Hybrid Na-A zeolite/oxycut residue thin film composite nanofiltration membrane for Cr (III) removal

García-Chirino, Julieta; Jiménez, Alicia Dáder; Bruggen, Bart Van der

doi:10.1016/j.jece.2023.109351

Cited by 8 publications

(4 citation statements)

References 72 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The incorporation of hydrophilic substance in the support membrane can accelerate the diffusion of the aqueous monomer in the IP process and hence change the microstructure of the active layer in particular, resulting in some interface defects. 52,53 These variations would further contribute to a declined salt rejection. Table 2 lists the previous reports of HFC RO membranes in the past five years.…”

Section: Resultsmentioning

confidence: 99%

Enhanced water permeability of hollow fiber composite reverse osmosis membrane using porous α-cellulose/polysulfone hollow fiber membrane as the substrate

Li,

Fan,

et al. 2023

Textile Research Journal

View full text Add to dashboard Cite

The hollow fiber composite (HFC) reverse osmosis (RO) membrane with a special self-supporting structure has attracted a great deal of attention in the fields of separation and purification. However, low permeability is an urgent problem restricting its wide application. A porous polysulfone (PSF) hollow fiber support membrane was fabricated through the dry–wet spinning technique and hydrophilic α-cellulose © powder was incorporated in the PSF membrane matrix to improve the membrane’s water permeability. The HFC RO membrane was prepared via the interfacial polymerization process on the inner surface of the C/PSF support membrane. The membrane morphology and surface hydrophilicity were evaluated through scanning electron microscopy observation and dynamic water contact angle (WCA) measurement. The effects of α-cellulose incorporation on the separation performance of PSF hollow fiber membranes and HFC RO membranes were investigated. The results showed that the surface hydrophilicity and water permeability of the PSF membrane were significantly improved after the introduction of α-cellulose. The WCA of the modified PSF support membrane decreased from 84.6° for the neat PSF membrane to 70.25°, and the pure water flux can reach a maximum value of 102.1 L/(m2 · h) (0.1 Mpa), which was 1.3 times that of the pristine membrane. The HFC RO membrane using the hydrophilic modified PSF membrane as the substrate exhibited an enhanced water flux of 15.6 L/(m2 · h) and, meanwhile, the membrane salt rejection remained above 97.6% (1.0 wt% NaCl aqueous solution, 0.7 Mpa). The HFC RO membrane showed extremely high rejection rates (99%) for different dyes (congo red and methylene blue). No obvious performance deterioration was observed for the HFC RO membrane during continuous vacuum membrane distillation (VMD) experiments for 60 h.

show abstract

Section: Resultsmentioning

confidence: 99%

Enhanced water permeability of hollow fiber composite reverse osmosis membrane using porous α-cellulose/polysulfone hollow fiber membrane as the substrate

Li,

Fan,

et al. 2023

Textile Research Journal

View full text Add to dashboard Cite

show abstract

“…This robust experimental methodology facilitated the systematic investigation of contaminant removal using our synthesized materials, offering valuable insights into their performance and efficiency in the context of cleaner production and environmental sustainability. Table 1 shows the kinetic adsorption models employed [12,[29][30][31]:…”

Section: Kinetic Adsorption Modelsmentioning

confidence: 99%

“…The pronounced contamination of aquatic ecosystems caused by heavy metal presence represents a crucial and pressing concern, underscoring the necessity to address this global challenge [8,9]. In this regard, various methodologies for water remediation have been reported, including ion exchange, electrochemical treatment, chemical precipitation, water dilution, adsorption, and sediment neutralization through biological and catalytic methods [10][11][12][13]. Among these, the adsorption technique has gained significant recognition for its eco-friendly, convenient, and highly efficient attributes.…”

Section: Introductionmentioning

confidence: 99%

Sustainable Zeolite–Silver Nanocomposites via Green Methods for Water Contaminant Mitigation and Modeling Approaches

Ruíz-Baltazar,

Reyes-López,

Méndez-Lozano

et al. 2024

Nanomaterials

View full text Add to dashboard Cite

This study explores cutting-edge and sustainable green methodologies and technologies for the synthesis of functional nanomaterials, with a specific focus on the removal of water contaminants and the application of kinetic adsorption models. Our research adopts a conscientious approach to environmental stewardship by synergistically employing eco-friendly silver nanoparticles, synthesized using Justicia spicigera extract as a biogenic reducing agent, in conjunction with Mexican zeolite to enhance contaminant remediation, particularly targeting Cu2+ ions. Structural analysis, utilizing X-ray diffraction (XRD) and high-resolution scanning and transmission electron microscopy (TEM and SEM), yields crucial insights into nanocomposite structure and morphology. Rigorous linear and non-linear kinetic models, encompassing pseudo-first order, pseudo-second order, Freundlich, and Langmuir, are employed to elucidate the kinetics and equilibrium behaviors of adsorption. The results underscore the remarkable efficiency of the Zeolite–Ag composite in Cu2+ ion removal, surpassing traditional materials and achieving an impressive adsorption rate of 98% for Cu. Furthermore, the Zeolite–Ag composite exhibits maximum adsorption times of 480 min. In the computational analysis, an initial mechanism for Cu2+ adsorption on zeolites is identified. The process involves rapid adsorption onto the surface of the Zeolite–Ag NP composite, followed by a gradual diffusion of ions into the cavities within the zeolite structure. Upon reaching equilibrium, a substantial reduction in copper ion concentration in the solution signifies successful removal. This research represents a noteworthy stride in sustainable contaminant removal, aligning with eco-friendly practices and supporting the potential integration of this technology into environmental applications. Consequently, it presents a promising solution for eco-conscious contaminant remediation, emphasizing the utilization of green methodologies and sustainable technologies in the development of functional nanomaterials.

show abstract

“…The hydrothermal technique is a well-established technique for synthesizing zeolites. This method has successfully produced NaP [70], NaP1 [59], and NaA [71] zeolites with promising results. In pace with progressive research, many improvements have been employed to optimize the synthesis of CFAZ.…”

Section: Zeolitementioning

confidence: 99%

Synthesis and Environmental Applications of Nanoporous Materials Derived from Coal Fly Ash

Yuan,

Xu,

Liu

et al. 2023

Sustainability

View full text Add to dashboard Cite

Coal fly ash (CFA) is the primary solid waste generated by the coal-fired industry, and the predominant treatment methods include accumulation, landfill, and the production of cement-based building materials. However, the availability of these methods is relatively limited, and there is a need for technological upgrades. The extensive accumulation not only leads to environmental pollution but also has detrimental effects on human health. With its loose structure and main chemical components of Al2O3 and SiO2, CFA is conducive to the synthesis of promising nanoporous materials for applications in adsorption. The use of CFA as a raw material can significantly reduce preparation costs, improve comprehensive utilization efficiency, and manufacture more valuable products, aligning with the current strategy of sustainable development. Currently, the most widely used synthesis method is hydrothermal synthesis. This review focuses on the principles, methods, and influencing factors of synthesis, with particular emphasis on CFA-based mesoporous silica, zeolites, and metal–organic frameworks (MOFs), which have not been systematically reviewed previously. The quality of these synthesized nanoporous materials can be finely adjusted through the synthesis process. A comparison of the advantages and disadvantages of each process will be made, and the impact of the synthesis conditions on the synthetic products will be analyzed. Additionally, a brief discussion on the latest research advances in their applications in adsorption will be provided. Finally, relevant challenges and issues have been proposed.

show abstract

Hybrid Na-A zeolite/oxycut residue thin film composite nanofiltration membrane for Cr (III) removal

Cited by 8 publications

References 72 publications

Enhanced water permeability of hollow fiber composite reverse osmosis membrane using porous α-cellulose/polysulfone hollow fiber membrane as the substrate

Enhanced water permeability of hollow fiber composite reverse osmosis membrane using porous α-cellulose/polysulfone hollow fiber membrane as the substrate

Sustainable Zeolite–Silver Nanocomposites via Green Methods for Water Contaminant Mitigation and Modeling Approaches

Synthesis and Environmental Applications of Nanoporous Materials Derived from Coal Fly Ash

Contact Info

Product

Resources

About