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Title: Treatment of radioactive liquid waste containing caesium by indigenously available synthetic zeolites: A comparative study

Abstract

Indigenously available, commercial samples of synthetic zeolites 13X, AR-1, 4A and ZSM-5, have been characterized and evaluated for their performance towards the removal of caesium from pure CsCl solutions spiked with radioactive {sup 137}Cs. The kinetic data were used to calculate the ``diffusional time frequency``, B. The observed linearity of the Bt-t plots in the case of uptake of Cs by zeolite 13X, indicated that at higher Cs concentrations and under stirred conditions, the uptake was controlled by ``intra-particle diffusion``. D{sub d} values were found to be of the order of 10{sup 3}--10{sup 1} ml g{sup {minus}1}, depending on the initial concentration of Cs ions, and followed the order 13X > 4A > AR-1 > ZSM-5. Equilibrium studies were carried to under stirred conditions, using various zeolites and isonormal solutions of Cs + Na, at a constant total ionic concentration of 0.1 N. The adsorption isotherms indicated a high selectivity of the zeolite AR-1 for Cs, which was further confirmed by drawing Kielland-type plots. In column trials, actual radioactive waste solutions received from the Madras Atomic Power Station (MAPS), Kalpakkam, were treated with these zeolites. Two waste streams, containing predominantly {sup 137}Cs and varying in dissolved solids content, were passedmore » through 1 g (bed volume 1.5 ml) beds of 13X, AR-1 and 4A. The breakthrough curves indicated that AR-1 was the best zeolite for effluent that contained low dissolved solids, while non of the zeolites was found to be promising for the treatment of waste streams with high dissolved solids.« less

Authors:
; ;  [1];  [2]
  1. Bhabha Atomic Research Centre, Kalpakkam (India). Centralised Waste Management Facility
  2. Anna Univ, Madras (India). Dept. of Chemical Engineering
Publication Date:
OSTI Identifier:
118652
Resource Type:
Journal Article
Journal Name:
Waste Management
Additional Journal Information:
Journal Volume: 15; Journal Issue: 2; Other Information: PBD: 1995
Country of Publication:
United States
Language:
English
Subject:
05 NUCLEAR FUELS; 36 MATERIALS SCIENCE; ZEOLITES; SORPTIVE PROPERTIES; CESIUM 137; RADIOACTIVE WASTE PROCESSING; MATHEMATICAL MODELS; TECHNOLOGY ASSESSMENT; ION EXCHANGE; COMPARATIVE EVALUATIONS

Citation Formats

Sinha, P K, Panicker, P K, Amalraj, R V, and Krishnasamy, V. Treatment of radioactive liquid waste containing caesium by indigenously available synthetic zeolites: A comparative study. United States: N. p., 1995. Web. doi:10.1016/0956-053X(95)00014-Q.
Sinha, P K, Panicker, P K, Amalraj, R V, & Krishnasamy, V. Treatment of radioactive liquid waste containing caesium by indigenously available synthetic zeolites: A comparative study. United States. https://doi.org/10.1016/0956-053X(95)00014-Q
Sinha, P K, Panicker, P K, Amalraj, R V, and Krishnasamy, V. Wed . "Treatment of radioactive liquid waste containing caesium by indigenously available synthetic zeolites: A comparative study". United States. https://doi.org/10.1016/0956-053X(95)00014-Q.
@article{osti_118652,
title = {Treatment of radioactive liquid waste containing caesium by indigenously available synthetic zeolites: A comparative study},
author = {Sinha, P K and Panicker, P K and Amalraj, R V and Krishnasamy, V},
abstractNote = {Indigenously available, commercial samples of synthetic zeolites 13X, AR-1, 4A and ZSM-5, have been characterized and evaluated for their performance towards the removal of caesium from pure CsCl solutions spiked with radioactive {sup 137}Cs. The kinetic data were used to calculate the ``diffusional time frequency``, B. The observed linearity of the Bt-t plots in the case of uptake of Cs by zeolite 13X, indicated that at higher Cs concentrations and under stirred conditions, the uptake was controlled by ``intra-particle diffusion``. D{sub d} values were found to be of the order of 10{sup 3}--10{sup 1} ml g{sup {minus}1}, depending on the initial concentration of Cs ions, and followed the order 13X > 4A > AR-1 > ZSM-5. Equilibrium studies were carried to under stirred conditions, using various zeolites and isonormal solutions of Cs + Na, at a constant total ionic concentration of 0.1 N. The adsorption isotherms indicated a high selectivity of the zeolite AR-1 for Cs, which was further confirmed by drawing Kielland-type plots. In column trials, actual radioactive waste solutions received from the Madras Atomic Power Station (MAPS), Kalpakkam, were treated with these zeolites. Two waste streams, containing predominantly {sup 137}Cs and varying in dissolved solids content, were passed through 1 g (bed volume 1.5 ml) beds of 13X, AR-1 and 4A. The breakthrough curves indicated that AR-1 was the best zeolite for effluent that contained low dissolved solids, while non of the zeolites was found to be promising for the treatment of waste streams with high dissolved solids.},
doi = {10.1016/0956-053X(95)00014-Q},
url = {https://www.osti.gov/biblio/118652}, journal = {Waste Management},
number = 2,
volume = 15,
place = {United States},
year = {1995},
month = {11}
}