A new nano-silica/chitosan (SiO/CS) sorbent was created using a wet process to eliminate uranium(VI) from its solution. Measurements using BET, XRD, EDX, SEM, and FTIR were utilized to analyze the production of SiO/CS. The adsorption progressions were carried out by pH, SiO/CS dose, temperature, sorbing time, and U(VI) concentration measurements. The optimal condition for U(VI) sorption (165 mg/g) was found to be pH 3.5, 60 mg SiO/CS, for 50 min of sorbing time, and 200 mg/L U(VI). Both the second-order sorption kinetics and Langmuir adsorption model were observed to be obeyed by the ability of SiO/CS to eradicate U(VI). Thermodynamically, the sorption strategy was a spontaneous reaction and exothermic. According to the findings, SiO/CS had the potential to serve as an effectual sorbent for U(VI) displacement.
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http://dx.doi.org/10.3390/nano12213866 | DOI Listing |
Mol Pharm
January 2025
Engineering Research Center of Modern Preparation Technology of Traditional Chinese Medicine of Ministry of Education, Shanghai University of Traditional Chinese Medicine, No.1200, Cai-lun Road, Pudong District, Shanghai 201203, P. R. China.
Lactose is one of the most commonly used tablet diluents and fillers. However, the moisture sorption of lactose powder could exert detrimental effects on the excipient itself, as well as on the tablet quality. The effects of storage relative humidity (RH) conditions for different grades of lactose powders and tablets on compression behavior and tablet qualities were investigated.
View Article and Find Full Text PDFJ Chromatogr B Analyt Technol Biomed Life Sci
January 2025
Department of Chromatography, Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie Sklodowska University in Lublin, 20-031 Lublin, Poland. Electronic address:
Solid phase extraction (SPE) is one of the most popular methods of preparing plasma samples before determining the xenobiotics they contain. The present paper shows that the recovery degree of xenobiotics from plasma samples using SPE with C18 sorbent strongly depends on their storage time and temperature. While xenobiotics can be isolated and recovered in 100 % from fresh plasma samples under optimal conditions of the SPE procedure, their SPE recovery degree from stored plasma is lower.
View Article and Find Full Text PDFNucl Med Biol
November 2024
Joint Research Centre, European Commission, Karlsruhe, Germany.
Background: Targeted alpha therapy (TAT) is an effective option for cancer treatment. To maximize its efficacy and minimize side effects, carriers must deliver radionuclides to target tissues. Most of the nuclides used in TAT decay via the alpha cascade, producing several radioactive daughter nuclei with sufficient energy to escape from the original carrier.
View Article and Find Full Text PDFJ Environ Radioact
December 2024
School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing, 100083, China. Electronic address:
The presence of fractures in the surrounding rocks of a radioactive waste disposal repository is recognized as a potential pathway for radionuclides to enter the public domain. As is well known, radionuclides transported by groundwater exhibit increased mobility in fractures, with flow velocities significantly faster than those in the pore spaces of the surrounding rock matrix. The principal objective of this study is to investigate the mobility of Sr, Cs, U, and Pu in fractures and their fate in the groundwater environment.
View Article and Find Full Text PDFJ Hazard Mater
December 2024
Faculty of Science and Engineering, Southern Cross University, Lismore, NSW 2480, Australia. Electronic address:
Antimony(V) mobility in acid mine drainage (AMD) is often controlled by sorption and coprecipitation with schwertmannite - a poorly-ordered Fe(III) oxyhydroxysulfate mineral. However, due to its metastable nature, schwertmannite transforms over time to more thermodynamically stable Fe(III) phases, such as goethite. This study examines how transformation of Sb(V)-bearing schwertmannite to goethite impacts Sb(V) mobility, while also assessing the role that Sb(V) may play in stabilizing schwertmannite against such transformation.
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