Membrane processes for water recovery and decontamination (original) (raw)
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2017
Today, membrane separation technologies are widely used in many areas of water and wastewater treatment. Membrane processes can be used to produce potable water from surface water, groundwater, brackish water, or seawater, or to treat industrial wastewaters before they are discharged or reused. Membrane separation systems have many advantages over traditional water or wastewater treatment processes, lower operating and maintenance costs in comparison to conventional systems consisting of coagulation, clarification, and aerobic and anaerobic treatments. • Membrane separation systems are easy to operate and the performance is more reliable. • Membrane systems give a compact and modular construction, which occupies less floor space in comparison to the conventional treatment systems. In this review, we will introduce fundamental concepts of the membrane and membrane-separation processes, such as membrane definition, membrane classification, membrane formation, module configuration, tra...
Pretreatment of Water before Application of Membrane Separation: Focus on NOM Removal
https://www.ijrrjournal.com/IJRR\_Vol.4\_Issue.1\_Jan2017/Abstract\_IJRR004.html, 2017
Water reuse and recycle is becoming important for conservation of water resources. Primary, secondary and tertiary treatments with physical, biological and chemical techniques are conventionally used for treatment. The physico-chemical treatments are widely used for water treatment and removal of organic matter. Use of membrane separation can be done for water purification. Many investigators have explored possibility of use of membrane separation for wastewater and domestic water treatment. The membranes are prone to contaminate and undergo fouling. The presence of natural organic matter affects the membrane performance. The current review is aimed at reviewing research and studies on membrane separation for organic matter removal.
Handbook of Membrane Separations ISBN-13:978-0-8493-9549-9
Chapter: 3 Hybrid Liquid Membrane Processes with Organic Water-Immiscible Carriers (OHLM): Application in Chemical and Biochemical Separations Vladimir S Kislik Handbook of Membrane Separations, 2009 edited by Anil Pabby, Syed S.H. Rizvi, Anna Maria Sastre, 07/2009: chapter Chapter 13 of Handbook: pages 371-407; CRC Press, Taylor & Frencis Group., ISBN: 13:978-0-8493-9549-9 (hardcover)
Membrane separation systems---A research and development needs assessment
1990
Price: Printed copy A06 Microfiche A01 Codes are used for pricing all publications. The code is determined by the number of pages in publication. Information pertaining to the pricing codes can be found in current issues of the following publications, which are generally available in most libraries: Energy Research Abstracts (ERA); Government Reports Announcements and Index (GRA and I); Scientific
Liquid membranes: principles and applications in chemical separations and wastewater treatment
2009
Introduction 17 2. Mechanisms and Kinetics of Carrier-Facilitated Transport Through Liquid Membranes 18 2.1. Models of LM transport 18 2.2. Diffusion transport regime 25 2.2.1. Mathematical description of the diffusion transport 25 2.2.2. Determination of diffusion coefficients 28 v vi Contents 2.3. Chemical reactions' kinetics regime transport 30 2.3.1. Mathematical description of kinetic regime transport 32 2.3.2. Determination of kinetic parameters 34 2.4. Mixed diffusional-kinetic transport regime 37 2.4.1. Identification of the rate-controlling transport regimes 37 2.4.2. Basic parameters of transport regime 40 2.4.3. Determination of transport parameters 40 3. Driving Forces in Facilitated, Coupled Liquid Membrane Transport 45 4. Selectivity 48 5. Module Design Considerations for Separation Systems 50 6. Factors, Affecting Carrier-Facilitated Coupling Transport 56 6.1. Carrier properties 56 6.2. Solvent properties influencing transport 59 6.3. Membrane support properties 6.4. Coupling ions: Anion type 64 6.5. Influence of concentration polarization and fouling 65
Recent Advances in Water and Wastewater Treatment with Emphasis in Membrane Treatment Operations
Water
The present Special Issue brought together recent research findings from renowned scientists in this field and assembled contributions on advanced technologies that have been applied to the treatment of wastewater and drinking water, with an emphasis on novel membrane treatment technologies. The 12 research contributions highlight various processes and technologies that can achieve the effective treatment and purification of wastewater and drinking water, aiming (occasionally) for water reuse. The published papers can be classified into three major categories. (a) First, there are those that investigate the application of membrane treatment processes, either directly or in hybrid processes. The role of organic matter presence and fouling control is the main aim of the research in some of these studies. (b) Second, there are studies that investigate the application of adsorptive processes for the removal of contaminants from waters, such as arsenic, antimony, or chromate, with the ai...
Membrane Removal of Emerging Contaminants from Water: Which Kind of Membranes Should We Use?
Membranes
Membrane technologies are nowadays widely used; especially various types of filtration or reverse osmosis in households, desalination plants, pharmaceutical applications etc. Facing water pollution, they are also applied to eliminate emerging contaminants from water. Incomplete knowledge directs the composition of membranes towards more and more dense materials known for their higher selectivity compared to porous constituents. This paper evaluates advantages and disadvantages of well-known membrane materials that separate on the basis of particle size, usually exposed to a large amount of water, versus dense hydrophobic membranes with target transport of emerging contaminants through a selective barrier. In addition, the authors present several membrane processes employing the second type of membrane.
Introduction to membrane separations
Membrane separation is finally reaching a level of general acceptance as the powerful tool that it is for residential, commercial and industrial water treatment. Most dealers and users know about Reverse Osmosis separation technology, but there are other membrane separation technologies that you need to know more about.