Innovative synthesis of modified cellulose derivative as a uranium adsorbent from carbonate solutions of radioactive dep
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ORIGINAL RESEARCH
Innovative synthesis of modified cellulose derivative as a uranium adsorbent from carbonate solutions of radioactive deposits Sawsan Dacrory . El Sayed A. Haggag . Ahmed M. Masoud . Shaimaa M. Abdo . Ahmed A. Eliwa . Samir Kamel
Received: 11 February 2020 / Accepted: 29 May 2020 Ó Springer Nature B.V. 2020
Abstract This work was an attempt to prepare a new eco-friendly adsorbent for the recovery of uranium from the Egyptian radioactive deposits. So, cellulose/ p-toluidine was prepared as a potential sorbent for uranium (VI) in highly alkaline solutions, from a condensation reaction of p-toluene with dialdehyde cellulose which resulting from periodate selective oxidative of cellulose. We have studied the kinetics, isotherm models, and thermodynamic of uranium adsorption from aqueous solutions by dissolved the deposits uranium in sodium carbonate aqueous solution. The effect of adsorption time, and temperature, pH, as well as uranium concentration on adsorption capacity were investigated. The adsorption capacity of uranium by cellulose p-toluidine has been found to attain 80 mg/g. Scanning electron microscopy, X-ray diffractometer, and Fourier transform infrared spectroscopy were used to study the morphological
characterization, and chemical structure of the prepared adsorbent. In addition, the computational calculation of dialdehyde cellulose, p-toluidine, and cellulose/p-toluidine by DFT/B3LYP/6-31G (d) basis sets was studied. The adsorption of uranium using cellulose p-toluidine followed fitted with pseudosecond-order reaction as well as Langmuir isotherm. Also, the prepared adsorbent displayed excellent antimicrobial activity against Staphylococcus aureus, Pseudomonas aeruginosa, Bacillus subtilis, E. coli and Candida albicans. Keywords Cellulose p-toluidine Uranium adsorption Radioactive deposits Isotherm models Adsorption kinetics
Introduction Electronic supplementary material The online version of this article (https://doi.org/10.1007/s10570-020-03272-w) contains supplementary material, which is available to authorized users. S. Dacrory S. Kamel (&) Cellulose and Paper Department, National Research Centre, Cairo 12622, Egypt e-mail: [email protected] E. S. A. Haggag A. M. Masoud S. M. Abdo A. A. Eliwa Nuclear Materials Authority, P.O. Box 530, Maadi-Kattameya, Cairo, Egypt
Uranium has a great importance in nuclear power, and it uses as a fuel for electricity generation. In the soil and rock it is usually found in the hexavalent form with an average concentration of about 3 mg kg-1 (FavreRe´guillon et al. 2008; Wang et al. 2009). Despite the importance of the uranium element, it is considered as one of the most polluting elements environmentally due to its radioactive effect. Uranium and its compounds are inevitably released into the water sources through activities of the nuclear industry, minerals
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mining (Deng et al. 2010; Sprynskyy et al. 2011). The remaining of uranium after coal combustion and using phosp
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