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1. Thermo-responsive adsorption-desorption of perfluoroorganics from water using PNIPAm hydrogels and pore functionalized membranes

Author:
Saad, Anthony; Mills, Rollie; Wan, Hongyi; Mottaleb, M. Abdul; Ormsbee, Lindell; Bhattacharyya, Dibakar
Source:
Journal of membrane science 2020 v.599 pp. 117821
ISSN:
0376-7388
Subject:
adsorbents; adsorption; artificial membranes; desorption; hydrogels; hydrophilicity; hydrophobicity; moieties; perfluorocarbons; perfluorooctanoic acid; temperature; thermoplastics
Abstract:
... Perfluorochemicals (PFCs) are emerging contaminants in various water sources. Responsive polymers provide a new avenue for PFC adsorption/desorption from water. Poly-N-isopropylacrylamide's (PNIPAm's) temperature-responsive behavior and hydrophilic/hydrophobic transition is leveraged for reversible adsorption and desorption of PFCs. Adsorption of PFOA (perfluoro-octanoic acid) onto PNIPAm hydrogel ...
DOI:
10.1016/j.memsci.2020.117821
PubMed:
32095035
PubMed Central:
PMC7039651

2. Pd/Fe nanoparticle integrated PMAA-PVDF membranes for chloro-organic remediation from synthetic and site groundwater

Author:
Wan, Hongyi; Islam, Md Saiful; Briot, Nicolas J.; Schnobrich, Matthew; Pacholik, Lucy; Ormsbee, Lindell; Bhattacharyya, Dibakar
Source:
Journal of membrane science 2020 v.594 pp. 117454
ISSN:
0376-7388
Subject:
artificial membranes; carbon tetrachloride; catalytic activity; chloroform; corrosion; dechlorination; groundwater; hydrogen; hydrogen production; iron; microfiltration; nanoparticles; palladium; remediation; surface area; tetrachloroethylene; thermoplastics; trichloroethylene
Abstract:
... The poly(methacrylic acid) (PMAA) was synthesized in the pores of commercial microfiltration PVDF membranes to allow incorporation of catalytic palladium/iron (Pd/Fe) nanoparticles for groundwater remediation. Particles of 17.1 ± 4.9 nm size were observed throughout the pores of membranes using a focused ion beam. To understand the role of Pd fractions and particle compositions, 2-chlorobiphenyl w ...
DOI:
10.1016/j.memsci.2019.117454
PubMed:
31929677
PubMed Central:
PMC6953629

3. Selective laser assisted impairment of reverse osmosis membranes

Author:
Donose, Bogdan C.; Premavally, Ashwin Vijayan; Pype, Marie-Laure; Doederer, Katrin
Source:
MethodsX 2020 v.7 pp. 100830
ISSN:
2215-0161
Subject:
artificial membranes; filtration; mechanical damage; models; monitoring; pathogens; polyamides; polyesters; reverse osmosis
Abstract:
... Monitoring the loss of integrity in reverse osmosis (RO) membranes is crucial for protection of public health as small imperfections can result in catastrophic pathogen outbreaks. However, understanding the phenomena accompanying the loss of integrity in RO membranes relies on properly characterizing and interpreting performance data. Reproducing chemical and mechanical damage in model membranes t ...
DOI:
10.1016/j.mex.2020.100830
PubMed:
32154127
PubMed Central:
PMC7058821

4. Transmission of Anaplasma phagocytophilum (Foggie, 1949) by Ixodes ricinus (Linnaeus, 1758) ticks feeding on dogs and artificial membranes

Author:
Fourie, Josephus J.; Evans, Alec; Labuschagne, Michel; Crafford, Dionne; Madder, Maxime; Pollmeier, Matthias; Schunack, Bettina
Source:
Parasites & vectors 2019 v.12 no.1 pp. 136
ISSN:
1756-3305
Subject:
Anaplasma phagocytophilum; DNA; Ixodes ricinus; adults; antibodies; artificial membranes; bacterial diseases of plants; blood; disease prevention; disease transmission; dog diseases; dogs; females; in vitro studies; nymphs; plant pathogenic bacteria; quantitative polymerase chain reaction; serodiagnosis; ticks
Abstract:
... BACKGROUND: The interplay of speed of activity of acaricidal products and tick-borne pathogen transmission time is the major driver for disease prevention. This study aimed to investigate the time required for transmission of Anaplasma phagocytophilum by adult Ixodes ricinus ticks in vivo on dogs, and to confirm the time required for transmission observed in vivo, in vitro. METHODS: Nymphs of I. r ...
DOI:
10.1186/s13071-019-3396-9
PubMed:
30909972
PubMed Central:
PMC6434881

5. Hybrid membrane distillation reverse electrodialysis configuration for water and energy recovery from human urine: An opportunity for off-grid decentralised sanitation

Author:
Mercer, E.; Davey, C.J.; Azzini, D.; Eusebi, A.L.; Tierney, R.; Williams, L.; Jiang, Y.; Parker, A.; Kolios, A.; Tyrrel, S.; Cartmell, E.; Pidou, M.; McAdam, E.J.
Source:
Journal of membrane science 2019 v.584 pp. 343-352
ISSN:
0376-7388
Subject:
Gibbs free energy; artificial membranes; batteries; distillation; electric power; electrodialysis; energy; energy recovery; heat; humans; models; sanitation; sodium chloride; temperature; urine
Abstract:
... The integration of membrane distillation with reverse electrodialysis has been investigated as a sustainable sanitation solution to provide clean water and electrical power from urine and waste heat. Reverse electrodialysis was integrated to provide the partial remixing of the concentrate (urine) and diluate (permeate) produced from the membrane distillation of urine. Broadly comparable power dens ...
DOI:
10.1016/j.memsci.2019.05.010
PubMed:
31423048
PubMed Central:
PMC6558964

6. Characterizing salt permeability in polyamide desalination membranes using electrochemical impedance spectroscopy

Author:
Shaffer, Devin L.; Feldman, Kathleen E.; Chan, Edwin P.; Stafford, Gery R.; Stafford, Christopher M.
Source:
Journal of membrane science 2019 v.583 pp. 248-257
ISSN:
0376-7388
Subject:
artificial membranes; brackish water; desalination; dielectric spectroscopy; electrolytes; partition coefficients; permeability; polyamides; thermodynamics
Abstract:
... Improving the performance of desalination membranes requires better measurements of salt permeability in the polyamide separating layer to elucidate the thermodynamic and kinetic components of membrane permselectivity. In this work, electrochemical impedance spectroscopy (EIS) is introduced as a technique to measure the salt permeability and estimate the salt partition coefficient in thin polyamid ...
DOI:
10.1016/j.memsci.2019.04.062
PubMed:
31579350
PubMed Central:
PMC6774373

7. Large-Scale Computational Screening of Metal Organic Framework (MOF) Membranes and MOF-Based Polymer Membranes for H₂/N₂ Separations

Author:
Azar, Ayda Nemati Vesali; Velioglu, Sadiye; Keskin, Seda
Source:
ACS sustainable chemistry & engineering 2019 v.7 no.10 pp. 9525-9536
ISSN:
2168-0485
Subject:
artificial membranes; coordination polymers; hydrogen; molecular dynamics; nitrogen; permeability; screening
Abstract:
... Several thousands of metal organic frameworks (MOFs) have been reported to date, but the information on H₂/N₂ separation performances of MOF membranes is currently very limited in the literature. We report the first large-scale computational screening study that combines state-of-the-art molecular simulations, grand canonical Monte Carlo (GCMC) and molecular dynamics (MD), to predict H₂ permeabili ...
DOI:
10.1021/acssuschemeng.9b01020
PubMed:
31157127
PubMed Central:
PMC6537470

8. Thermally stable cross-linked P84 with superior membrane H2/CO2 separation properties at 100 °C

Author:
Omidvar, Maryam; Stafford, Christopher M.; Lin, Haiqing
Source:
Journal of membrane science 2019 v.575 pp. 118-125
ISSN:
0376-7388
Subject:
Fourier transform infrared spectroscopy; X-ray photoelectron spectroscopy; artificial membranes; carbon dioxide; crosslinking; diamines; differential scanning calorimetry; hydrogen; models; permeability; polymers; temperature; thermal stability; thermogravimetry
Abstract:
... Polymers with a strong size-sieving ability and superior H2/CO2 selectivity at 100 °C or above are of great interests for pre-combustion CO2 capture. Polyimides (such as Matrimid and 6FDA-durene) have been cross-linked using diamines and show superior H2/CO2 selectivity. However, these cross-linked polymers cannot be used for the pre-combustion CO2 capture because of the lack of thermal stability ...
DOI:
10.1016/j.memsci.2019.01.003
PubMed:
31274955
PubMed Central:
PMC6604637

9. Evaluation of antimicrobial and antioxidant activities for cellulose acetate films incorporated with Rosemary and Aloe Vera essential oils

Author:
El Fawal, Gomaa F.; Omer, Ahmed M.; Tamer, Tamer M.
Source:
Journal of food science and technology 2019 v.56 no.3 pp. 1510-1518
ISSN:
0022-1155
Subject:
2,2-diphenyl-1-picrylhydrazyl; Aloe vera; Bacillus subtilis; Escherichia coli; Fourier transform infrared spectroscopy; active food packaging; antimicrobial properties; antioxidant activity; artificial membranes; cellulose acetate; chemical structure; essential oils; free radical scavengers; lipid content; mechanical properties; rosemary; scanning electron microscopy; water uptake; wettability
Abstract:
... Enhancement of natural based polymeric membranes for active packaging takes the attention of scientists. Their biological activities can be obtained by adding essential oils, which are natural extracts with antimicrobial and antioxidant properties. The target of current work aimed to produce bio-active membranes from cellulose acetate incorporated with Rosemary and Aloe Vera oil. The developed fil ...
DOI:
10.1007/s13197-019-03642-8
PubMed:
30956331
PubMed Central:
PMC6423368

10. DNA retention on depth filters

Author:
Khanal, Ohnmar; Xu, Xuankuo; Singh, Nripen; Traylor, Steven J.; Huang, Chao; Ghose, Sanchayita; Li, Zheng Jian; Lenhoff, Abraham M.
Source:
Journal of membrane science 2019 v.570-571 pp. 464-471
ISSN:
0376-7388
Subject:
Chinese hamsters; DNA; animal ovaries; artificial membranes; bioprocessing; filters; filtration; fluorescence microscopy; ionic strength; protein aggregates
Abstract:
... Depth filtration is a commonly-used bioprocessing unit operation for harvest clarification that reduces the levels of process- and product-related impurities such as cell debris, host-cell proteins, nucleic acids and protein aggregates. Since depth filters comprise multiple components, different functionalities may contribute to such retention, making the mechanisms by which different impurities a ...
DOI:
10.1016/j.memsci.2018.10.058
PubMed:
31223185
PubMed Central:
PMC6586439

11. Molecular Simulations of MOF Membranes and Performance Predictions of MOF/Polymer Mixed Matrix Membranes for CO₂/CH₄ Separations

Author:
Altintas, Cigdem; Keskin, Seda
Source:
ACS sustainable chemistry & engineering 2018 v.7 no.2 pp. 2739-2750
ISSN:
2168-0485
Subject:
artificial membranes; carbon dioxide; databases; manufacturing; methane; molecular dynamics; permeability; polymers; prediction; screening; simulation models
Abstract:
... Efficient separation of CO₂ from CO₂/CH₄ mixtures using membranes has economic, environmental and industrial importance. Membrane technologies are currently dominated by polymers due to their processing abilities and low manufacturing costs. However, polymeric membranes suffer from either low gas permeabilities or low selectivities. Metal organic frameworks (MOFs) are suggested as potential membra ...
DOI:
10.1021/acssuschemeng.8b05832
PubMed:
30701144
PubMed Central:
PMC6344032

12. Next generation in vitro liver model design: Combining a permeable polystyrene membrane with a transdifferentiated cell line

Author:
Luetchford, Kim A.; Wung, Nelly; Argyle, Iain S.; Storm, Michael P.; Weston, Stephen D.; Tosh, David; Ellis, Marianne J.
Source:
Journal of membrane science 2018 v.565 pp. 425-438
ISSN:
0376-7388
Subject:
amylases; artificial membranes; biocompatibility; carbamoyl-phosphate synthase (ammonia); cell culture; cell lines; glutamine; hepatocytes; hydrophobicity; liver; manufacturing; models; modulus of elasticity; oxygen; permeability; phenotype; polystyrenes; porosity; sodium chloride; strength (mechanics); tissue engineering; transferrin
Abstract:
... Herein we describe the manufacture and characterisation of biocompatible, porous polystyrene membranes, suitable for cell culture. Though widely used in traditional cell culture, polystyrene has not been used as a hollow fibre membrane due to its hydrophobicity and non-porous structure.Here, we use microcrystalline sodium chloride (4.7 ± 1.3 µm) to control the porosity of polystyrene membranes and ...
DOI:
10.1016/j.memsci.2018.07.063
PubMed:
30393423
PubMed Central:
PMC6148409

13. One-Pot Synthesis of High-Flux b-Oriented MFI Zeolite Membranes for Xe Recovery

Author:
Wang, Xuerui; Karakiliç, Pelin; Liu, Xinlei; Shan, Meixia; Nijmeijer, Arian; Winnubst, Louis; Gascon, Jorge; Kapteijn, Freek
Source:
ACS applied materials & interfaces 2018 v.10 no.39 pp. 33574-33580
ISSN:
1944-8252
Subject:
anesthetics; artificial membranes; carbon; carbon dioxide; crystallization; crystals; permeability; sieving; silica; synthesis; wastes; zeolites
Abstract:
... We demonstrate that b-oriented MFI (Mobil Five) zeolite membranes can be manufactured by in situ crystallization using an intermediate amorphous SiO₂ layer. The improved in-plane growth by using a zeolite growth modifier leads to fusion of independent crystals and eliminates boundary gaps, giving good selectivity in the separation of CO₂/Xe mixtures. The fast diffusion of CO₂ dominates the overall ...
DOI:
10.1021/acsami.8b12613
PubMed:
30200764
PubMed Central:
PMC6328236

14. Chemicals from textiles to skin: an in vitro permeation study of benzothiazole

Author:
Iadaresta, Francesco; Manniello, Michele Dario; Östman, Conny; Crescenzi, Carlo; Holmbäck, Jan; Russo, Paola
Source:
Environmental science and pollution research international 2018 v.25 no.25 pp. 24629-24638
ISSN:
0944-1344
Subject:
artificial membranes; chemical pollutants; clothing; environmental protection; fabrics; human health; retail marketing; risk; risk assessment; toxic substances
Abstract:
... Despite the possible impact on human health, few studies have been conducted to assess the penetration and accumulation of contaminants in the skin after a prolonged contact with textile materials. In previous studies, we have shown that benzothiazole and its derivatives, as well as other potentially hazardous chemicals, often are present as textile contaminants in clothes available on the retail ...
DOI:
10.1007/s11356-018-2448-6
PubMed:
29911295
PubMed Central:
PMC6133113

15. Antigen-free control wells in an ELISA set-up for the determination of autoantibodies against G protein-coupled receptors—a requisite for correct data evaluation

Author:
Haberland, Annekathrin; Müller, Johannes; Wallukat, Gerd; Wenzel, Katrin
Source:
Analytical and bioanalytical chemistry 2018 v.410 no.21 pp. 5101-5105
ISSN:
1618-2642
Subject:
artificial membranes; autoantibodies; beta-2 adrenergic receptors; bioassays; diagnostic techniques; enzyme-linked immunosorbent assay; epitopes; neutralization; patients
Abstract:
... First functional acting autoantibodies against G protein-coupled receptors such as the beta2-adrenoceptor in e.g. asthmatic patients have already been discovered in the early 1980s of the last century using assays that show their functional activity. Today, almost 40 years later, the measurement of such autoantibodies is still a challenge. Bioassays able to show the functional activity of such aut ...
DOI:
10.1007/s00216-018-1172-x
PubMed:
29947901
PubMed Central:
PMC6061717

16. Direct numerical simulation of continuous lithium extraction from high Mg2+/Li+ ratio brines using microfluidic channels with ion concentration polarization

Author:
Gong, Lingyan; Ouyang, Wei; Li, Zirui; Han, Jongyoon
Source:
Journal of membrane science 2018 v.556 pp. 34-41
ISSN:
0376-7388
Subject:
artificial membranes; cations; electric power; electroosmosis; lithium; magnesium; mathematical models; potassium; sodium
Abstract:
... A novel ion concentration polarization-based microfluidic device is proposed for continuous extraction of Li+ from high Mg2+/Li+ ratio brines. With simultaneous application of the cross-channel voltage that drives electroosmotic flow and the cross-membrane voltage that induces ion depletion, Li+ is concentrated much more significantly than other cations in front of the membrane in the microchannel ...
DOI:
10.1016/j.memsci.2018.03.078
PubMed:
30319169
PubMed Central:
PMC6181454

17. Molecular-Scale Hybrid Membranes Derived from Metal-Organic Polyhedra for Gas Separation

Author:
Liu, Xinlei; Wang, Xuerui; Bavykina, Anastasiya V.; Chu, Liangyong; Shan, Meixia; Sabetghadam, Anahid; Miro, Hozanna; Kapteijn, Freek; Gascon, Jorge
Source:
ACS applied materials & interfaces 2018 v.10 no.25 pp. 21381-21389
ISSN:
1944-8252
Subject:
artificial membranes; carbon dioxide; permeability; polymers
Abstract:
... The preparation and the performance of mixed matrix membranes based on metal-organic polyhedra (MOPs) are reported. MOP fillers can be dispersed as discrete molecular units (average 9 nm in diameter) when low filler cargos are used. In spite of the low doping amount (1.6 wt %), a large performance enhancement in permeability, aging resistance, and selectivity can be achieved. We rationalize this e ...
DOI:
10.1021/acsami.8b07045
PubMed:
29869872
PubMed Central:
PMC6150657

18. Role of membrane pore polymerization conditions for pH responsive behavior, catalytic metal nanoparticle synthesis, and PCB degradation

Author:
Islam, Md. Saiful; Hernández, Sebastián; Wan, Hongyi; Ormsbee, Lindell; Bhattacharyya, Dibakar
Source:
Journal of membrane science 2018 v.555 pp. 348-361
ISSN:
0376-7388
Subject:
X-ray diffraction; X-ray photoelectron spectroscopy; acrylic acid; artificial membranes; catalysts; contact angle; moieties; nanoparticles; pH; permeability; polychlorinated biphenyls; polymerization; scanning electron microscopy; statistical analysis; surface area; thermogravimetry; thermoplastics; transmission electron microscopy; zeta potential
Abstract:
... This article describes the effects of changing monomer and cross-linker concentrations on the mass gain, water permeability, Pd-Fe nanoparticle (NP) loading, and the rate of degradation of 3,3',4,4',5-pentachlorobiphenyl (PCB 126) of pore functionalized polyvinylidene fluoride (PVDF) membranes. In this study, monomer (acrylic acid (AA)) and cross-linker (N, N′- methylene-bis (acrylamide)) concentr ...
DOI:
10.1016/j.memsci.2018.03.060
PubMed:
30718939
PubMed Central:
PMC6358284

19. Molecular simulations of MOF membranes for separation of ethane/ethene and ethane/methane mixtures

Author:
Altintas, Cigdem; Keskin, Seda
Source:
RSC advances 2017 v.7 no.82 pp. 52283-52295
ISSN:
2046-2069
Subject:
adsorption; artificial membranes; carbon; coordination polymers; ethane; ethylene; methane; molecular dynamics; nanopores; permeability; sieves; zeolites
Abstract:
... Metal organic framework (MOF) membranes have been widely investigated for gas separation applications. Several MOFs have been recently examined for selective separation of C₂H₆. Considering the large number of available MOFs, it is not possible to fabricate and test the C₂H₆ separation performance of every single MOF membrane using purely experimental methods. In this study, we used molecular simu ...
DOI:
10.1039/c7ra11562h
PubMed:
29308193
PubMed Central:
PMC5735352

20. Silicon nanoporous membranes as a rigorous platform for validation of biomolecular transport models

Author:
Feinberg, Benjamin J.; Hsiao, Jeff C.; Park, Jaehyun; Zydney, Andrew L.; Fissell, William H.; Roy, Shuvo
Source:
Journal of membrane science 2017 v.536 pp. 44-51
ISSN:
0376-7388
Subject:
Gibbs free energy; artificial membranes; biochemical compounds; kidney diseases; models; molecular weight; nanopores; physiological transport; polymers; porosity; prediction; semiconductors; sieving; silicon; solutes
Abstract:
... Microelectromechanical systems (MEMS), a technology that resulted from significant innovation in semiconductor fabrication, have recently been applied to the development of silicon nanopore membranes (SNM). In contrast to membranes fabricated from polymeric materials, SNM exhibit slit-shaped pores, monodisperse pore size, constant surface porosity, zero pore overlap, and sub-micron thickness. This ...
DOI:
10.1016/j.memsci.2017.04.030
PubMed:
28936029
PubMed Central:
PMC5604868