Screening of silver nanoparticles containing carbonized yeast cells for adsorption of few long-lived active radionuclides
作者： R. Selvakumar , S. Aravindh , C. P. Kaushik , V. G. Katarani , Vidya S. Thorat
DOI: 10.1007/S10967-011-0997-Y
关键词: Scanning electron microscope 、 Energy-dispersive X-ray spectroscopy 、 Adsorption 、 Nuclear chemistry 、 Carbonization 、 Transmission electron microscopy 、 Analytical chemistry 、 Yeast 、 Silver nanoparticle 、 Chemistry 、 Partition coefficient
摘要: The present study involves the screening of silver nanoparticles containing carbonized yeast cells isolated from coconut cell sap for efficient adsorption few long lived radionuclides like 137Cs55, 60Co27, 106Ru44, 239Pu94 and 241Am95. Yeast produced through biological reduction were subjected to carbonization (400 °C 1 h) at atmospheric conditions their properties analyzed using fourier transform infra-red spectroscopy, X-ray diffraction, scanning electron microscope attached with energy dispersive spectroscopy transmission microscope. average size on surface (CSY) was 19 ± 9 nm. control without exposure (CCY) did not contain any particles its surface. efficiency CSY CCY towards radionuclide studied in batch mode fixed contact time, concentration, native pH. removal (76.75%) 106Ru44 (54.73%) whereas showed only 241Am95 (62.89%). Both adsorbents show retention respect 60Co27 137Cs55. Based experimental data, decontamination factor distribution coefficient (Kd) calculated and, values, it observed that these have greater potential adsorb radionuclides.
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