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Your search keyword '"Anupam Banerjee"' showing total 2 results
Start Over Author "Anupam Banerjee" Journal applied radiation and isotopes
2 results on '"Anupam Banerjee"'

1. Separation of no-carrier-added 66,67Ga produced in heavy ion-induced cobalt target using alginate biopolymers

Author

Anupam Banerjee, Dalia Nayak, and Susanta Lahiri

Subjects
inorganic chemicals, Radiation, Calcium alginate, Period (periodic table), Alginates, Hexuronic Acids, Radiochemistry, chemistry.chemical_element, Gallium Radioisotopes, Germanium, Cobalt, Chemical Fractionation, Matrix (chemical analysis), chemistry.chemical_compound, Biopolymers, Glucuronic Acid, chemistry, Heavy Ions, Gallium, Arsenic, FOIL method, Nuclear chemistry
Abstract

Heavy ion activation of natural cobalt foil with 84 MeV 12 C results in the formation of no-carrier-added (nca) 66,67 As radionuclides, along with their corresponding decay products, 66,67 Ge and 66,67 Ga, in the matrix. Because arsenic and germanium radionuclides are short-lived, after a cooling period of 10 h only nca gallium radionuclides remain in the matrix. We attempted to separate the nca gallium radionuclides from the target matrix cobalt by biopolymeric calcium alginate (CA) and Fe-doped calcium alginate (Fe-CA) beads. A complete separation has been achieved by adsorbing 66,67 Ga and a lesser amount of bulk cobalt at pH 3 on Fe-CA beads, followed by desorbing cobalt from the beads with 0.4 M NaNO 2 .

Published
2007

2. Speciation-dependent studies on removal of arsenic by iron-doped calcium alginate beads

Author

Susanta Lahiri, Dalia Nayak, and Anupam Banerjee

Subjects
Radiation, Calcium alginate, Iron doped, media_common.quotation_subject, Arsenate, chemistry.chemical_element, engineering.material, Contaminated water, Speciation, chemistry.chemical_compound, chemistry, engineering, Biopolymer, Arsenic, media_common, Arsenite, Nuclear chemistry
Abstract

This work aims to study the differential attitude of Fe-doped calcium alginate (Fe-CA) beads towards As(III) and As(V) compounds so that speciation-dependent environmentally sustainable methodologies can be developed for removal of arsenic from contaminated water. Throughout the experiment, (76)As has been used as precursor of stable arsenic. The affinity of As(V) towards the Fe-CA beads is greater than that of As(III). Removal efficiency of Fe-CA beads for As(V) increases with increasing number of beads and longer shaking times. At pH 3, 30 Fe-CA beads remove As(V) completely from a solution containing 20mgkg(-1) As(V). The technique has been successfully applied to the ground water collected from an arsenic-contaminated area.

Published
2007

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