Novel sandwich structure adsorptive membranes for removal of 4-nitrotoluene from water

Guo, Yuexin; Jia, Zhiqian

doi:10.1016/j.jhazmat.2016.06.014

Cited by 37 publications

(4 citation statements)

References 33 publications

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“…Chelating membranes offer increased diffusive mass transfer relative to adsorptive resins, , enabling higher throughput and more efficient separations. Recent efforts have studied the removal of boron and toxic organics from water and the recovery of gold, uranium, mercury, and rare earth metals from contaminated waters via chelating membranes enabling capture and release of target solutes. Moreover, some studies have leveraged solute-specific interactions with organic ligands for extraction of lithium into various organic solvents, alcohols, and ionic liquids. , Such ligands include chelating extractants (e.g., crown ethers, cryptands, and β-diketones) and solvating extractants (e.g., trialkylphosphine oxides and phosphates). − …”

Section: Broadening Materials Chemistry In Polymer Membranesmentioning

confidence: 99%

Designing Solute-Tailored Selectivity in Membranes: Perspectives for Water Reuse and Resource Recovery

et al. 2020

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Treatment of nontraditional source waters (e.g., produced water, municipal and industrial wastewaters, agricultural runoff) offers exciting opportunities to expand water and energy resources via water reuse and resource recovery. While conventional polymer membranes perform water/ion separations well, they do not provide solute-specific separation, a key component for these treatment opportunities. Herein, we discuss the selectivity limitations plaguing all conventional membranes, which include poor removal of small, neutral solutes and insufficient discrimination between ions of the same valence. Moreover, we present synthetic approaches for solute-tailored selectivity including the incorporation of single-digit nanopores and solute-selective ligands into membranes. Recent progress in these areas highlights the need for fundamental studies to rationally design membranes with selective moieties achieving desired separations.

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Section: Broadening Materials Chemistry In Polymer Membranesmentioning

confidence: 99%

Designing Solute-Tailored Selectivity in Membranes: Perspectives for Water Reuse and Resource Recovery

et al. 2020

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“…In this figure, the changes of the dimensionless number (C/C 0 , the ratio of the concentration of the solution at the sampling time (C) to the feed concentration (C 0 )) were plotted against the filtered volume ( v ). v b and v s correspond to the volumes at the breakthrough point of adsorption (where the permeate concentration reaches 10% of the feed concentration) and the saturation point of adsorption (where the permeate concentration reaches 80% of the feed concentration), respectively 57,58 . Accordingly, for the neat PES membrane (M14), v b and v s are about 6.5 and 41.4 mL, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…v b and v s correspond to the volumes at the breakthrough point of adsorption (where the permeate concentration reaches 10% of the feed concentration) and the saturation point of adsorption (where the permeate concentration reaches 80% of the feed concentration), respectively. 57,58 Accordingly, for the neat PES membrane (M14), v b and v s are about 6.5 and 41.4 mL, respectively. The addition of GO nanosheets led to an increase in these two values, resulting in v b and v s of about 32.0 and 83.3 mL, respectively, for the optimum PES AMMM (M15).…”

Section: Dynamic Adsorptionmentioning

confidence: 99%

Fabrication optimization of polyethersulfone adsorptive mixed matrix membrane for enhanced dynamic methylene blue removal: Response surface methodology approach

Zangeneh,

Mohammadi,

Zarghami

et al. 2024

Polymer Engineering & Sci

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In the present study, the polyethersulfone (PES)/graphene oxide (GO)/polyethylene glycol 200 (PEG‐200) adsorptive mixed matrix membranes (AMMMs) were fabricated using a non‐solvent induced phase inversion method. According to the design of experiments using response surface methodology (RSM), PES concentration (15, 17.5, and 20%), PEG‐200 concentration as a pore former additive (0.5, 2.5, and 4.5%), and GO nanosheet loading percent (0, 0.5, and 1%) were varied during fabrication. A green solvent, dimethyl sulfoxide, was used as an alternative to conventional solvents, while it exhibited better membrane performance. Methylene blue (MB) removal was optimized in PES AMMM synthesis using RSM. Attenuated total reflectance Fourier transform infrared spectroscope confirmed the presence of GO functional groups in the optimum membrane. Scanning electron microscopy analysis revealed the optimum membrane was thicker than the neat membrane and atomic force microscopy analysis demonstrated higher surface roughness. The membranes hydrophilicity increased, with a decrease in water contact angle from 61.1 ± 0.2° (neat PES) to 54.4 ± 0.9° (optimal membrane). Pure water flux of 524.8 L m−2 h−1 and MB rejection of 97.46% were obtained for the optimum membrane. Furthermore, the optimum PES AMMM demonstrated a greater dynamic adsorption capacity in comparison to the unmodified PES membrane.Highlights The optimization of the polyethersulfone (PES) adsorptive mixed matrix membranes (AMMM) for methylene blue removal was performed utilizing the response surface methodology. The calculation of the dynamic adsorption capacity (DAC) was performed through the breakthrough curves. The integration of graphene oxide into the AMMM resulted in an enhanced DAC of the AMMM. The PES AMMM performance is based on Donnan electrostatic exclusion.

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“…5,[11][12][13] The conventional methods such as chromatography are costly, time consuming and requires expert handling which are the main limitations of the conventional methods. [14][15][16][17][18] The electrochemical methods have received the significant attention because of the decent handling, low cost, simple and rapid sensing response, selectivity, portability and eco-friendliness. 1,6 Previously, Yuan et al, 3 modified ordered mesoporous carbon by using in situ growth of iron-based metal organic framework for the sensing of 4NT.…”

Section: -Nitrophenol (4ntmentioning

confidence: 99%

Hydrothermal Preparation of Manganese Dioxide/Sulfur Doped Reduced Graphene Oxide and Construction of 4-Nitrotoluene Sensor

Khan,

Ahmad,

Khan

et al. 2024

ECS J. Solid State Sci. Technol.

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Nitro-groups containing compounds are widely used in various applications but are considered highly toxic compounds. 4-nitrotoluene (4NT) belongs to the nitro-aromatic compounds and is a highly hazardous water contaminant. Thus, exploring new materials with excellent physiochemical and electrochemical properties is desirable for the construction of efficient 4NT sensors. The present study reports the fabrication of manganese dioxide/sulfur-doped reduced graphene oxide (α-MnO2/S@rGO) via hydrothermal synthesis procedure. The well-characterized α-MnO2/S@rGO was employed as a catalyst for the construction of α-MnO2/S@rGO modified screen printed carbon electrode (SPCE) for the detection of 4NT using cyclic voltammetry (CV). The α-MnO2/S@rGO modified electrode exhibits good electro-catalytic properties for the detection of 4NT compared to the bare SPCE, α-MnO2-, or S@rGO-modified electrodes. A reasonable detection limit of 0.5 μM with sensitivity of 1.97 μA.μM−1.cm−2 was obtained using α-MnO2/S@rGO modified electrode. The α-MnO2/S@rGO modified electrode demonstrated considerable selectivity for the sensing of 4NT in presence of various electro-active species. Note that the combination of catalytic α-MnO2 and conductive S@rGO present excellent synergistic interactions which improved the performance of the α-MnO2/S@rGO-modified electrode.

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Novel sandwich structure adsorptive membranes for removal of 4-nitrotoluene from water

Cited by 37 publications

References 33 publications

Designing Solute-Tailored Selectivity in Membranes: Perspectives for Water Reuse and Resource Recovery

Designing Solute-Tailored Selectivity in Membranes: Perspectives for Water Reuse and Resource Recovery

Fabrication optimization of polyethersulfone adsorptive mixed matrix membrane for enhanced dynamic methylene blue removal: Response surface methodology approach

Hydrothermal Preparation of Manganese Dioxide/Sulfur Doped Reduced Graphene Oxide and Construction of 4-Nitrotoluene Sensor

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