Membrane fouling is a primary challenge encountered during the administration of hemodialysis (HD) and hemodiafiltration (HDF). A high-flux membrane is suitable for dialyzer reuse, since it is used repeatedly. Water flux is a benchmark used to assess the effectiveness of the dialysis membrane during treatment and it is usually evaluated to determine whether membrane fouling has occurred. Polysulfone (PS) membrane has good biocompatibility and solute permeability; however, polyethersulfone (PES) is often used as a hemodiafilter membrane because of better hydrophilicity compared to PS. We evaluated water flux across hemodiafilters using newly developed asymmetric triacetate (ATA) and PES as conventional membranes in vitro. Water flux of across ATA and PES membranes significantly decreased 30 min after the start of the experiments and thereafter showed stabilization. Water flux across the ATA membrane consistently showed significantly higher values of greater than 100 mL/m/h/mmHg, compared to lower values observed across the PES membrane. These results suggest that the ATA membrane has a potential use not only for HDF, but also for long-time therapies of HD and HDF.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1007/s10047-017-0971-8 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Methylmercury in subarctic amphibians: environmental gradients, bioaccumulation, and estimated flux.
Environ Toxicol Chem
January 2025
New Jersey Water Science Center, U.S. Geological Survey, Lawrenceville, NJ, United States.
Rapid warming in polar regions is causing large changes to ecosystems, including altering environmentally available mercury (Hg). Although subarctic freshwater systems have simple vertebrate communities, Hg in amphibians remains unexplored. We measured total Hg (THg) in wetland sediments and methylmercury (MeHg) in multiple life-stages (eggs to adults) of wood frogs (Rana sylvatica) and larval boreal chorus frogs (Pseudacris maculata) from up to 25 wetlands near Churchill, Manitoba (Canada), during the summers of 2018-2019.
View Article and Find Full Text PDFCloud radiative effect dominates variabilities of surface energy budget in the dark Arctic.
Sci Rep
January 2025
Lawrence Livermore National Laboratory, Livermore, CA, USA.
Climate models simulate a wide range of temperatures in the Arctic. Here we investigate one of the main drivers of changes in surface temperature: the net surface heat flux in the models. We show that in the winter months of the dark Arctic, there is a more than two-fold difference in the net surface heat fluxes among the models, and this difference is dominated by the downward infrared radiation from clouds.
View Article and Find Full Text PDFAugmented carbon utilization and ammonia assimilation in heterotrophic microorganism under magnetic field stimulation.
Environ Res
January 2025
School of Civil Engineering, Shandong University, Jinan, Shandong, PR China; Laboratory of water-sediment regulation and eco-decontamination, Jinan, Shandong, PR China. Electronic address:
Ammonia assimilation is crucial in microbial nitrogen metabolism, and researching the impact of magnetic field (MF) on heterotrophic ammonia assimilation (HAA) contributes to improving nitrogen utilization and environmental remediation. This study systematically investigated the profound effects of MF stimulation on carbon and ammonia assimilation mechanisms in heterotrophic microorganisms. The dynamic responses of microbial carbon source metabolic efficiency and nitrogen source assimilation rates were quantitatively analyzed by designing a multidimensional stimulation environment of different nutrient levels (C/N 20, 25, 30) and MF intensities (0, 1, 20 mT).
View Article and Find Full Text PDFFreshwater Salinization Mitigated NO Emissions in Submerged Plant-Covered Systems: Insights from Attached Biofilms.
Environ Sci Technol
January 2025
State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
Submerged plants (SMPs) play a critical role in improving water quality and reducing NO greenhouse gas emissions. However, freshwater salinization represents a major environmental challenge in aquatic systems. To investigate the impact of salinization on NO emissions, this study conducted indoor mesocosm experiments simulating SMP and nonsubmerged plant (Non_SMP) areas in freshwater lakes.
View Article and Find Full Text PDFBiomimetic 3D Prototyping of Hierarchically Porous Multilayered Membranes for Enhanced Oil-Water Filtration.
ACS Appl Mater Interfaces
January 2025
Associate Professor of Mechanical Engineering, College of Engineering, University of Georgia (UGA), 302 E. Campus Rd., Athens 30602, United States.
This study introduces a biomimetic approach to 3D printing multilayered hierarchical porous membranes (MHMs) using Direct Ink Writing (DIW) technology. Fabricated through a fast layer-by-layer printing process with varying concentrations of pore-forming agents, the produced MHMs mimic the hierarchical pore structure and filtration capabilities of natural soil systems. As a result, the 3D-printed MHMs achieved an impressive oil rejection rate of 99.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!