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Effective ion exchange for challenging water-treatment needs
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  1. Liquid Chromatography Blog
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Liquid Chromatography Blog

Ion Exchange System Operation. This course is intended for people interested in the operation of ion exchange systems. The presentation will focus on how the resins are used covering performance drivers and system operations. Optimal Cleaning of Reverse Osmosis Membranes. This course is intended for people interested in chemical cleaning of reverse osmosis RO systems.


  1. Ion Exchange Fundamentals - Ion Exchange in Environmental Processes - Wiley Online Library;
  2. Ion exchange chromatography: overview.
  3. Ion chromatography.
  4. The Wild Food Trailguide!

This course will cover the ideal cleaning situation, the real cleaning situation, when to clean and what chemicals should be used. Ion Exchange Resins - Maintenance and Troubleshooting. This presentation will explain how to monitor and maintain your IX systems to get the best performance and also provide troubleshooting tips to help recognize early warning signs to prevent system upsets.

Reverse Osmosis Troubleshooting. This course will cover topics such as: 1 precursors to issues, 2 useful information and questions to ask when an issue occurs, 3 common symptoms, examples, and corrective measures for problems stemming from fouling, mechanical damage, and chemical damage. Ultrafiltration Troubleshooting and Cleaning.

Introduction to Ion-exchange chromatography

This webinar is designed for individuals who wish to learn about cleaning and troubleshooting Ultrafiltration systems. We are going to show how to use the Normalization Table to properly identify operational issues and the possible action to correct it. Details on cleaning and operational changes will be showed and the possible variables that can end-up impacting an Ultrafiltration system operations.

During the cleaning topic we will look into key performance indicators for Ultrafiltration Systems that should trigger a membrane cleaning process and why to perform it. We will go throw details on how to perform them with preparation of cleaning solutions, standard cleaning procedures and tips for a successful Cleaning In Place CIP. At the end of the Webinar attendees should be able to plan and implement effective membrane cleaning strategies. Have you found that unexpected feed water quality changes can be very challenging for membrane systems?

Ultrafiltration skids as pre-treatment for an RO system is a great advantage.


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  • (PDF) Fundamentals of Ion Exchange DOWEX Ion Exchange Resins | shakeela amira - maganabahsre.gq.
  • Learn why with Dow expert Andrea Lima. The feed spacer in spiral wound reverse osmosis RO membrane elements addresses the structural requirement for an open feed channel and also provides mixing that reduces fouling and solute enrichment at the membrane surface. Alternative sources of water are needed and one solution is reusing water. Water is the single most important chemical compound for survival, and is also a vital element for industries and many manufacturing processes. The need for industrial water reuse will be discussed along with how several industries use water and have implemented water reuse solutions.

    Case studies will be reviewed to demonstrate how Ultrafiltration supports water reuse in a variety of applications. Reverse Osmosis System Design Basics. This course is intended for people who are interested in system design for reverse osmosis, but have not designed systems or have limited design experience. We will start from the basics and teach the theory behind the decisions typically made.

    This course will show you how to choose the right configuration, optimize the element choice, understand design guidelines, and provide a real life example design. Advanced Reverse Osmosis System Design. The advanced RO technology webinar is intended for those with a basic knowledge of RO system design and terminology. Topics that will be covered in this webinar include techniques for RO array hydraulic balancing and selection criteria for advanced RO system designs such as 2-pass RO systems, split permeate RO design, hybrid array designs with multiple element selection and internally staged RO designs with multiple element selection.

    This webinar focuses on the theoretical side of advanced plant design. The tricks how to compute these designs in ROSA simulation software will be covered at a follow up event. At the same time, production from both new and aging oil fields is creating specific challenges related to the treatment of co-produced waters. Denise will guide you into the depths of the morgue and help to shine the light on the guts of element postmortems.

    Understanding the process in element necropsy and the types of data that can be obtained will provide key tools in your troubleshooting quiver to help resolve chronic or acute plant operation and fouling issues. Ultrafiltration UF is a process necessitating frequent interruption; reverse-osmosis RO thrives on stability and continuous operation — the two have very different demands.

    Traditional integrated membrane systems incorporate a break tank between the processes which serves to handle issues of redundancy and flow management. Elimination of this tank presents both opportunities and challenges for process engineers. This presentation includes a discussion of the theory behind a common direct-coupling process control philosophy, best practice and recommendations, and a desalination plant case study.

    Improving Productivity and Efficiency of Ultrafiltration Modules.

    Ion-exchange Resin

    Water filtration products and technologies continue to improve their productivity and efficiency in order to lower the cost of water. Ultrafiltration is a category of water filtration that is used to remove solids that are typically larger than nm and used in a wide variety of industrial and drinking water applications. Productivity and efficiency of ultrafiltration products has increased over the past 20 years by focusing on two areas; module and fiber optimization.

    This presentation will provide a brief overview of the Fundamentals of ultrafiltration technology with an emphasis on hollow fiber membrane technologies and characteristics. Case studies and examples will be provided for a variety of water types using a new high permeability fiber to demonstrate the impact of module productivity, efficiency and cost of water.

    Hardness in feedwater can cause issues with scaling in RO requiring the use of antiscalants and precluding the ability to pH adjust to obtain optimum rejection of weak acid such as silica and boron. This webinar will focus on using ion exchange resin as a pretreatment option for softening prior to reverse osmosis treatment. This webinar will discuss applications using only ion exchange softening and ion exchange as a polisher to lime softening as well as the appropriate types of resin to use for various types of feedwater. The different cation resin chemistries and their effect on selectivity for hardness cations including barium and strontium will be discussed.

    Ways to achieve low hardness leakage by using a WAC resin in Na form and how to achieve low hardness leakage by system design will also be discussed. Commercial RO System Design. Point of Use Reverse Osmosis This session will focus on residential point-of-use reverse osmosis systems. The first part of the session will cover reverse osmosis fundamentals and factors which affect reverse osmosis performance. Ultrafiltration This webinar is designed for individuals who wish to learn about fundamentals of the Ultrafiltration UF technology, its characteristic, benefits and limitations.

    The course will cover details on the operational sequences and cleaning procedures. We are going to talk about some most common UF applications, where membrane systems in water treatment plants are applied and the reasons why it is quickly gaining foothold over the more traditional filtration techniques. Chromatography: Discovering New Separations. Chromatography using strong acid cation exchange resins is a key step in the multi-billion dollar food ingredient industry for the purification of sweeteners and organic acids in foods, fermentations, and feedstocks.

    In this webinar, we discuss the use of ion exchange resins in chromatographic processes to separate 40 different sugars, sugar alcohols, organic acids, and related compounds from one another.

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    The talk highlights mechanisms of separation and selection of appropriate resins for different purification needs. Are you interested in learning more about ion exchange systems downstream of reverse osmosis? Our educational webinar on will discuss ion exchange system operation considerations for both existing systems and new designs.

    By the end of the session, participants will understand the common configurations of ion exchange downstream of reverse osmosis, important parameters to be monitored, and potential for optimization. Our Technical Service Engineer, Matt Roth, will also be focusing on the potential impact of a change in the upstream reverse osmosis elements. Are you ready to take your knowledge of ion exchange resins to the next level?

    The educational webcast will provide an advanced look at how ion exchange resin performance is controlled by equilibrium and kinetic factors in industrial water systems. For those that operate an ion exchange system, understanding these two controlling principles will help you better evaluate current system performance, minimize the chance of problems, and if problems do occur, analyze them systematically to help formulate a clear approach to corrective action.

    Still learning the basics about ion exchange? Then we recommend viewing the on-demand introductory webinar as a pre-requisite. Ultrafiltration SEA. Robustness of Water Systems for Make-up Water. Reverse Osmosis Comparative of Ultrafiltration vs. Conventional Filtration. Brine treatment Solvent purification Precious metal recover Heterogeneous catalysis These are just a few of the applications that can be effectively treated using ion exchange resins. Ion-exchange chromatography separates molecules based on their respective charged groups. Ion-exchange chromatography retains analyte molecules on the column based on coulombic ionic interactions.

    The ion exchange chromatography matrix consists of positively and negatively charged ions. The stationary phase consists of an immobile matrix that contains charged ionizable functional groups or ligands. To achieve electroneutrality, these inert charges couple with exchangeable counterions in the solution. Ionizable molecules that are to be purified compete with these exchangeable counterions for binding to the immobilized charges on the stationary phase.

    These ionizable molecules are retained or eluted based on their charge. Initially, molecules that do not bind or bind weakly to the stationary phase are first to wash away. Altered conditions are needed for the elution of the molecules that bind to the stationary phase. The concentration of the exchangeable counterions, which competes with the molecules for binding, can be increased or the pH can be changed.

    A change in pH affects the charge on the particular molecules and, therefore, alters binding.

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    The molecules then start eluting out based on the changes in their charges from the adjustments. Further such adjustments can be used to release the protein of interest. Additionally, concentration of counterions can be gradually varied to separate ionized molecules. This type of elution is called gradient elution. On the other hand, step elution can be used in which the concentration of counterions are varied in one step. Positively charged molecules bind to cation exchange resins while negatively charged molecules bind to anion exchange resins.

    Cation exchange chromatography retains positively charged cations because the stationary phase displays a negatively charged functional group:. Before ion-exchange chromatography can be initiated, it must be equilibrated. The stationary phase must be equilibrated to certain requirements that depend on the experiment that you are working with. Once equilibrated, the charged ions in the stationary phase will be attached to its opposite charged exchangeable ions.

    Next, a buffer should be chosen in which the desired protein can bind to. After equilibration, the column needs to be washed.