The removal of heavy metal ions from wastewater by ion exchange resins ( zeolite and purolite C105), was investigated. adsorption process, which is pH dependent, shows maximum at 6 7 for C105 initial concentrations 50-250 mg/l, with resin dose 0.25-3 g. capacity found to be 9.74, 9.23 9.71 mg/g Cu2+, Pb2+, Ni2+ on respectively, while the 9.64 ,8.73 9.39 respectively. 97-98% Cu2+ 92- 93% Pb2+ ze...

The simultaneous etherification of isobutene and isoamylenes with ethanol has been studied using macroreticular acid ion-exchange resins as catalyst. Most of the experiments were carried out over Amberlyst-35. In addition, Amberlyst-15 and Purolite CT-275 were also tested. Chemical equilibrium of four chemical reactions was studied: ethyl tert-butyl ether formation, tert-amyl ethyl ether format...

Ion exchange is widely used for the recovery and removal of metals from process and waste streams in chemical process industries. The Na-form of strong-acid Purolite NRW-100 resin was used to recover Ni(II) from a simulated electroplating waste solution containing NiSO4, NH4Cl, NaH2PO4, and citrate. A set of mass balance equations that take into account possible aqueous complexation reactions w...

Inamuddin, A. Mohammad (eds.), Green Chromatographic Techniques, DOI 10.1007/978-94-007-7735-4_2, © Springer Science+Business Media Dordrecht 2014 V. Davankov () · M. Tsyurupa · Z. Blinnikova Nesmeyanov-Institute of Organo-Element Compounds, Russian Academy of Sciences, 119991 Moscow, Russia e-mail: [email protected] Abstract The review considers a new preparative method of separating concent...

Ammonium is one of the main factors responsible for eutrophication water bodies. Purolite SSTC60 ion exchange resin was used to investigate its potential use on ammonium removal efficiency. The effects important parameters affecting such as dosage, initial solution pH, temperature, mixing speed and concentration were investigated. highest achieved at pH 7. It determined that rates increased wit...

This paper discusses the scientific rationale for methods of platinum metals sorption centralization from saturated solutions with a high content macrocomponents. Methods and iridium using local anionites such as AH-31, AB-17-8, Purolite S985 are described. The sorbents used were conditioned to remove organic mineral impurities. isotherms group 1/EC=f(1/Cp) at temperature 20 °C duration 24 h pl...

This paper concerns with the behavior of an electrodeionization (EDI) system for concentration of citric acid from fermentation broth. Commercially cation-exchange membrane (MC-3470) and anion-exchange membrane (MA-3475) were used as ionic selective barriers of the EDI stack. The diluted compartments of the EDI stack were filled with mixed ion-exchange resins (purolite strong acid cation-exchan...

This paper reports the results of intermatrix synthesis (IMS) of silver metal nanoparticles (Ag-MNPs) in Purolite C100E sulfonic ion exchange polymer of the gel-type structure. It has been shown that the surface morphology of the initial MNP-free polymer is absolutely smooth, but it dramatically changes after the kinetic loading of Ag on the polymer and then IMS of Ag-MNPs. These morphological ...

Phosphogypsum waste is a potential, secondary rare earth element (REE) source that available in very large volumes. Extraction and purification of REE from this complex was studied using resin-in-leach (RIL) followed by batch elution. Multiple consecutive RIL cycles with Purolite S940 resin dilute H2SO4 solution were performed for an industrial phosphogypsum waste. loading (max. 0.92 equiv./kg)...

The removal of nitrogen from wastewaters is great importance due to the harmful effects in environment. In this study, nitrate two underground mine waters was investigated by strong anion exchange resins (Lewatit MonoPlus SR 7 (referred as SR7, macroporous), Purolite A520E (A520E, A300E (A300E, gel)) continuous-flow columns. Both had similar concentrations (NO3-N: Mine A 32 mg/l and B 37 mg/l) ...