Optimization of Pervaporative Desalination with Zirconia Based Metal Organic Framework Filled Nanocomposite Membrane

Ünügül, Tuba; Nigiz, Filiz Uğur; Karakoca, Betül

doi:10.1007/s10924-023-02879-x

Cited by 2 publications

References 63 publications

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Enhanced Sodium Alginate Membranes Modified with Metal–Organic Frameworks Based on Zirconium for Energy-Efficient Isopropanol Dehydration by Pervaporation

Dubovenko,

Kuzminova,

Dmitrenko

et al. 2024

ACS Appl. Polym. Mater.

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The zirconium-based metal−organic framework (Zr-MOF) class presents promising modifiers with excellent water stability and adsorption ability for the development of pervaporation mixed matrix membranes (MMMs). Thus, in this study, the effect of the introduction of Zr-MOF MIL-140A with various ligands into sodium alginate (SA) was investigated in order to develop mixed matrix membranes with enhanced characteristics for pervaporation dehydration. The improved SA membrane characteristics were achieved by the variation of MIL-140A concentration (2−5 wt %), different ligands in its structure (MIL-140A-AcOH, MIL-140A-AcOH-EDTA), and CaCl 2 crosslinking. The prepared Zr-MOF, composites, and membranes were characterized using attenuated total reflectance-Fourier transform infrared spectroscopy, analysis of low-temperature nitrogen adsorption, scanning electron microscopy, atomic force microscopy, Xray diffraction analysis, thermogravimetric analysis, and contact angle and liquid uptake measurements. The transport properties of the membranes were tested in the pervaporation dehydration of isopropanol (IPA). The results from quantum chemical computational experiments were employed to explain the observed changes and interactions. It was shown that the modification of the SA matrix with these Zr-MOFs led to the improvement of the pervaporation performance, in particular the permeation flux, due to their unique porous structure, functional groups, and favorable interaction with components of the feed. The SA+MIL-140A(4%) membrane cross-linked with CaCl 2 exhibited the best transport characteristics in the pervaporation dehydration of isopropanol (12− 70 wt % water): the highest permeation flux of 200−540 g m −2 h −1 maintaining 99.99 wt % water content in the permeate.

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Enhanced Sodium Alginate Membranes Modified with Metal–Organic Frameworks Based on Zirconium for Energy-Efficient Isopropanol Dehydration by Pervaporation

Dubovenko,

Kuzminova,

Dmitrenko

et al. 2024

ACS Appl. Polym. Mater.

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Statistical Optimization of Operational Parameters on Congo Red Adsorption Using Upscaled Polystyrene

Regi,

Selvam

2024

Preprint

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Plastic pollution, particularly from non-biodegradable materials like polystyrene waste, remains a significant environmental concern. Additionally, water contamination with toxic dyes poses a grave threat to nature. To address these issues, waste polystyrene (thermocol) was chemically modified to create an effective dye adsorbent capable of removing harmful Congo Red (CR) dye from water-based media. Utilizing Box Behnken Design-Response Surface methodology (BBD-RSM), adsorption parameters such as adsorbent dose, pH, and contact duration were optimized. Remarkably high levels of adsorption were achieved under the following conditions: adsorbent dosage (0.02 g), pH (4), and contact duration (120 min), resulting in a removal efficiency of 98.9%. The pseudo-second-order model best described adsorption kinetics, and Langmuir isotherm analysis indicated a maximum adsorption capacity of 189.2 mg/g, with thermodynamic experiments confirming the endothermic nature of adsorption. Possible adsorption mechanisms for CR dye on adsorbent were suggested from the characterization results. To minimize solid waste from the CR-loaded adsorbent, it was processed with commercial Acrylonitrile Butadiene Styrene (ABS) through extrusion, yielding 3D printing filaments. Remarkably, these filaments maintained tensile strength and exhibited no dye leaching in aqueous environments. The synthesized adsorbent is effective in removing toxic dyes from water and offers a potential solution for managing Expanded Polystyrene (EPS) solid waste. This research contributes to sustainable practices by recovering waste materials and presents a promising approach for environmental remediation.

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Optimization of Pervaporative Desalination with Zirconia Based Metal Organic Framework Filled Nanocomposite Membrane

Cited by 2 publications

References 63 publications

Enhanced Sodium Alginate Membranes Modified with Metal–Organic Frameworks Based on Zirconium for Energy-Efficient Isopropanol Dehydration by Pervaporation

Enhanced Sodium Alginate Membranes Modified with Metal–Organic Frameworks Based on Zirconium for Energy-Efficient Isopropanol Dehydration by Pervaporation

Statistical Optimization of Operational Parameters on Congo Red Adsorption Using Upscaled Polystyrene

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