Influence of speciation during membrane treatment of uranium contaminated water

Hoyer, Michael; Zabelt, Denise; Steudtner, Robin; Brendler, Vinzenz; Haseneder, Roland; Repke, Jens‐Uwe

doi:10.1016/j.seppur.2014.05.044

Cited by 68 publications

(17 citation statements)

References 17 publications

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“…7). Uranium, on the contrary, shows a positive correlation between concentration and retention as observed in previous studies (Prabhakar et al, 1992;Hoyer et al, 2014). This correlation is expected to be dependent on uranium speciation and membrane pore size, as uranium retention is predominantly governed by size exclusion.…”

Section: Influence Of Water Chemistry: Concentration and Phsupporting

confidence: 73%

“…A change in fluoride species also affects hydration state and consequently hydrated radius, thus impacting retention when size exclusion is important (Richards et al, 2010). For uranium, the dominant species varies significantly with pH, but the retention is generally high and independent of speciation due to size exclusion (Hoyer et al, 2014).…”

Section: Influence Of Water Chemistry: Concentration and Phmentioning

confidence: 99%

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Removal of fluoride and uranium by nanofiltration and reverse osmosis: A review

2014

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Section: Influence Of Water Chemistry: Concentration and Phsupporting

confidence: 73%

Section: Influence Of Water Chemistry: Concentration and Phmentioning

confidence: 99%

Removal of fluoride and uranium by nanofiltration and reverse osmosis: A review

2014

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“…Due to its potential toxicological effects, it has been become necessary and urgent to remove chromium from drinking water. Many treatment techniques such as ion exchange, chemical precipitation, reverse osmosis, membrane separation, solvent extraction and filtration [10][11][12][13][14] have been suggested for removal and up take of dichromate from water. Adsorption is considered as an effective, economical and environmentally friendly method for removal of heavy metal ions from aqueous solutions and attracts significant attention in the treatment of water 15 .…”

mentioning

confidence: 99%

Novel synthesis of Ni/Fe layered double hydroxides using urea and glycerol and their enhanced adsorption behavior for Cr(VI) removal

El-Reesh

Farghali

Taha

et al. 2020

Sci Rep

127

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Novel modified Ni/Fe layered double hydroxides with different morphology of spherical-like shape were fabricated via using urea as a ligand and glycerol (Ni/Fe LDH/GL) with Ni:Fe molar ratios of 2:1 by the simplest co-precipitation method. Also, for comparison purposes, Ni/Fe LDH was synthesized to be used as a control one. A suggested interpretation for the morphology change was also given. The materials were characterized by X-ray diffraction (XRD), The Fourier transform infrared (FT-IR) spectroscopy, field emission scanning electron microscopy (FESEM), EDX for elemental analysis, high resolution transmission electron microscopy (HRTEM), Brunauer, Emmett, and Teller (BET) equation, particle size distributions and Zeta potential measurements. In addition, the synthesized materials were used as adsorbents for removal of potassium dichromate from aqueous solutions under various experimental conditions. The adsorption of Cr (VI) was strongly pH dependant and the pH PZC was studied. Kinetic studies were evaluated through different models including, pseudo first and second orders, mixed 1, 2 orders, intra particle diffusion and Avrami models. For adsorption isotherms, twoparameter models (Langmuir, Freundlich and Temkin) and three parameter models (Sips, Langmuir-Freundlich and Tooth) were investigated showing maximum adsorption capacity of 50.43 mg/g and 136.05 mg/g for Ni/Fe LDH and Ni/Fe LDH/GL, respectively. Also, the effect of temperature was investigated at (23, 35, 45, 55 °C) and the thermodynamic parameters (∆H°, ∆S° and ∆G°) were calculated showing exothermic and spontaneous adsorption process. The effect of coexisting anions (cl − , So 4 2− and HPO 4 2−) and humic acid at different concentrations on the removal efficiency of dichromate ions was investigated. Chemical stability and recyclability of these adsorbents were also studied. The intermolecular hydrogen bonds formation between dichromate ion, urea, glycerol, LDH was explored by Monte Carlo simulation This study suggested that the modified Ni/Fe LDH/GL materials were promising nanoadsorbents for efficient potassium dichromate removal. Water is the most precious natural source important for human beings, agriculture, and industrial activities. Recently, water bodies are potentially contaminated and polluted by many hazardous materials such as nuclear and industrial wastes, pharmaceuticals, organic contaminants and heavy metals. Heavy metals like cadmium, zinc, copper, lead, arsenic, mercury and chromium have significant threat to human health due to its potentially toxic effects 1,2. Chromium is one of heavy metals widely used in many industrial processes such as electroplating, dyes, mining, photography, textile and leather 3. Chromium present in water in a trivalent and hexavalent oxidation state, it is established that hexavalent chromium exhibits high toxicity toward living organisms than trivalent chromium which in contrast is a micronutrient 4. Hexavalent chromium is reported as a cause of respiratory cancers 5,6 and mutations and chromosomal dam...

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“…The Institute of Thermal, Environmental and Natural Products Process Engineering conducts research on the separation and concentration of valuable elements from a multi‐component solution . The researchers use polymer‐based nanoiltration membranes with MWCO smaller than 300 Da.…”

Section: Case Studiesmentioning

confidence: 99%

Resource Recovery from Low‐Grade Ore Deposits and Mining Residuals by Biohydrometallurgy and Membrane Technology. Potentials and Case Studies

et al. 2017

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The recovery of strategic elements from secondary mineral sources and low‐grade ores is of increasing relevance due to a changing global market as well as for reasons of sustainability. The present article shows the potential of biohydrometallurgy as an effective technology for mobilization of metals from secondary sources. Furthermore, the application of membrane separation as a successful technique to recover metals from bioleaching solutions is presented. These issues are discussed within the scope of recent research projects.

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Influence of speciation during membrane treatment of uranium contaminated water

Cited by 68 publications

References 17 publications

Removal of fluoride and uranium by nanofiltration and reverse osmosis: A review

Removal of fluoride and uranium by nanofiltration and reverse osmosis: A review

Novel synthesis of Ni/Fe layered double hydroxides using urea and glycerol and their enhanced adsorption behavior for Cr(VI) removal

Resource Recovery from Low‐Grade Ore Deposits and Mining Residuals by Biohydrometallurgy and Membrane Technology. Potentials and Case Studies

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