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Basic Salinogen IonExchange Resins for Selective Nitrate Removal from Potable and Effluent Waters
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Basic Salinogen Ion-Exchange Resins for Selective Nitrate ~ ----- BASIC SALINOGEN ION-EXCHANGE RESINS FOR SELECTIVE NITRATE REMOVAL FROM POTABLE AND EFFLUENT WATERS by A. L. Walitt H. L. Jones Tyco Laboratories, Inc. Waltham, Massachusetts 02154 for the FEDERAL WATER QUALITY ADMINISTRATION DEPARTMENT OF THE INTERIOR Program #17010 FKF Contract #14-12-43 9 FWQA Project Officer, R. H. Wise Advanced Waste Treatment Research Laboratory Cincinnati, Ohio .
Basic salinogen ion-exchange resins for selective nitrate ~ Basic salinogen ion-exchange resins for selective nitrate removal from potable and effluent waters. Cincinnati, Advanced Waste Treatment Research Laboratory; for sale by the Supt. of Docs., U.S. Govt. Print.
Nitrate Removal Using Ion Exchange Resin / Purolite / www ~ Water chemistry, system design and intended use for the final water are critical factors to consider when choosing resin for nitrate removal but nitrate selective Strong Base Anion (SBA) resin such as Purolite ® A520E is highly effective for retraining nitrate ions. Purolite's ion exchange resins for nitrate removal are particularly beneficial.
New selective anion-exchange resins for nitrate removal ~ (4) used a non-nitrate-selective resin and hence inherited the disadvantages of concentration effects for nitrate at the end of a run (see Results and Discussion section) and decreased capacity due to sulfate. Other investigators have found similar disadvantages when attempting nitrate removal using resins which are not nitrate-selective (4,5,6).
Effect of ion-exchange resin structure on nitrate ~ A.L. Walitt, H.L. JonesBasic salinogen ion-exchange resins for selective nitrate removal from potable and effluent waters (14th edn.), Waste pollution control research Series, Advanced Waste Treatment Research Laboratory, Cincinnati, OH (December 1969)
Nitrate Removal by NSSR - INDION RESINS ~ • INDION NSSR is a macroporous strong basic anion resin which is tailor-made to suit removal of nitrate ions from water for potable use. • The proper mix of physico - chemical properties gives ideal nitrate exchange kinetics to this resin making it suitable for nitrate removal in the presence of sulphate ions.
(PDF) Nitrate, sulphate and phosphate removal from ~ Two types of strongly basic anion exchange resins; comprising a macroporous, standard type 1 resin and a nitrate selective resin (PA 202) were applied to the treatment of shallow well groundwater .
Removing nitrates with ion exchange / Water Tech Online ~ Nitrate-selective vs. standard resins. Ion exchange resins have long been used for nitrate removal. Generally speaking, there are two kinds from which to choose: "nitrate-selective" and "standard." The major difference between them is the relative affinity of multivalent ions like sulfate and arsenate.
Strong Base Anion Macroporous Nitrate Selective Resin ~ NSR Strong Base Anion Macroporous Nitrate Selective Resin Aldex NSR is a strong base anion exchange resin which is highly selective for nitrates over sulfates and other ions. Aldex NSR has a unique functional group that eliminates nitrate dumping even in the presence of high sulfates. Its resistance to
Nitrate Removal - ResinTech Inc. ~ ResinTech manufactures several nitrate selective ion exchange products based on higher amine functionalities and also provides standard Type I and type II strong base anion resins that can be used for nitrate removal.. Although all strong base anion resins prefer nitrate over chloride, at TDS suitable for potable water, the standard type I and type II resins prefer sulfate over nitrate.
Water Treatment - Nitrate Removal - Puritech ~ Nitrate selective exchange resins are now available to run even more efficient. They have a higher selectivity for nitrate over sulphate. The volume of the brine is largely dependent on the raw water quality and the configuration of the system.
Nitrate Removal Systems - SWT ~ A nitrate system should always follow an iron filter or a water softener in any multi-tank treatment system. • Iron will foul out a nitrate resin faster than a cation resin. • Both a water softener and a nitrate removal system use salt (sodium chloride) to regenerate.
Nitrate Removal by Ion Exchange / WWD ~ In the event of a service overrun with the nitrate selective resin, the highest nitrate level that can appear in the effluent is equal to the nitrate level in the influent. Resin Certification The standard Type 1 and Type 2 resins are listed by the U.S. Food and Drug Administration (FDA) for potable water applications in the USA.
Removal of nitrate from aqueous solution by nitrate ~ 2.2. Batch-mode sorption studies. Various amounts of resin (0.01–0.5 g) was contacted with 50 mL of NaNO 3 solution (100 mg-NO 3-/ L) equilibrated for 24 h at 30 °C with continuous shaking in shaker in order to find the optimum amount of resin concentration for nitrate removal from aqueous solution.. For adsorption isotherm study, 0.05 g of resin was contacted with 50 mL of NaNO 3 solution .
Nitrate Removal Systems - WTL Ireland ~ A nitrate removal system will remove nitrate from water. The most common nitrate removal method is by ion exchange resin. Point of use filters can give enough water for one tap or point of entry systems can treat the water for the whole house or factory. Why remove nitrate ? Nitrate levels in many waters are often high. Over 60% of nitrate .
High-Performance Nitrate Removal Ion Exchange System - WCP ~ Traditional ion exchange systems incorporating nitrate-selective resins have been used to remove nitrate. These produced a variable treated water quality, sometimes needing pH correction and intermittent high volumes of high-strength effluent, which typically must be stored onsite and then disposed of gradually to sewers or tankered offsite for .
Nitrate removal from water by an ion exchange ~ Relite A490 for nitrate removal were investigated. Materials and Methods Materials Strong base nitrate selective ion exchange resin Relite A490 was kindly provided by Resindion S.r.l., and A490 weak base anion exchanger Duolite A7 by Dow Chemical Company. Relite A490 is a porous strongly basic anion exchange resin having an outstanding
Selective Anion Exchange Resins for the Removal of ~ times better than the best commercial nitrate resin (Purolite A-520E) and more than an order of magnitude better than some nonselective commercial resins (e.g., Amberlite IRA-900). The bifunctional resins were particularly effective in removing trace quantities of ClO4-in groundwater to below the detection limit (~3 µg/L).
Nitrate absorbing Resins [Archive] - Koiphen ~ Ionac SR 7 is the first nitrate selective resin to receive NSF certification under NSF Standard 61 for potable water municipal installations as a process media. Earlier, NSF certified Sybron's Ionac C249 NS non-solvent softening resin under its Standard 44 for cation exchange water softeners and under Standard 61 as a process media.
METHOD 9210A POTENTIOMETRIC DETERMINATION OF NITRATE IN ~ potassium nitrate (dried for two hrs at 110 °C and stored in a desiccator) in reagent water and dilute to 1 L in a volumetric flask. Store in a clean bottle. This standard may also be purchased from a vendor. 7.8 Nitrate calibration standards -- Prepare a series of calibration standards by diluting the 1,000 mg/L nitrate standard.
NSR Strong Base Anion Macroporous Nitrate Selective Resin ~ Aldex NSR is a strong base anion exchange resin which is highly selective for nitrates over sulfates and other ions. Aldex NSR has a unique functional group that eliminates nitrate dumping even in the presence of high sulfates. Its resistance to nitrate dumping makes Aldex NSR superior in nitrate removal applications where sulfates are present compared to standard gellular or macroporous .
Brightwell Aquatics - NitratR ~ Basic Instructions and Guidelines: To initially lower excessive nitrate, each 500ml of NitratR will remove 20ppm nitrate in 100 US-gallons of water (or 10ppm per 200 US-gallons). When nitrate concentration remains unchanged or begins to increase, regenerate as described below.
Ion exchange resins and their applications / Water Tech Online ~ In situations with elevated sulfate concentrations, a selective SBA resin can be used as well. ClO 4 – SBA resins exist that selectively remove perchlorate (ClO 4-). These resins can be single-use and/or regenerable. Arsenic. In water, arsenic is related to arsenate, As(V) and arsenite, As(III).
United States Resin Company ~ tional group. In fact, it has higher affinity for monovalent anions (e.g., nitrate) than for di– or tri-valent anions. This is the opposite of the standard Type I and Type II anion resins such as US Resin’s A-S1 and A-S2. In many water treatment applications, A-S1 MN is less selective for sulfate than nitrate and nitrate dumping is eliminated.