Exploring and Exploiting the Effect of Solvent Treatment in Membrane Separations

Razali, Mayamin; Didaskalou, Christos; Kim, Jeong F.; Babaei, Masoud; Drioli, Enrico; Lee, Young Moo; Székely, György

doi:10.1021/acsami.7b01879

Cited by 65 publications

(29 citation statements)

References 35 publications

(63 reference statements)

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“…By this approach, the solubility between polymers and solvents can be predicted [35]. The polymer-solvent interaction is affected by the enthalpic and entropic components of the materials [37]. Materials which have similarities in HSP will be easily mixed or dissolved [38].…”

Section: Membrane Pores and Morphologymentioning

confidence: 99%

High-Throughput Microfiltration Membranes with Natural Biofouling Reducer Agent for Food Processing

et al. 2018

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The effect of natural antibiotics Moringa oleifera seeds powder in cellulose acetate membranes as biofouling reducer agent was investigated. Mixed matrix membranes (MMM) were synthesized by adding 100 mesh M. oleifera seeds powder with variation of three concentrations (1 wt%, 2 wt%, and 3 wt%), into a mix polymer solution of CA (cellulose acetate) and two different solvents, i.e., DMF (dimethylformamide) and DMAc (dimethylacetamide). The synthesized membranes morphology was observed under scanning electron microscopy and from the images can be seen that the membranes made of DMAc formed rather large macrovoid as compared to DMF-based membranes. The microstructure affected the water flux through the membranes, in which the DMAc membranes provided a higher flux value and served as high-throughput microfiltration membranes. Antibacterial properties of MMM were tested using Escherichia coli adhesion onto membrane surfaces. The results showed that M. oleifera has been proven to eradicate E. coli activity on the membrane surfaces due to interaction between bacterial cells and phenolic compounds from M. oleifera, through absorption processes involving hydrogen bonds. two or more different properties of components combined, to achieve a better separation performance. In order to promote antifouling properties, some combination of functionalized fillers and polymer matrixes have been used, such as a combination of nanoparticles of anatase TiO 2 /polysulfone [10] and Ag-loaded graphene oxide/polyethersulfone [11]. Those combination were effective, however the use of metal components as fillers, e.g., silver particles, might be unsafe for membrane that is used for food processing application. The use of plant-based subtances, might provide a more reliable and safe anti-biofoulant, such as the utilization of cardanol [12]. In this study, a natural antibacterial M. oleifera seeds powder is evaluated to be employed as filler to the cellulose acetate polymer matrix to form anti-biofouling MMM.M. oleifera could be utilized against Gram positive and negative bacteria [13]. Recombinant protein inside M. oleifera seeds is able to agglomerate Gram positive and negative bacterial cells [14]. By its properties, Moringa seeds could potentially be used as for environmentally friendly antibiofouling, because these natural ingredients are not harmful, even if used in large quantities when compared with chemicals or metals that are commonly used as agents to reduce biofouling.As for polymeric matrix, cellulose acetate has been chosen due to some beneficial properties. Cellulose acetate has good properties as a membrane polymer for food processing due to renewable, biodegradable, biocompatible, non-toxic, and inexpensive subtances [15,16]. Cellulose acetate has relatively thermal and chemical stability [17], because cellulose has a rich of hydroxyl groups and it is able to form a strong hydrogen bonds that could not be separated easily [18]. Cellulose acetate are also extraordinary hydrophilic, which can be used for minimizing fouling on t...

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Section: Membrane Pores and Morphologymentioning

confidence: 99%

High-Throughput Microfiltration Membranes with Natural Biofouling Reducer Agent for Food Processing

et al. 2018

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“…For instance, 93 % rejection results in 50 % catalyst loss in 10 diavolume processing time. However, recent process advancement of the OSN field suggests that employing a threestage cascade configuration can address the inherent limitation of diafiltration processes: low yield and high solvent consumption [43][44][45][46]. Moreover, solvent treatment of the PBI membranes could also enhance the process performance [47].…”

Section: Catalyst Recovery Via Nanofiltrationmentioning

confidence: 99%

Synthesis and Recovery of Pyridine- and Piperidine-based Camphorsulfonamide Organocatalysts Used for Michael Addition Reaction

Kisszékelyi

Nagy

Tóth

et al. 2018

Period. Polytech. Chem. Eng.

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Two new pyridine-based asymmetric bifunctional organocatalysts containing one or two camphorsulfonamide units were synthesized. Asymmetric Michael addition of pentane-2,4-dione to β-nitrostyrene was catalyzed by these organocatalysts. During our experiments, influence of the solvent and temperature on the yield and enantioselectivity was studied. Using monocamphorsulfonamide derivative the S enantiomer of the corresponding Michael adduct was gained with moderate yield (up to 51 %) and low enantiomeric excess (up to 18 %). Organic solvent nanofiltration was successfully applied for the recovery of these organocatalysts. Furthermore, pyridine camphorsulfonamide was reduced to its piperidine derivative. Using piperidine monosulfonamide derivative racemic Michael adduct was obtained with excellent yield (up to 89 %). Beside its organocatalytic relevance, piperidine monosulfonamide derivative may also possess biological activity.

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“…In the meantime, the conditions required to initiate grating by hydrogen abstraction are limited, hence, high-energy radical processes including electron irradiation are used to modified UHMWPE, and those methods are ineffective [8]. Furthermore, there are approaches for obtaining hydrophilic membrane surfaces, such as amine treatment [9], bio-inspiration, grafting [10], solvent adsorption [11], and polymer blending [12]. Therefore, an effective and energy-saving method to enhance the antifouling properties of the UHMWPE composite membrane has become an emergency issue of our next work.…”

Section: Introductionmentioning

confidence: 99%

The Construction of a Hydrophilic Inorganic Layer Enables Mechanochemically Robust Super Antifouling UHMWPE Composite Membrane Surfaces

Liu

et al. 2020

Polymers

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In this study, a facile and effective method is adopted to prepare mechanochemically robust super antifouling membrane surfaces. During the process, vinyl trimethoxy silane (VTMS) was used as the reactive intermediate for coupling the hydrophilic inorganic SiO2 nanoparticle layer on to the organic ultra-high-molecular-weight polyethylene (UHMWPE) membrane surface, which created hierarchical nanostructures and lower surface energy simultaneously. The physical and chemical properties of the modified UHMWPE composite membrane surface were investigated. FTIR and XPS showed the successful chemical grafting of VTMS and SiO2 immobilization, and this modification could effectively enhance the membrane’s surface hydrophilicity and filtration property with obviously decreased surface contact angle, the pure water flux and bovine serum albumin (BSA) rejection were 805 L·m−2·h−1 and 93%, respectively. The construction of the hydrophilic nano-SiO2 layer on the composite membrane surface for the improvement of membrane antifouling performance was universal, water flux recovery ratio values of BSA, humic acid (HA), and sodium alginate (SA) were all up to 90%. The aim of this paper is to provide an effective approach for the enhancement of membrane antifouling performance by the construction of a hydrophilic inorganic layer on an organic membrane surface.

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Exploring and Exploiting the Effect of Solvent Treatment in Membrane Separations

Cited by 65 publications

References 35 publications

High-Throughput Microfiltration Membranes with Natural Biofouling Reducer Agent for Food Processing

High-Throughput Microfiltration Membranes with Natural Biofouling Reducer Agent for Food Processing

Synthesis and Recovery of Pyridine- and Piperidine-based Camphorsulfonamide Organocatalysts Used for Michael Addition Reaction

The Construction of a Hydrophilic Inorganic Layer Enables Mechanochemically Robust Super Antifouling UHMWPE Composite Membrane Surfaces

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