Tailoring the morphology of polyethersulfone/sulfonated polysulfone ultrafiltration membranes for highly efficient separation of oil-in-water emulsions using TiO2 nanoparticles

Matindi, Christine; Hu, Mengyang; Kadanyo, Sania; Ly, Quang Viet; Gumbi, Nozipho N.; Dlamini, Derrick S.; Li, Jiaye; Hu, Yunxia; Cui, Zhenyu; Li, Jianxin

doi:10.1016/j.memsci.2020.118868

Cited by 65 publications

(18 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The results of the study revealed that the addition of the camphor-Al 2 O 3 NPs into the TFC membrane improved membrane water flux, salt rejection, and hydrophilicity [96]. In a further study, Matindi, et al [97] fabricated polyethersulfone (PES)/sulfonated polysulfone (SPSf)/TiO 2 mixed matrix membranes (MMMs) for the oil/water emulsion separation process. The authors analyzed the membrane performance by various loadings of TiO 2 nanoparticles (NPs) and polymer concentrations.…”

Section: Applications Of Nanoparticle Membranes In Water Treatmentmentioning

confidence: 99%

“…The authors analyzed the membrane performance by various loadings of TiO 2 nanoparticles (NPs) and polymer concentrations. The results of the authors' study exhibited that adding small concentrations of TiO 2 NPs into the membrane led to an outstanding improvement in the separation performance of membranes applied in oil/water emulsion filtration [97]. Barati,et al [98] used in situ grown iron oxide nanoparticles (NPs) study to impregnate commercial ceramic membranes via a facile technique to treat produced water.…”

Section: Applications Of Nanoparticle Membranes In Water Treatmentmentioning

confidence: 99%

See 1 more Smart Citation

Recent Progress on Nanomaterial-Based Membranes for Water Treatment

et al. 2021

View full text Add to dashboard Cite

Nanomaterials have emerged as the new future generation materials for high-performance water treatment membranes with potential for solving the worldwide water pollution issue. The incorporation of nanomaterials in membranes increases water permeability, mechanical strength, separation efficiency, and reduces fouling of the membrane. Thus, the nanomaterials pave a new pathway for ultra-fast and extremely selective water purification membranes. Membrane enhancements after the inclusion of many nanomaterials, including nanoparticles (NPs), two-dimensional (2-D) layer materials, nanofibers, nanosheets, and other nanocomposite structural materials, are discussed in this review. Furthermore, the applications of these membranes with nanomaterials in water treatment applications, that are vast in number, are highlighted. The goal is to demonstrate the significance of nanomaterials in the membrane industry for water treatment applications. It was found that nanomaterials and nanotechnology offer great potential for the advancement of sustainable water and wastewater treatment.

show abstract

Section: Applications Of Nanoparticle Membranes In Water Treatmentmentioning

confidence: 99%

Section: Applications Of Nanoparticle Membranes In Water Treatmentmentioning

confidence: 99%

Recent Progress on Nanomaterial-Based Membranes for Water Treatment

et al. 2021

View full text Add to dashboard Cite

show abstract

“…The results concluded that the MoS 2 nanosheet is a competent filler to be considered for CO 2 separations in MMMs [ 21 ]. Recently, a fair number of studies have been conducted on polysulfone (PSF) using molecular simulation considering its vast application to understand its morphology and behavior under different atomic forces, including interfacial properties and cavity size distribution [ 11 , 16 , 22 , 23 , 24 , 25 ]. A soft confining methodology was employed by Lock et al, 2019, to study the physical properties (i.e., glass transition temperature, density, cavity sizes) of ultrathin PSF polymeric membrane, which resulted in a better understanding of an atomistic-level using molecular simulation [ 26 ].…”

Section: Introductionmentioning

confidence: 99%

A Molecular Simulation Study of Silica/Polysulfone Mixed Matrix Membrane for Mixed Gas Separation

et al. 2021

View full text Add to dashboard Cite

Polysulfone-based mixed matrix membranes (MMMs) incorporated with silica nanoparticles are a new generation material under ongoing research and development for gas separation. However, the attributes of a better-performing MMM cannot be precisely studied under experimental conditions. Thus, it requires an atomistic scale study to elucidate the separation performance of silica/polysulfone MMMs. As most of the research work and empirical models for gas transport properties have been limited to pure gas, a computational framework for molecular simulation is required to study the mixed gas transport properties in silica/polysulfone MMMs to reflect real membrane separation. In this work, Monte Carlo (MC) and molecular dynamics (MD) simulations were employed to study the solubility and diffusivity of CO2/CH4 with varying gas concentrations (i.e., 30% CO2/CH4, 50% CO2/CH4, and 70% CO2/CH4) and silica content (i.e., 15–30 wt.%). The accuracy of the simulated structures was validated with published literature, followed by the study of the gas transport properties at 308.15 K and 1 atm. Simulation results concluded an increase in the free volume with an increasing weight percentage of silica. It was also found that pure gas consistently exhibited higher gas transport properties when compared to mixed gas conditions. The results also showed a competitive gas transport performance for mixed gases, which is more apparent when CO2 increases. In this context, an increment in the permeation was observed for mixed gas with increasing gas concentrations (i.e., 70% CO2/CH4 > 50% CO2/CH4 > 30% CO2/CH4). The diffusivity, solubility, and permeability of the mixed gases were consistently increasing until 25 wt.%, followed by a decrease for 30 wt.% of silica. An empirical model based on a parallel resistance approach was developed by incorporating mathematical formulations for solubility and permeability. The model results were compared with simulation results to quantify the effect of mixed gas transport, which showed an 18% and 15% percentage error for the permeability and solubility, respectively, in comparison to the simulation data. This study provides a basis for future understanding of MMMs using molecular simulations and modeling techniques for mixed gas conditions that demonstrate real membrane separation.

show abstract

“…There is enormous potential in exploring other nonperfluorinated membranes for energy storage systems. The aromatic types of the membrane show enormous potential in terms of mechanical stability, such as polybenzimidazole, , polysulfone, , polyphosphazene, , polyimides, , poly(arylene ether ketone), , and poly (ether ether ketone). , A wide range of other kinds of membranes has been developed and reported in various literature studies. , Compared to the COF, membranes mentioned above possess poor pore interconnectivity, disorder nanopores, and tortuous porosity that limit the membrane’s ion transport properties. , An extensive focus has been made to tune the nanochannel size and its well-ordered uniformity across the membrane, − but unable to achieve an ideal interconnected network due to the semicrystalline or amorphous nature of the polymer material. Several metal-free, lightweight materials have been incorporated, mainly composed of B, C, Si, N, and O elements through a stable covalent bond, to achieve uniform pore or uniformly distributed nanochannel inside the membrane. − Utilizing these organic materials as nanofillers causes enormous challenges like agglomeration, compatibility, and interfacial defects.…”

Section: Introductionmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

High-Temperature Proton Conduction in Covalent Organic Frameworks Interconnected with Nanochannels for Reverse Electrodialysis

Singh

Kim

2021

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

The crystalline porous organic framework offers a highly ordered and stable structure under hydrated conditions at high temperatures. Here, we demonstrated a method for preparing high-performance membrane buildup using “heterogeneous networks” and “polymer phase-separated nanochannels”. A well-interconnected “nanochannel” with a “crystalline organic framework” forms a highly stable hybrid membrane above 80 °C under 100% hydration under acidic and basic conditions. The prepared structure provides a self-standing membrane that easily overcomes the problem faced by conventional high ion-exchange capacity (IEC)-based membranes such as swelling, gelling, fragility, and dissolving at elevated temperatures. Apart from structural stability, it also shows better chemical stability with enhanced proton conduction at elevated temperatures. This proton conduction with better structural stability in the high IEC sample confirms from thermal analysis, whereas it also offers relatively low in-plane membrane swelling as compared to the conventional membranes. These hybrid membranes were further combined with the FAA-3 membrane to manufacture a reverse electrodialysis system for generating a power output. We also evaluated the maximum power density (P max) of the stack theoretically and experimentally. The determined net power density (P net) is reported to be 0.45 W m–2 at a flow rate of 40 mL min–1. These results confirm that the developed membrane can withstand robustly under realistic ambient conditions maintaining stable cell performance.

show abstract

Tailoring the morphology of polyethersulfone/sulfonated polysulfone ultrafiltration membranes for highly efficient separation of oil-in-water emulsions using TiO2 nanoparticles

Cited by 65 publications

References 53 publications

Recent Progress on Nanomaterial-Based Membranes for Water Treatment

Recent Progress on Nanomaterial-Based Membranes for Water Treatment

A Molecular Simulation Study of Silica/Polysulfone Mixed Matrix Membrane for Mixed Gas Separation

High-Temperature Proton Conduction in Covalent Organic Frameworks Interconnected with Nanochannels for Reverse Electrodialysis

Contact Info

Product

Resources

About