Use Of Rhamnolipid To Remove Heavy Metals From Aqueous Streams Via Micellar Enhanced Ultrafiltration

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Use of Rhamnolipid to Remove Heavy Metals from Aqueous Streams Via Micellar Enhanced Ultrafiltration

Author : Mohamed Abdel Monem El Zeftawy
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (11 download)

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Book Synopsis Use of Rhamnolipid to Remove Heavy Metals from Aqueous Streams Via Micellar Enhanced Ultrafiltration by : Mohamed Abdel Monem El Zeftawy

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 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this research, the rhamnolipid biosurfactant was utilized in micellar-enhanced ultrafiltration (MEUF) of heavy metals from contaminated waters. The effects of different major operating conditions on the (MEUF) system performance were investigated for copper, zinc, nickel and cadmium using two membranes. The optimal conditions were successfully applied to treat six contaminated wastewaters from metal refining industries and three contaminated groundwaters using the two membranes (> 99% rejection ratio). To efficiently choose the most influential factors to the MEUF system, optimization by the response surface methodology approach was utilized and data quality was examined. Three studies were performed in order to investigate the mechanism and the interactions between the heavy metal ions and the rhamnolipid micelles in the rhamnolipid-based UF system. The first study successfully investigated the applicability of Gouy-Chapman approach for binding of heavy metal ions to rhamnolipid biosurfactant in the MEUF system and the mechanism via electrostatic attraction was suggested. The second study efficiently evaluated binding behavior of the four heavy metal ions individually and collectively onto the rhamnolipid. The order was Cu 2+> Cd 2+> Zn 2+> Ni 2+ .The third study analyzed the equilibrium data using Langmuir, Freundlich, and linear adsorption models. The Freundlich model fitted the data better and the K F values were from 1.3 to 6.1. In addition, solidification/stabilization (S/S) technology was successfully used to stabilize solid wastes contaminated with heavy metal. Furthermore, preliminary trials were performed to examine the recovery of the rhamnolipid from the retentates for possible reuse. The amounts recovered ranged from 12 ± 1% to 18 ± 1% of the rhamnolipid concentration initially present in the retentate. Similarly, preliminary trials to reuse water from the retentates were investigated. The total portions recovered ranged from about 81.0 ± 0.34% to 82.3 ± 0.46$% of the total feed water. This work may be used as preliminary investigations for further detailed pilot and/or large-scale studies to treat contaminated groundwater and industrial wastewater.

The Use of Surfactant Mixtures in Removal of Heavy Metals from Aqueous Streams Using Micellar Enhanced Ultrafiltration

Author : Lori Lynn Walker Brant
Publisher :
ISBN 13 :
Total Pages : 156 pages
Book Rating : 4.:/5 (464 download)

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Book Synopsis The Use of Surfactant Mixtures in Removal of Heavy Metals from Aqueous Streams Using Micellar Enhanced Ultrafiltration by : Lori Lynn Walker Brant

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:

Simultaneous Removal of Benzene and Copper from Water and Wastewater Using Micellar-enhanced Ultrafiltration

Author : Mohammed Ridha Zaid Ahmed
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (11 download)

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Book Synopsis Simultaneous Removal of Benzene and Copper from Water and Wastewater Using Micellar-enhanced Ultrafiltration by : Mohammed Ridha Zaid Ahmed

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.

Micellar Enhanced Ultrafiltration

Author : Sirshendu De
Publisher : CRC Press
ISBN 13 : 1439895686
Total Pages : 227 pages
Book Rating : 4.4/5 (398 download)

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Book Synopsis Micellar Enhanced Ultrafiltration by : Sirshendu De

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.

The Use of Micellar-enhanced Ultrafiltration to Remove Dissolved Organics and Multivalent Transition Metal Cations from Aqueous Streams

Download The Use of Micellar-enhanced Ultrafiltration to Remove Dissolved Organics and Multivalent Transition Metal Cations from Aqueous Streams PDF Online Free

Author : Robert Ovington Dunn
Publisher :
ISBN 13 :
Total Pages : 522 pages
Book Rating : 4.:/5 (25 download)

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Book Synopsis The Use of Micellar-enhanced Ultrafiltration to Remove Dissolved Organics and Multivalent Transition Metal Cations from Aqueous Streams by : Robert Ovington Dunn

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:

Micellar- and Polymer-enhanced Ultrafiltration for Heavy Metal and Sulfate Removal from Aqueous Solutions

Author : Weiyun Lin
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (132 download)

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Book Synopsis Micellar- and Polymer-enhanced Ultrafiltration for Heavy Metal and Sulfate Removal from Aqueous Solutions by : Weiyun Lin

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.

Use of Micellar-enhanced Ultrafiltration and Ligand-modified Micellar-enhanced Ultrafiltration Processes to Remove Dissolved Metals and Organic Solutes from Aqueous Streams

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Author : Bita Fillipi
Publisher :
ISBN 13 :
Total Pages : 304 pages
Book Rating : 4.:/5 (464 download)

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Book Synopsis Use of Micellar-enhanced Ultrafiltration and Ligand-modified Micellar-enhanced Ultrafiltration Processes to Remove Dissolved Metals and Organic Solutes from Aqueous Streams by : Bita Fillipi

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:

Removal of N-alcohols from an Aqueous Stream Using Micellar-enhanced Ultrafiltration

Author : Lesley Lane Gibbs
Publisher :
ISBN 13 :
Total Pages : 92 pages
Book Rating : 4.:/5 (787 download)

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Book Synopsis Removal of N-alcohols from an Aqueous Stream Using Micellar-enhanced Ultrafiltration by : Lesley Lane Gibbs

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:

Surfactant-based Ultrafiltration of Heavy Metal Ions from Aqueous Streams

Author : Yi-Chu Huang
Publisher :
ISBN 13 :
Total Pages : 470 pages
Book Rating : 4.:/5 (349 download)

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Book Synopsis Surfactant-based Ultrafiltration of Heavy Metal Ions from Aqueous Streams by : Yi-Chu Huang

Download or read book Surfactant-based Ultrafiltration of Heavy Metal Ions from Aqueous Streams written by Yi-Chu Huang and published by . This book was released on 1994 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Wastewaters from metal finishing facilities often contain a variety of toxic substances in dilute solution. Surfactant-based ultrafiltration (UF), which combines the high flux of UF with the high selctivity of surfactants, is applied to separate dissolved heavy metals from simulated and real wastewaters using natural surfactants such as derivatives of cholesterol and lecithins. The underlying principle is to increase the size of target metal ions by fixing them to larger surfactant macromolecules so they can be retained by a compatible membrane."--leaf iii.

Use of Ligand-modified Micellar-enhanced Ultrafiltration to Selectively Separate Copper Ions from Wastewater Streams

Author :
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (685 download)

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Book Synopsis Use of Ligand-modified Micellar-enhanced Ultrafiltration to Selectively Separate Copper Ions from Wastewater Streams by :

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.

Polymer-enhanced Diafiltration (PEDF) Using Bacterial Poly-[gamma]-glutamic Acid for the Removal of Heavy Metals from Aqueous Streams

Author : Adam J. Fowler
Publisher :
ISBN 13 :
Total Pages : 262 pages
Book Rating : 4.:/5 (532 download)

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Book Synopsis Polymer-enhanced Diafiltration (PEDF) Using Bacterial Poly-[gamma]-glutamic Acid for the Removal of Heavy Metals from Aqueous Streams by : Adam J. Fowler

Download or read book Polymer-enhanced Diafiltration (PEDF) Using Bacterial Poly-[gamma]-glutamic Acid for the Removal of Heavy Metals from Aqueous Streams written by Adam J. Fowler and published by . This book was released on 1999 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Biomanagement of Metal-Contaminated Soils

Author : Mohammad Saghir Khan
Publisher : Springer Science & Business Media
ISBN 13 : 9400719140
Total Pages : 523 pages
Book Rating : 4.4/5 (7 download)

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Book Synopsis Biomanagement of Metal-Contaminated Soils by : Mohammad Saghir Khan

Download or read book Biomanagement of Metal-Contaminated Soils written by Mohammad Saghir Khan and published by Springer Science & Business Media. This book was released on 2011-08-30 with total page 523 pages. Available in PDF, EPUB and Kindle. Book excerpt: Heavy-metal contamination is one of the world's major environmental problems, posing significant risks to agro-ecosystems. Conventional technologies employed for heavy-metal remediation have often been expensive and disruptive. This book provides comprehensive, state-of-the-art coverage of the natural, sustainable alternatives that use a wide range of biological materials in the removal/detoxification of heavy metals, consequently leading to the improvement of crops in these soils. Novel, environmentally friendly and inexpensive solutions are presented based on a sound understanding of metal contamination and the roles of plants and microbes in the management of these toxic soils. Written by worldwide experts, the book provides not only the necessary scientific background but also addresses the challenging questions that require special attention in order to better understand metal toxicity in soils and its management through bioremediation.

Environmental Degradation: Causes and Remediation Strategies

Author : Vinod Kumar
Publisher : Agro Environ Media, Publication Cell of AESA, Agriculture and Environmental Science Academy,
ISBN 13 : 8194201721
Total Pages : 214 pages
Book Rating : 4.1/5 (942 download)

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Book Synopsis Environmental Degradation: Causes and Remediation Strategies by : Vinod Kumar

Download or read book Environmental Degradation: Causes and Remediation Strategies written by Vinod Kumar and published by Agro Environ Media, Publication Cell of AESA, Agriculture and Environmental Science Academy,. This book was released on 2020-03-10 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: The compliance of this book is helpful for academicians, researchers, students, as well as other people seeking the relevant material in current trends of studies on the topic of environmental degradation.

Consequences of Microbial Interactions with Hydrocarbons, Oils, and Lipids: Production of Fuels and Chemicals

Author : Sang Yup Lee
Publisher : Springer
ISBN 13 : 9783319504353
Total Pages : 0 pages
Book Rating : 4.5/5 (43 download)

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Book Synopsis Consequences of Microbial Interactions with Hydrocarbons, Oils, and Lipids: Production of Fuels and Chemicals by : Sang Yup Lee

Download or read book Consequences of Microbial Interactions with Hydrocarbons, Oils, and Lipids: Production of Fuels and Chemicals written by Sang Yup Lee and published by Springer. This book was released on 2018-04-06 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers the current states of microbial and related technologies that have been developed for the efficient production of chemicals, fuels and materials by integrating strain and enzyme development, fermentation processes, and downstream processes. The book also covers how microbes and microbial products can be employed to facilitate petroleum recovery. Global consequences of bio-based production of chemicals, fuels and materials are also discussed with insights.

Biosurfactants

Author : Naim Kosaric
Publisher : CRC Press
ISBN 13 : 1466596708
Total Pages : 384 pages
Book Rating : 4.4/5 (665 download)

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Book Synopsis Biosurfactants by : Naim Kosaric

Download or read book Biosurfactants written by Naim Kosaric and published by CRC Press. This book was released on 2014-11-03 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stresses the Potential Applications of Biosurfactants in Various IndustriesEnvironmental concerns and a demand for sustainable chemical production have become important issues in recent years. As a result, microbial biosurfactant-producing systems are gaining momentum as potential replacements for chemical surfactants. Biosurfactants: Production an

Biosurfactants

Author : Naim Kosaric
Publisher : CRC Press
ISBN 13 : 9780824788117
Total Pages : 504 pages
Book Rating : 4.7/5 (881 download)

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Book Synopsis Biosurfactants by : Naim Kosaric

Download or read book Biosurfactants written by Naim Kosaric and published by CRC Press. This book was released on 1993-02-17 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt: Providing comprehensive discussions of the physical and chemical properties, manufacture, and industrial uses of biosurfactants, this reference offers first-hand accounts of biosurfactant research of leading biotechnology laboratories. It introduces promising possible uses of biosurfactants in medicine, in environmental control, and for marine organisms. In contributions of more than 30 leading international experts, the text reviews the biosynthetic mechanisms for surfactants and their precursor molecules; explicates the biophysics of microbial surfactants and examines the production of immobilized biocatalysts, lipopeptides, and rhamnolipids. It also presents information on the economics of biosurfactants.

Biosurfactants

Author : Ramkrishna Sen
Publisher : Springer Science & Business Media
ISBN 13 : 1441959793
Total Pages : 356 pages
Book Rating : 4.4/5 (419 download)

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Book Synopsis Biosurfactants by : Ramkrishna Sen

Download or read book Biosurfactants written by Ramkrishna Sen and published by Springer Science & Business Media. This book was released on 2010-12-31 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: The microbial world has given us many surprises including microbes that grow under extremely harsh conditions (122C at 40 MPa), novel metabolisms such as the uranium and perchlorate reduction, and novel chemicals that can be used to control diseases. We continually face new and difficult problems such as the need to transition to more carbon-neutral energy sources and to find eco-friendly chemicals and to find new drugs to treat disease. Will it be possible to tap into the seemingly limitless potential of microbial activity to solve our current and future problems?The answer to this question is probably yes. We are already looking to the microbial world to provide new energy sources, green chemicals to replace those made from petroleum, and new drugs to fight disease. To help us along these paths, we are deciphering how microorganisms interact with each other. We know that microbial populations interact and communicate with each other. The language that microbes use is chemical where small molecules are exchanged among different microbial cells. Sometimes, these chemicals suppress activities of competitors and could be used as antibiotics or may have other therapeutic uses. Other times, the chemicals stimulate complex responses in microbial populations such as fruiting body or biofilm formation. By understanding the conversation that microbes are having among themselves, e. g.