Special Issue "Advances in Reverse Osmosis Membranes and Processes"

A special issue of Membranes (ISSN 2077-0375). This special issue belongs to the section "Fundamentals of Membrane Processes".

Deadline for manuscript submissions: 31 August 2020.

Special Issue Editors

Dr. Lee Nuang Sim
Website
Guest Editor
Singapore Membrane Technology Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, Singapore
Interests: reverse osmosis; fouling; fouling detection; fouling control; process design
Dr. Jia Shin Ho
Website
Guest Editor
Singapore Membrane Technology Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, Singapore
Interests: reverse osmosis; fouling; fouling detection; fouling control; biofouling

Special Issue Information

Dear Colleagues,

Reverse osmosis (RO) technology is a well-established process that is typically used for the production of drinking and/or industrial reusable water from brackish water, seawater, and wastewater. Although widely used in most desalination plants, the RO process still requires further improvement in terms of separation efficiency, energy consumption, and fouling control. The separation efficiency of the RO process, in particular, not only depends on membrane material but also requires strong developments in membrane engineering, such as module design, fouling detection, and control strategies, as well as upstream pre-treatment technologies.

This Special Issue is dedicated to providing comprehensive coverage on the recent developments in RO membrane design, fabrication, and processes. Potential topics include, but are not limited to, the fabrication of RO membrane using novel materials and fabrication methods, the optimization of the RO process through module and process design, fouling detection methods and fouling control strategies, and pre-treatment technologies to enhanced RO processes. Authors are invited to submit their latest results; both original papers and reviews are welcome.

Dr. Lee Nuang Sim
Dr. Jia Shin Ho
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Membranes is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Desalination
  • Reverse osmosis membrane
  • Membrane fabrication
  • Membrane module design
  • Novel membrane
  • Fouling
  • RO pre-treatment
  • Process optimization

Published Papers (2 papers)

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Research

Open AccessArticle
Recovery of Aromatics from Orange Juice Evaporator Condensate Streams by Reverse Osmosis
Membranes 2020, 10(5), 92; https://doi.org/10.3390/membranes10050092 - 08 May 2020
Abstract
The aim of this work was to analyze the potential of reverse osmosis (RO) membranes in the recovery and concentration of aroma compounds from orange juice evaporator condensate (EC) streams. Concentration experiments were performed by using three RO spiral-wound aromatic polyamide membranes (SG1812C-34D, [...] Read more.
The aim of this work was to analyze the potential of reverse osmosis (RO) membranes in the recovery and concentration of aroma compounds from orange juice evaporator condensate (EC) streams. Concentration experiments were performed by using three RO spiral-wound aromatic polyamide membranes (SG1812C-34D, SC1812C-34D and SE1812) with different NaCl rejections. The effect of transmembrane pressure, axial feed flowrate and volume concentration ratio (VCR) on permeate flux was studied. Rejections of the investigated membranes towards specific aroma compounds (octanol, α-terpineol, terpinen-4-ol, cis-carveol, karvon, linalool) in selected operating conditions were also evaluated. The concentrations of the aroma compounds were determined by gas chromatography coupled with mass spectrometry (GC-MS) using headspace solid-phase microextraction (HS-SPME) as a sample preparation approach. For all selected membranes, the permeate flux increased linearly by increasing the operating pressure from 5 to 25 bar; on the other hand, the feed flowrate did not have any significant effect on the permeate flux. High retention values towards aroma compounds (>80%) were measured for all selected membranes. However, the SC membrane showed the highest rejection values (>96%) and the best correlation between concentration factor of aroma compounds and VCR. Full article
(This article belongs to the Special Issue Advances in Reverse Osmosis Membranes and Processes)
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Open AccessArticle
Exclusion of Estrogenic and Androgenic Steroid Hormones from Municipal Membrane Bioreactor Wastewater Using UF/NF/RO Membranes for Water Reuse Application
Membranes 2020, 10(3), 37; https://doi.org/10.3390/membranes10030037 - 27 Feb 2020
Cited by 2
Abstract
In the context of water scarcity, domestic secondary effluent reuse may be an option as a reliable source for alleviating acute water shortage. The increasing risks linked with the presence of natural steroid hormones and many emerging anthropogenic micropollutants (MPs) passing through municipal [...] Read more.
In the context of water scarcity, domestic secondary effluent reuse may be an option as a reliable source for alleviating acute water shortage. The increasing risks linked with the presence of natural steroid hormones and many emerging anthropogenic micropollutants (MPs) passing through municipal wastewater treatment works (MWWTWs) are of concern for their endocrine-disrupting activities. In this study, domestic wastewater treated by a full-scale membrane bioreactor (MBR) at an MWWTW in the Western Cape Province, South Africa, was used directly as the influent to a reverse osmosis (RO) pilot plant for the removal of selected natural steroid hormones 17β-estradiol (E2) and testosterone (T) as a potential indirect water recycling application. Estrogenicity and androgenicity were assessed using the enzyme-linked immunosorbent assays (ELISA) and the recombinant yeast estrogen receptor binding assays (YES). The influent pH and flux did not influence the rejection of E2 and T, which was most likely due to adsorption, size exclusion, and diffusion simultaneously. RO and nanofiltration (NF) exhibited excellent removal rates (>95%) for E2 and T. All the E2 effluent samples with MBR/ultrafiltration (UF), MBR/NF, and MBR/RO were lower than the US EPA and WHO trigger value of 0.7 ng/L, as well as the predicted no-effect concentration (PNEC) values for fish (1 ng E2/L). Full article
(This article belongs to the Special Issue Advances in Reverse Osmosis Membranes and Processes)
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