, magnetic properties, morphology, particle sizes, and zeta potential of the magnetic QVP/AAm composites were investigated. Fast adsorption and desorption kinetics, high adsorption capacity, rapid magnetic separation, and the absence of secondary pollution in the adsorption process make QVP/AAm-Fe3O4 a highly effective adsorbent for the elimination of anionic acidic Congo red contaminants from industrial wastewater.

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Section: Resultsmentioning

confidence: 84%

Synthesis of New Magnetic Crosslinked Poly (Ionic Liquid) Nanocomposites for Fast Congo Red Removal from Industrial Wastewater

et al. 2019

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“…The shift in hydroxide bands toward lower wavenumber, that is, from 3407 to 3380 cm À1 , can be ascribed to the Hbonding between hydroxyl groups of Zn/Cu LDH and nitrogen/oxygen-containing groups of dye. Furthermore, the decrease in intensity of the strong absorption band of acetate ions was observed, which may be due to the pTSA-Pani@GO-CNT -26.8 300 5 [40] Chitosan hydrogel beads impregnated with CNT -450.4 360 5 [41] ILNO-NH 2 97 43.10 30 4 [42] Zeolite/algae composite (ZPG) 78.89 11.26 480 7 [43] Fly ash -22.12 180 Natural pH of dye [3] Cashew net shell 98.52 5.184 120 2 [44] Cu-Ca-Al-LDH/gellan gum nanocomposite -100 60 5 [45] Acetate intercalated Zn/Cu LDH >99 167.22 4 7 Present work…”

Section: Mechanism Of Adsorptionmentioning

confidence: 99%

Statistical optimization of process parameters for ultrafast uptake of anionic azo dyes by efficient sorbent: Zn/Cu layered double hydroxide

Pandey

Singh

2023

Applied Organom Chemis

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The extensive use and release of synthetic dyes by various industries is a primary cause of contamination of water resources. Herein, the adsorption efficiency of Zn/Cu layered double hydroxide (LDH) was estimated for the uptake of a series of anionic dyes, out of which maximum removal efficiency was observed for Congo red (CR) dye. The effect of processing parameters, mainly adsorbate and adsorbent concentration, contact time, and pH on the adsorption capacity of CR dye, was analyzed by making use of response surface methodology (RSM). Based on the analysis of variance and experimental results, the modified quadratic regression model was found to be statistically acceptable. Further, the ultrafast removal efficiency of the synthesized material was observed with the maximum percentage removal of dye (>99%) within 4 min of contact time. In addition, batch adsorption experiments were conducted under the optimized reaction conditions for equilibrium and kinetic studies. Langmuir isotherm (R2 = 0.9965) and pseudo‐second‐order model (R2 = 1.0) were found to be the best‐fitted isotherm and kinetic models, respectively. Using Langmuir isotherm, the maximum adsorption capacity of the sorbent was calculated to be 167.22 mg/g. Furthermore, the adsorbent exhibited excellent regeneration capability and can be used efficiently for up to three cycles with >90% dye removal. The adsorption behavior of Zn/Cu LDH in different water matrices, that is, tap water, groundwater, and textile wastewater, was also investigated suggesting it to be an excellent adsorbent for real‐time applications.

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“…Recently, ionic liquids (ILs) have received high attention as alternative solvents in view of their remarkable characteristics including negligible vapour pressure, low volatility, high thermal stability and good reusability. As a result, the applications of ILs have been extensively studied in fuel cells, catalysis, nuclear systems and environmental sustainability in recent years [15][16][17][18][19][20][21]. Although ILs have emerged as effective solvents for the extraction/removal of toxic organic pollutants and dyes from contaminated waters, most ILs are viscous and possess considerable solubility in water [22].…”

Section: Introductionmentioning

confidence: 99%

Cross-Linked Ionic Liquid Polymer for the Effective Removal of Ionic Dyes from Aqueous Systems: Investigation of Kinetics and Adsorption Isotherms

Reddy¹,

Rafiq

Ahmad

et al. 2022

Molecules

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In the current study, we have synthesized an imidazolium based cross-linked polymer, namely, 1-vinyl-3-ethylimidazolium bis(trifluoromethylsulfonyl)imide (poly[veim][Tf2N]-TRIM) using trimethylolpropane trimethacrylate as cross linker, and demonstrated its efficiency for the removal of two extensively used ionic dyes—methylene blue and orange-II—from aqueous systems. The detailed characterization of the synthesized poly[veim][Tf2N]-TRIM was performed with the help of 1H NMR, TGA, FT-IR and FE-SEM analysis. The concentration of dyes in aqueous samples before and after the adsorption process was measured using an UV-vis spectrophotometer. The process parameters were optimised, and highest adsorption was obtained at a solution pH of 7.0, adsorbent dosage of 0.75 g/L, contact time of 7 h and dye concentrations of 100 mg/L and 5.0 mg/L for methylene blue and orange-II, respectively. The adsorption kinetics for orange-II and methylene blue were well described by pseudo-first-order and pseudo–second-order models, respectively. Meanwhile, the process of adsorption was best depicted by Langmuir isotherms for both the dyes. The highest monolayer adsorption capacities for methylene blue and orange-II were found to be 1212 mg/g and 126 mg/g, respectively. Overall, the synthesized cross-linked poly[veim][Tf2N]-TRIM effectively removed the selected ionic dyes from aqueous samples and provided >90% of adsorption efficiency after four cycles of adsorption. A possible adsorption mechanism between the synthesised polymeric adsorbent and proposed dyes is presented. It is further suggested that the proposed ionic liquid polymer adsorbent could effectively remove other ionic dyes and pollutants from contaminated aqueous systems.

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Ionic liquid based nanoporous organosilica supported propylamine as highly efficient adsorbent for removal of congo red from aqueous solution

Cited by 12 publications

References 61 publications

Synthesis of New Magnetic Crosslinked Poly (Ionic Liquid) Nanocomposites for Fast Congo Red Removal from Industrial Wastewater

Synthesis of New Magnetic Crosslinked Poly (Ionic Liquid) Nanocomposites for Fast Congo Red Removal from Industrial Wastewater

Statistical optimization of process parameters for ultrafast uptake of anionic azo dyes by efficient sorbent: Zn/Cu layered double hydroxide

Cross-Linked Ionic Liquid Polymer for the Effective Removal of Ionic Dyes from Aqueous Systems: Investigation of Kinetics and Adsorption Isotherms

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