STUDY OF CESIUM AND STRODIUM UPTAKE BY ELECTRON AND GAMMA IRRADIATED CLINOPTILOLITE


Δ. Μωραίτης
Γ. Χρηστίδης
Y. Keheyan
L. Akhalbedashvili
N. Kekelidze
R. Gerokyan
H. Yeritsyan
H. Sargsyan
Résumé

Clinoptilolite is widely known for their uses especially in environmental applications. They have been utilized.in nuclear wastewater treatment and in land restoration. Irradiation emitted by nuclear liquid waste includes α, β and γ radiation. Irradiated clinoptilolite may exhibit crystal changes which affect the sorption of Cs+ and Sr2*. Sorption experiments with Cs+ and Sr2* were carried out separately. Solutions containing various concentrations of each element were brought in contact with untreated or irradiated (electron irradiation 1014 1015 e/cm2 and y-irradiation 70 Mrad) Armenian clinoptilolite. Additional experiments were carried out with solutions containing both Sr and Cs in varying proportions (75/25%, 50/50%, 25/75%) and concentrations (0.5 χ CEC and 2x CEC). The later types of experiments were contacted with untreated and irradiated Armenian clinoptilolite (yirradiation 70 Mrad, electron irradiation 1014 e/cm2). In solutions containing one ion (either Sr21 or Cs+), there is a slight increase of Cs+ uptake in the highest loadings of Cs (2x CEC, 1x CEC) for the γ-irradiated material. Electron Irradiation (1015 e/cm2) has not affected the sorption of Cs+. Clinoptilolite treated with y-irradiation exhibits decrease in Sr2* uptake and, equilibrium is attained at a significantly greater reaction time, especially when compared to Cs+. In binary solutions (Sr^-Cs*), clinoptilolite absorbs larger amounts of Cs+ compare to Sr2* and Cs+ uptake is instant compare to Sr2* where a delay is observed. There is a decrease in Sr2* sorption and an apparent delay in attaining equilibrium after y-irradiation. The same effects have been observed in the sorption of Sr2* after electron irradiation. Cs+ uptake has not been affected after clinoptilolite treatment with electron irradiation and y-irradiation.

Article Details
  • Rubrique
  • Environmental Geology
Téléchargements
Les données relatives au téléchargement ne sont pas encore disponibles.
Références
Ames L.L, 1960, The cation sieve properties of clinoptilolite, American Mineralogy 45, 689-700.
Allietti, Α., Gottardi, G., Poppi, L, 1974, The heat behaviour of the cation exchanged zeolites with heulandite structure,. Tsch. Min. Pet. Mitt., 21, 291-298.
Alberti Α., 1975, The crystal structure of two clinoptilolites, Tsch. Min. Pet. Mitt., 22, 25-37.
Banfield J.F. and Barker W.W., 1998, Low-temperature alteration in tuffs from Yucca Mountain, Nevada, Clays and Clay Minerals, 46, 27-37.
Bish D., 1990, Long-term thermal stability of clinoptilolite: The development of a "B" phase, European Journal of Mineralogy, 2, 771-777.
Bish D., 1993, Thermal behavior of natural zeolites, In: Ming D.W., Mumpton F.A (Eds), Zeolites'93, New York, Int. Comm. Natural Zeolites 259-269pp.
Bish D. L and Carey J.W., 2001, Thermal Behavior of Natural Zeolites, In: Bish D., Ming D.W. (Eds) Natural zeolites: properties applications and uses. Reviews in Mineralogy and Geochemistry, vol. 45, MSA Washington, 403pp.
Boles, J.R., 1972, Composition, optical properties, cell dimensions and thermal stability of some heulandite group zeolites, Am.Mineral. 57,1463-1493.
Christidis G.E, Moraetis D., Keheyan E., Akhalbedashvili L, Kekelidze N., Gevorkyan R., Yeritsyan H., Sargsyan H., 2003, Chemical and thermal modification of natural HEU-type zeolitic materials from Armenia, Georgia and Greece, Applied Clay Science 24, 79-91
Chipera S.J., Bish D.L., 1997, Equilibrium modeling of clinoptilolite-analcime equilibria at Yucca Mountain, Nevada, USA, Clays and Clay Minerals, 45, 226-239.
Faghihian H., Ghannadi M., Marageh Kazemian H., 1999, The use of clinoptilolite and its sodium form for removal of radioactive cesium and strodium from nuclear wastewater and Pb2+, Ni2+, Cd2+, Ba2+ from municipal wastewater, Applied radiation and isotopes 50, p. 655-660
Filipidis A. and Kassoli-Fournaraki Α., 2000, Environmental uses of natural zeolites from Evros district, Thrace, Greece, 5th Int. Conf. On Environmental Pollution, Thessaloniki Proc. 149-155.
Hagiwara Z, and Uchida M., 1978, Ion-exchange reactions of processed zeolite and its applications to the removal of ammonia-nitrogen in wastes . In: Sand, LB., Mumpton, FA. (Eds.), Natural zeolites: Occurrence Properties and Use, New York, Pergamon Oxford, 463-470pp.
Inglezakis V.J. Zorpas A.A., Loizidou D., Grigoropoulou HP. 2003, Simultaneous removal of metals Cu2+, Fe3 and Cr3+ with anions SO2" and HP04 2" using clinoptilolite, Microporous and Mesoporous Materials, 61, 167-171.
Inglezakis V.J., Grigoropoulou HP., 2003, Modeling of ion exchange of Pb2+ in fixed beds of clinoptilolite, Microporous and Mesoporous Materials, 61, 273-282
Kantiranis N., Filippidis Α., Mouhtaris Th., Charistos D., Kassoli-Fournaraki Α., Tsirambidis Α., 2002, The uptake ability of the Greek natural zeolites. Zeolite'02, 6th Int. Conf. Natural Zeolites, Thessaloniki Jun. 02 Ext. Abs., 155-156
Komarneni S., Palau G.L, Pillay K.K.S., 1983 Radiation effects on a zeolite ion exchanger and a pollucite, Nuclear and Chemical Waste Management, 4, 335-338
Koyama K. and Takeuchi Y., 1977, Clinoptilolite: the distribution of potassium atoms and its role in thermal stability. Z. Kristallogr. 145, 216-239.
Loizidou M., 1982, Ion Exchange of Lead and Cadmium with the Sodium and Ammonium forms of Some Natural Zeolites, Phd Thesis, City University, London, Great Britain.
Mercer, B.W., and Ames, LL., 1978, Zeolite ion exchange in radioactive and municipal wastewater treatment. In: Sand, L.B., Mumpton, FA. (Eds.), Natural Zeolites: Occurrence, Properties, Use. Pergamon.Oxford, 451- 462pp.
Misaelides P., Godelitsas Α., Filippidis Α., 1995, The use of zeoliferous rocks from Metaxades-Thrace, Greece, for the removal of caesium from aqueous solutions, Fresenius Environmental Bulletin, 4, 227-231
Misaelides P.and Godelitsas Α., 1995, Removal of heavy metals from aqueous solutions using pretreated natural zeolitic materials, The case of Mercury (II). Toxicological and Environmental Chemistry, 51, 21-29
Misaelides P., Godelitsas Α., Filippidis Α., Charistos D., Anousis I., 1995, Thorium and uranium uptake by natural zeolitic materials. The Science of the Total Environment 173/Ί7'4, 237-246
Misaelides P., Godelitsas Α., Charistos V., loannou D., Charistos D., 1994, Heavy metal uptake by zeoliferous rocks from Metaxades, Thrace, Greece: An exploratory study. Journal of Radioanalytical and Nuclear Chemistry, Articles 183, 159-166
Mumpton F. Α., 1981, Utilization of natural zeolites, Reviews in Mineralogy, 4, 177-204.
Mumpton F. Α., 1960, Clinoptilolite redefined, The American Mineralogist, 45, 351-369.
Nightingale E.R., 1959, Phenomenological theory of ion solvation. Effective radii of hydrated ions, Journal of Physical Chemistry, 63,1381-1387
Nilchi Α., Khanchi Α., Ghanadi Maragheh M., Bagheri Α., 2003, Investigation of the resistance of some naturally occurring and synthetic inorganic ion exchangers against gamma radiation, Radiation Physics and Chemistry 66 167-177.
Pabalan T. and Bertetti F.P., 2001, Cation-Exchange Properties of Natural Zeolites, In: Bish D., Ming D.W. (Eds) Natural zeolites: properties applications and uses. Reviews in Mineralogy and Geochemistry, vol. 45, MSA Washington, 475pp.
Pansini M., Collela C, Caputo D., Gennaro M., Langella Α., 1996, Evaluation of phillipsite as cation exchanger in lead removal from water, Microporous Materials 5, 357-364
Petrosov I. Kh., and Sadoyan Α. Α., 1998, New Zeolite Deposits Spread in Armenia. Proceedings of Armenian National Academy, Earth Seiendes, II, 3, 39 (in Russian).
Rajec P., Macasek F., Feder M., Misaelides P., Samajova E., 1998, Sorption of caesium and strodium on clinoptilolite- and mordenite-containing sedimentary rocks, Journal of Radioanalytical and Nuclear Chemistry, 229 (1-2), 49-55
Semmens M. J. and Seyfarth M 1978, The selectivity of clinoptilolite for certain heavy metals. In: Sand, L.B., Mumpton, F.A. (Eds), Natural zeolites: Occurrence Properties and Use, New York, Pergamon Oxford, 517-526pp.
Sikalidis, C.A., 1998, Heavy metals and toxic elements removal from contaminated waters by clay minerals and zeolite bearing rocks, Fourth Int. Conf. on Environmental Pollution Thessaloniki Proc, 102-110
Symeopoulos B., Soupioni M., Misaelides P., Godelitsas Α., Barbayiannis N., 1996, Neodymium sorption by clay minerals and zeoliferous rocks, Journal of Radioanalytical and Nuclear Chemistry Letters, 212,421-429
Valcke, E., Engels, Β., Cremers, Α., 1997, The use of zeolites as amendments in radiocaesium- and radiostrontium-contaminated soils: A soil-chemical approach. Part I: Cs-K exchange in clinoptilolite and mordenite. Zeolites, 18, 205-211.
Valcke E., Engels Β. Cremers Α. 1997, The use of zeolites as amendments in radiocaesium and radiostrontium contaminated soils: A soil chemical approach. Part II: Sr-Ca exchange in clinoptilolite and mordenite and Zeolite A, Zeolites, 18, 212-217.
Vaniman D.T., Chipera S.J., Bish D.J., Carey J.W., Levy S.S., 2001, Quantification of unsaturated-zone alteration and cation exchange in zeolitized tuffs at Yucca Mountain, Nevada, USA, Geochimica et Cosmochimica Acta, 65, 3409-3433.
Articles les plus lus par le même auteur ou la même autrice