Topic
Reverse osmosis
About: Reverse osmosis is a research topic. Over the lifetime, 20780 publications have been published within this topic receiving 299185 citations. The topic is also known as: RO.
Papers published on a yearly basis
Papers
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TL;DR: Results obtained here show that flocculation prior to microfiltration leads to significant arsenic removal in the permeate, and the addition of small amounts of cationic polymeric flocculants lead to significantly improved permeate fluxes duringmicrofiltration.
199 citations
TL;DR: In this paper, a rotating disk membrane was developed to investigate experimentally concentration polarization during the ultrafiltration of bovine serum albumin solutions, and the experimental data supported analytical and numerical predictions which were developed as part of this study.
Abstract: A rotating disk membrane was developed to investigate experimentally concentration polarization during the ultrafiltration of bovine serum albumin solutions. The experimental data supported analytical and numerical predictions which were developed as part of this study. Osmotic pressure and concentration dependent viscosity and diffusivity were demonstrated to be important tactors. The results were also extended to predict ultrafiltration in porous walled ducts. Finally, a formal description of protein ultrafiltration in terms of the Stephan-Maxwell flux equations was shown to provide a unifying description of all filtration processes from mechanical filtration to reverse osmosis.
199 citations
TL;DR: In this article, the effect of fouling by organics on rejection was observed for the removal of 36 neutral trace plastic additives, endocrine disruptors and other organic contaminants, and the dominant removal mechanism is dependent on solute type but largely involving sieving, diffusion and other membrane solute interaction by polymer.
199 citations
TL;DR: Ultrafiltration experiments with protein solutions and membranes with a range of water fluxes confirm that gel-polarised UF flux is dependent on membrane permeability and surface properties, and support for the effective free area concept in UF is provided by an analogy between a gel- polarisation UF membrane and a composite reverse osmosis membrane.
197 citations
TL;DR: This work reports results from molecular dynamics simulations that indicate that NPG maintains its ultrahigh permeability even at low pressures, allowing a permeate water flux of 6.1 × 10−15 l/h bar per pore.
Abstract: Nanoporous graphene (NPG) shows tremendous promise as an ultra-permeable membrane for water desalination thanks to its atomic thickness and precise sieving properties. However, a significant gap exists in the literature between the ideal conditions assumed for NPG desalination and the physical environment inherent to reverse osmosis (RO) systems. In particular, the water permeability of NPG has been calculated previously based on very high pressures (1000–2000 bars). Does NPG maintain its ultrahigh water permeability under real-world RO pressures (<100 bars)? Here, we answer this question by drawing results from molecular dynamics simulations. Our results indicate that NPG maintains its ultrahigh permeability even at low pressures, allowing a permeate water flux of 6.0 l/h-bar per pore, or equivalently 1041 ± 20 l/m2-h-bar assuming a nanopore density of 1.7 × 1013 cm−2.
197 citations