Download or read book Use of Micellar enhanced Ultrafiltration and Ligand modified Micellar enhanced Ultrafiltration Processes to Remove Dissolved Metals and Organic Solutes from Aqueous Streams written by Bita Fillipi and published by . This book was released on 1997 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Use of Micellar enhanced Ultrafiltration to Remove Dissolved Organics and Multivalent Transition Metal Cations from Aqueous Streams written by Robert Ovington Dunn and published by . This book was released on 1987 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Micellar Enhanced Ultrafiltration written by Sirshendu De and published by CRC Press. This book was released on 2012-06-04 with total page 227 pages. Available in PDF, EPUB and Kindle. Book excerpt: A response to increasingly stringent regulation of pollution and toxicity levels in industrial waste discharge, Micellar Enhanced Ultrafiltration: Fundamentals & Applications offers the most complete book available on the benefits and use of micellar-enhanced ultrafiltration (MEUF) to achieve continuous removal of organic and inorganic pollutants. An Unparalleled Book That Addresses Both Academic and Industrial Points of View Several membrane-based techniques, such as microfiltration, ultrafiltration, nanofiltration, and reverse osmosis, are currently used in a wide range of applications throughout the textile, pulp and paper, sugar, chemical, pharmaceutical, biomedical, biotechnological, and food industries. However, although reverse osmosis is an effective means of removing contaminants, this book explains why MEUF is a better substitute, as it less expensive, less energy-intensive, and more efficient and practical for a wider range of applications. Topics covered include: Effects of pollution in water and its consequences Various treatment processes and membrane technologies Fundamentals of ultrafiltration Outline of various membrane modules and modeling approaches Principles of colloid chemistry Theories of micelle formation Stability and dynamics of micelles Phenomena of counterion binding Solubilization of organic pollutants Selection criteria for surfactants Various flux enhancement techniques Recovery of precious metals This book conveys how, with proper selection of surfactant and membrane, MEUF can be used to efficiently remove almost all metal ions (heavy metals, lanthanides, radioactive materials, etc.) with reasonably high efficiency and throughput. It also details the MEUF process for removal of inorganic (cations, anions, and their mixture) and organic pollutants. The authors explain how the economy of the overall process makes recovery and reuse of surfactants essential, and they address various influencing factors on the increase in throughput and the resulting operating problems. Elaborating on technologies involving precipitation and other methods, they also illustrate additional potential applications for MEUF technology.

Download or read book Encyclopedia of Surface and Colloid Science written by P. Somasundaran and published by CRC Press. This book was released on 2006 with total page 1148 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Use of Ligand modified Micellar enhanced Ultrafiltration to Selectively Separate Copper Ions from Wastewater Streams written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The selective removal of target ions from an aqueous solution containing ions of like charge by ligand-modified micellar-enhanced ultrafiltration (LM-MEUF), is presented. In LM-MEUF, surfactant and specially tailored ligand are added to the contaminated stream. The surfactant forms aggregates called micelles, the hydrocarbon core of which the ligand complexed with the target species will solubilize. The surfactant is chosen to have the same charge type as the target ion; therefore, other ions (with similar charge) will not associate with the micelle, which makes the separation of the target ion selective. The solution is then processed by ultrafiltration, using a membrane with pore size small enough to block the passage of the micelles. In this study the divalent copper is the target ion in the solution containing divalent calcium. The surfactant is cetylpyridinium chloride (CPC) and the ligand is 4-hexadecyloxybenzyliminodiacetic acid (C[sub 16]BIDA). Experiments were conducted with batch stirred cells and the results have been compared to separation that take place under a variety of conditions in the LM-MEUF process. Rejections of copper of up to 99.8% are observed, with almost no rejection of calcium, showing that LM-MEUF has excellent selectivity and separation efficiency.

Download or read book Metal ion Separation and Preconcentration written by Andrew H. Bond and published by . This book was released on 1999 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: The collection discusses the role of separations in nuclear processing, the influence and use of aqueous phases in separations, extractant design and synthesis, liquid-liquid and solid-liquid distribution, membrane separations, and supercritical fluid extractions. With a balance of fundamental and applied research, the book covers the most significant recent advances in metal ion separations.

Download or read book Micellar and Polymer enhanced Ultrafiltration for Heavy Metal and Sulfate Removal from Aqueous Solutions written by Weiyun Lin and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Micellar-enhanced ultrafiltration (MEUF) and polymer-enhanced ultrafiltration (PEUF) show potential as promising techniques to remove dissolved ions from wastewater, but they remain inadequately understood. In this thesis, the MEUF removal of copper, nickel, and cobalt ions from aqueous solutions was investigated. The effect of surfactant-to-metal (S/M) ratio and pH on MEUF performance (i.e., metal rejection rate and permeate flux) were examined to obtain the preferred operational conditions. A resampling-based artificial neural network (ANN) modeling was proposed as a promising tool to predict the MEUF performance and to reveal the importance of process parameters. The model-predicted values showed good agreement with experimental data (R2 > 0.99). S/M ratio and pH had relatively greater contributions to the system performance, whereas sampling time contributed less. A high MEUF efficiency (Rejection > 99%) was achieved. To optimize the system performance and to observe the interactions among operational parameters, the statistical-based response surface methodology (RSM) was used to overcome the drawbacks of the commonly used one-factor-at-a-time method. The thesis is the first study to use an RSM method based on a Box-Behnken design to examine nickel ion removal in a MEUF system while combine with an ANN model. The generated RSM models described the relationship between each performance indicator (nickel rejection rate or permeate flux) and process variables (transmembrane pressure, feed nickel concentration, feed surfactant concentration, and membrane molecular weight cut-off (MWCO) of the membrane). Both RSM and ANN methods adequately described the performance indicators within the examined ranges of the process variables. Next, the thesis targets on sulfate ions, a dissolved anion of increasing concern but not tackled in the MEUF/PEUF field. The thesis is the first study to use MEUF and PEUF to remove sulfate ions as the target component from aqueous solutions. It is also the first to examine the adsorption mechanism of sulfate to surfactant/polymer in such systems. Both MEUF and PEUF were found technically viable to remove sulfate from aqueous streams, with the highest rejection rate (Rejection > 99%) found in dilute sulfate solutions. Further, adsorption equilibrium and kinetics studies show that Freundlich isotherm and pseudo-second-order kinetics can describe the adsorption process. This thesis adds knowledge to the existing MEUF/PEUF techniques by improving system operation, conducting system optimization, and exploring new components (i.e., sulfate ions) that can be removed. It also provides treatment information and potentially facilitates reservoir souring control and mining wastewater treatment.

Download or read book The Use of Surfactant Mixtures in Removal of Heavy Metals from Aqueous Streams Using Micellar Enhanced Ultrafiltration written by Lori Lynn Walker Brant and published by . This book was released on 1991 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dissertation Abstracts International written by and published by . This book was released on 1997 with total page 830 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Nanofiltration Mediated by Surfactant Micelles Micellar Enhanced Ultrafiltration written by Senay Taşcıoğlu and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Surfactant micelle-assisted removal of ions and organic solutes from aqueous media by micellar enhanced ultrafiltration (MEUF), which is a membrane separation technique, is discussed in detail. Following general information about micellar structure, counterion binding, substrate solubilization, and medium effect functions of micelles which enable separation of cationic or anionic ions and organic molecules from aqueous media by MEUF are explained in a comprehensive manner. Some of the recent studies on removing pollutants from wastewater effluents of industrial plants by MEUF, and their results have been summarized to inform about the factors affecting the removal efficiency of this technique. Methods for recovery of surfactant and contaminants from retentate or permeate solutions are also given. Selective separation of metal ions of the same charge from multicomponent solutions is another topic of this chapter. In this context, the last part of the chapter provides an overview on every aspects of ligand modified MEUF (LM-MEUF) process. This report comprises a comprehensive review of MEUF and LM-MEUF studies in the literature.

Download or read book Use of Ligand modified Micellar enhanced Ultrafiltration to Slectively Separate Copper Ions from Wastewater Streams written by Susan Bakhtiari Shadizadeh and published by . This book was released on 1992 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Simultaneous Removal of Benzene and Copper from Water and Wastewater Using Micellar enhanced Ultrafiltration written by Mohammed Ridha Zaid Ahmed and published by . This book was released on 2010 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: To remove metal ions and/or organic molecules from aqueous solutions is a difficulty commonly encountered in the treatment of contaminated water. Traditional ultrafiltration is usually used to separate the high molecular weight molecules and is ineffective in removing heavy metal ions or organic molecules with small molecular weights. Micellar-enhanced ultrafiltration (MEUF) is an effective technique to remove contaminants that traditional ultrafiltration cannot remove. Micellar-enhanced ultrafiltration makes use of the micellar properties of surfactant solutions to remove dissolved ions and/or organics from aqueous streams. Chemical surfactants have proven effective. However compared to biosurfactants they are toxic and create a secondary problem since part of the surfactant monomers frequently leak through the pores of membrane filters. This study is an attempt to examine the effect of rhamnolipid biosurfactant, JBR 425, on contaminant removal from aqueous solutions. The required quantity of rhamnolipid to remove the copper ions as a heavy metal pollutant and benzene molecules as an organic pollutant separately has been determined for different concentrations of pollutants. This quantity, the molar ratio (MR), was 6.25 to obtain a 100% rejection for the copper ions and 1.33 to obtain the same rejection of benzene molecules. When copper and benzene were mixed, these molar ratios have been either improved as in benzene molar ratio which was decreased from 1.33 to 0.56 or remained the same as in copper molar ratio but in all cases rhamnolipid JBR 425 proved of excellent efficiency in the removal of contaminants and a rejection of 100% has been obtained for copper and benzene either separately or simultaneously which is the objective of this study.

Download or read book American Doctoral Dissertations written by and published by . This book was released on 1996 with total page 872 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Use of Rhamnolipid to Remove Heavy Metals from Aqueous Streams Via Micellar Enhanced Ultrafiltration written by Mohamed Abdel Monem El Zeftawy and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Summaries of FY Research in the Chemical Sciences written by and published by . This book was released on 1989 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Removal of N alcohols from an Aqueous Stream Using Micellar enhanced Ultrafiltration written by Lesley Lane Gibbs and published by . This book was released on 1985 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book De aarde onze woonplats written by and published by . This book was released on 1971 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: