Extraction of uranium(VI) from sulfate leach liquor after iron removal using manganese oxide coated zeolite

Nouh, El Said A.; Amin, Mostafa Ibrahim; Gouda, Mohammed; Abdel‐Magid, Ahmed F.

doi:10.1016/j.jece.2015.01.013

Cited by 16 publications

(6 citation statements)

References 21 publications

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“…Uranium is a radioactive metal that is found in a variety of rocks, soils and aqueous sources. It is released into environment naturally or as contaminant through mining processing, fuel manufactures and other related industrial activities [1,2]. In some contaminated regions waste disposal sites can attain as high as several tens of mg/L which eventually may found their way into soil, drinking water and human beings [3].…”

Section: Introductionmentioning

confidence: 99%

CeO2–TiFe2O4 nanocomposite for effective removal of uranium ions from aqueous waste solutions

et al. 2019

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The present work deals with the preparation of Cerium oxide Titanium Ferrite (CTF) nanocomposite using a simple solvothermal method. The synthesized CTF nanocomposites were characterized using FT-IR, XRD, BET surface area, VSM and TEM. The adsorption action of CTF nanocomposite towards U(VI) was optimized using batch experiments by varying solution pH, initial concentration, sorbent dosage and rate of adsorption. The loaded uranium was efficiently desorbed using 0.1 M HNO 3. The Kinetic studies indicated that the adsorption process follows pseudo-second-order equation. Freundlich and Halsey adsorption isotherm was modeled, it proves the multilayers adsorption process. The calculated thermodynamic parameters show that the adsorption process of U(VI) onto CTF nanocomposite was spontaneous and endothermic in nature. The fabricated nanocomposite was applied successfully for removal of uranium species from waste solutions. The obtained results indicated that CTF nanocomposite was a promising and excellent adsorbent for uranium ions removal in comparison with other reported ones. Moreover, the process was very simple, fast and easily reusable several times.

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Section: Introductionmentioning

confidence: 99%

CeO2–TiFe2O4 nanocomposite for effective removal of uranium ions from aqueous waste solutions

et al. 2019

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“…At pH 6, the attained Mn 2+ uptake was as high as 1.1 meq Mn 2+ g −1 at equilibrium. Nouh et al (2015) reported 62% efficiency on the iron adsorption by MOCZ in all studied pH range (0.3-3), and they noted precipitate formed above pH 3, so the efficiency of iron adsorption could not be detected. In three runs, the removal of 93% of the iron content was reached.…”

Section: Sorption Properties Of Zinc Sulfide Particles Doped With Cop...mentioning

confidence: 94%

Synthetic Sorbent Materials Based on Metal Sulphides and Oxides

Софронов¹,

Беликов²,

Rucki³

et al. 2020

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The Open Access version of this book, available at www.taylorfrancis.com, has been made available under a Creative Commons Attribution-Non Commercial-No Derivatives 4.0 license.With the exception of the Introduction, Chapter 1.1, Final Remarks, and References no part of this book may be reprinted or reproduced or utilised in any form or by any electronic, mechanical, or other means, now known or hereafter invented, including photocopying and recording, or in any information storage or retrieval system, without permission in writing from the publishers.The Introduction, Chapter 1.1, Final Remarks, and References of this book are available for free in PDF format as Open Access from the individual product page at www.routledge.com. It has been made available under a Creative Commons Attribution-Non Commercial-No Derivatives 4.0 license.

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“…The preparation stage was carried out by modifying the previous research [6][7][8] . The steps taken were to take 100 grams of fly ash and then wash it with distilled water.…”

Section: Preparation and Activation Of Fly Ashmentioning

confidence: 99%

“…One method that can be used to modify zeolite is by coating metal oxide on the zeolite to increase the efficiency of metal removal by the zeolite. 8 The metal oxide coating chosen to modify the zeolite in this research is manganese oxide coating or manganeseoxide-coated-zeolite (MOCZ).…”

Section: Introductionmentioning

confidence: 99%

Modification of Coal Fly Ash Waste into Manganese-Oxide-Coated-Zeolite (MOCZ) to Adsorb Heavy Metal Ions Ni2+

Saputro,

Mahardiani,

Susilowati

et al. 2024

Valensi

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High consumption of coal as a source of electrical energy in Indonesia has resulted in piles of waste from coal burning, namely fly ash, which can damage the environment and harm health. Fly ash contains main oxides, namely silica (SiO2) and alumina (Al2O3), whose components are similar to zeolite, so they can be synthesized into zeolite-like material (ZLM) which can be used as an adsorbent for heavy metal Ni2+. Therefore, this research discussed the characterization of manganese-oxide-coated-zeolite (MOCZ) from fly ash waste as a heavy metal adsorbent. The research procedure consisted of preparation, purification, and activation stage of fly ash to obtain fly ash that is free from impurities, the stage of making sodium silicate and sodium aluminate, and zeolite synthesis. The resulting zeolite was then coated with manganese oxide to expand the surface area of the zeolite and increase the ability of zeolite to adsorb heavy metal Ni2+. The research results showed that fly ash waste that was coated with manganese oxide can adsorb heavy metal Ni2+. The adsorption of the Ni2+ metal ion solution by zeolite with MOCZ modification is in line with the pseudo-second-order kinetic and Langmuir isotherm.

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Extraction of uranium(VI) from sulfate leach liquor after iron removal using manganese oxide coated zeolite

Cited by 16 publications

References 21 publications

CeO2–TiFe2O4 nanocomposite for effective removal of uranium ions from aqueous waste solutions

CeO2–TiFe2O4 nanocomposite for effective removal of uranium ions from aqueous waste solutions

Synthetic Sorbent Materials Based on Metal Sulphides and Oxides

Modification of Coal Fly Ash Waste into Manganese-Oxide-Coated-Zeolite (MOCZ) to Adsorb Heavy Metal Ions Ni2+

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