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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
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Journal ArticleDOI
Rong Ma1, Yan-Li Ji1, Xiao-Dan Weng1, Quan-Fu An1, Congjie Gao 
TL;DR: In this paper, N-aminoethyl piperazine propane sulfonate (AEPPS) was added into m-phenylenediamine (MPD) aqueous solution to react with trimesoyl chloride (TMC) via interfacial polymerization to fabricate zwitterionic thin film composite reverse osmosis membrane (TFCMZs).

87 citations

Journal ArticleDOI
TL;DR: This article reviews removal of the precursors and DBPs by different membrane filtration methods such as Microfiltration (MF), Ultra filtration (UF), Ultrafiltration(UF), Nanofiltration (NF) and Reverse Osmosis (RO) techniques.
Abstract: Disinfection by-products (DBPs) have heterogeneous structures which are suspected carcinogens as a result of reactions between NOMs (Natural Organic Matter) and oxidants/disinfectants such as chlorine. Because of variability in DBPs characteristics, eliminate completely from drinking water by single technique is impossible. The current article reviews removal of the precursors and DBPs by different membrane filtration methods such as Microfiltration (MF), Ultrafiltration (UF), Nanofiltration (NF) and Reverse Osmosis (RO) techniques. Also, we provide an overview of existing and potentially Membrane filtration techniques, highlight their strengths and drawbacks. MF membranes are a suitable alternative to remove suspended solids and colloidal materials. However, NOMs fractions are effectively removed by negatively charged UF membrane. RO can remove both organic and inorganic DBPs and precursors simultaneously. NF can be used to remove compounds from macromolecular size to multivalent ions.

87 citations

Journal ArticleDOI
TL;DR: In this paper, the authors evaluated the environmental impacts caused by drinking water consumption in Barcelona (Spain) using the Life Cycle Assessment (LCA) methodology, and showed that tap water consumption was the most favourable alternative, while bottled water presented the worst results due to the higher raw materials and energy inputs required for bottles manufacturing, especially in the case of glass bottles.

87 citations

Journal ArticleDOI
05 May 2017
TL;DR: In this paper, the authors report outcomes of a pilot trial and practical assessment of direct contact membrane distillation (DCMD) towards achieving zero liquid discharge at a textile manufacturing plant.
Abstract: This work reports outcomes of a pilot trial and practical assessment of direct contact membrane distillation (DCMD) towards achieving zero liquid discharge at a textile manufacturing plant. Treatment of textile wastewater is difficult due primarily to the complexity of textile processing and the wastewater produced. Combined effluent from the site, either untreated or treated with the site's existing flocculation and biological processes, were considered as the feeds to the MD testing. Initial bench scale studies found rapid membrane wetting appeared to be avoided by the novel use of foam fractionation on the untreated effluent, or by using the conventionally treated effluent. The trial was conducted on treated effluent using fractionation on a side stream within the MD process, and no wetting was observed over the entire 3 month trial duration. The flux of the 6.4 m2 membrane module started at 5 L m−2 h−1 and declined to 2 L m−2 h−1 after more than 65 days. Caustic cleaning effectively restored flux to 4 L m−2 h−1. A 41-fold increase in feed concentration was verified by sulphate measurements, increasing from 567 mg L−1 to 23 000 mg L−1. After concentrating in the hot cycle, all ammonia entering the DCMD plant from the feedwater was found to evolve into the permeate, but non-volatile sulphate rejection was >99.9%. Water recovery at the end of the trial was 91.6%. A plant integration assessment found that zero liquid discharge would be feasible if saline waste streams were isolated and reverse osmosis processes were coupled with MD harnessing waste heat. MD application to current and future treatment scenarios with waste heat integration to textile processing appears viable.

87 citations

Journal ArticleDOI
TL;DR: In this paper, the authors describe properties of low fouling membrane technology and present results of its application with conventional and capillary pretreatment in municipal wastewater reclamation applications and compare with that of conventional membrane technology.

87 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
2023553
20221,099
2021636
2020782
20191,087
20181,331