Sustainable Remedy Waste to Generate SiO 2 Functionalized on Graphene Oxide for Removal of U(VI) Ions

Mohamed A. Hassanin, Sameh H. Negm, Mohamed A. Youssef, Ahmed K. Sakr, Hamed I. Mira, Tarek F. Mohammaden, Jamelah S. Al-Otaibi, Mohamed Y. Hanfi, M. I. Sayyed and Mohamed F. Cheira
Additional contact information
Mohamed A. Hassanin: Nuclear Materials Authority, El Maadi, Cairo P.O. Box 530, Egypt
Sameh H. Negm: Nuclear Materials Authority, El Maadi, Cairo P.O. Box 530, Egypt
Mohamed A. Youssef: Nuclear Materials Authority, El Maadi, Cairo P.O. Box 530, Egypt
Ahmed K. Sakr: Nuclear Materials Authority, El Maadi, Cairo P.O. Box 530, Egypt
Hamed I. Mira: Nuclear Materials Authority, El Maadi, Cairo P.O. Box 530, Egypt
Tarek F. Mohammaden: Nuclear Materials Authority, El Maadi, Cairo P.O. Box 530, Egypt
Jamelah S. Al-Otaibi: Department of Chemistry, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
Mohamed Y. Hanfi: Nuclear Materials Authority, El Maadi, Cairo P.O. Box 530, Egypt
M. I. Sayyed: Department of Nuclear Medicine Research, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University (IAU), P.O. Box 1982, Dammam 31441, Saudi Arabia
Mohamed F. Cheira: Nuclear Materials Authority, El Maadi, Cairo P.O. Box 530, Egypt

Sustainability, 2022, vol. 14, issue 5, 1-20

Abstract: The Hummer process is applied to generate graphene oxide from carbon stocks’ discharged Zn-C batteries waste. SiO 2 is produced from rice husks through the wet process. Subsequently, SiO 2 reacted with graphene oxide to form silica/graphene oxide (SiO 2 /GO) as a sorbent material. XRD, BET, SEM, EDX, and FTIR were employed to characterize SiO 2 /GO. Factors affecting U(VI) sorption on SiO 2 /GO, including pH, sorption time, a dosage of SiO 2 /GO, U(VI) ions’ concentration, and temperature, were considered. The experimental data consequences indicated that the uptake capacity of SiO 2 /GO towards U(VI) is 145.0 mg/g at a pH value of 4.0. The kinetic calculations match the pseudo second-order model quite well. Moreover, the sorption isotherm is consistent with the Langmuir model. The sorption procedures occur spontaneously and randomly, as well as exothermically. Moreover, SiO 2 /GO has essentially regenerated with a 0.8 M H 2 SO 4 and 1:50 S:L phase ratio after 60 min of agitation time. Lastly, the sorption and elution were employed in seven cycles to check the persistent usage of SiO 2 /GO.

Keywords: uranium; silica; rice husk; graphene oxide; sorption; desorption (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
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