THE USE OF FLY ASH AND ZEOLITE MIXTURE AS BACKFILL MATERIAL IN THE RADIOACTIVE WASTE REPOSITORY

Herry Poernomo; Noor Anis Kundari; Burhani J W

doi:10.22146/ijc.21808

THE USE OF FLY ASH AND ZEOLITE MIXTURE AS BACKFILL MATERIAL IN THE RADIOACTIVE WASTE REPOSITORY

https://doi.org/10.22146/ijc.21808

Herry Poernomo^(1*), Noor Anis Kundari⁽²⁾, Burhani J W⁽³⁾

(1) Centre for Research and Development of Advanced Technology National Nuclear Energy Agency, Babarsari Street P.O. Box 6101 Ykbb Yogyakarta 55281
(2) Polytechnic Institute of Nuclear Technology National Nuclear Energy Agency, Babarsari Street P.O. Box 6101 Ykbb Yogyakarta 55281
(3) Polytechnic Institute of Nuclear Technology National Nuclear Energy Agency, Babarsari Street P.O. Box 6101 Ykbb Yogyakarta 55281
(*) Corresponding Author

Abstract

An investigation of the contribution of fly ash in the fly ash-zeolite mixture as the backfill material on the shallow land burial of radioactive waste has been done. The experiment objective is to know the effect of zeolite particle size and fly ash-zeolite weight ratio on physical properties such as permeability (K) and dispersion characteristic such as effective dispersion coefficient (D_e) in the fly ash-zeolite form as backfill material. The experiment was carried out by the fixed bed method in the column filled by the fly ash-zeolite mixture with a fly ash-to-zeolite weight percent ratio of 100/0, 80/20, 60/40, 40/60, 20/80, 0/100 in the water saturated condition flown by uranyl nitrate solution at concentration (C_o) of 500 ppm. The concentration of uranium in the effluents in interval 15 minutes represented as C_t was analyzed by spectrophotometer, then using C_o and C_t, data effective dispersion coefficient (D_e) in the backfill material were determined. The experiment data showed that -400 mesh fly ash and -70+80 mesh zeolite on fly ash-to-zeolite with weight percent ratio of 40/60 with K = 5.00x10^-5cm/second and D_e = 1.11.10^-5 cm²/second can be used as backfill material.

Keywords

backfill material; fly ash; radioactive waste; zeolite

Full Text:

Full Text PDF

References

[1] Dixon, D.F., 1985, A Program for Evolution from Storage to Disposal of Radioactive Waste at Chalk River Nuclear Laboratories, Atomic Energy of Canada Limited, AECL-7083, Ontario, Canada.

[2] Ziemkiewicz, P.F., and Skousen, J., 2000, Use of Coal Combustion Products for Reclamation, West Virginia University.

[3] Chou, M.I.M, Patel, V., Su, W.J., and Stucki, J., 2000, Brick Manufacture with Fly Ash from Illinois Coal, Final Technical Report, Illinois States Geological Survey.

[4] Rebeiz, K.S., Banko, A.S., and Craft, A.P., 1999, Toxic and Radioactive Waste Management, pp. 107 – 111.

[5] Paul, N.C., 1992, Coal ash Utilization, In : Encyclopedia of Environmental Control Technology, Vol. 5, Waste Minimization and Recycling by Paul N. Cheremisoff, , Gulf Publishing Co., Texas, pp. 236 - 243.

[6] Cogburn, C.O., Hodgson, L.M., Ragland, R.C., 1986, Disposal of Low Level Radioactive Waste Using High Calcium Fly Ash, Technical Report, Arkansas University, Dept. of Mechanical Engineering, Fayeffeville – USA.

[7] Lopez, R.S. and Johnson, L.H., 1986, Vault Sealing Research and Development for the Canadian Nuclear Fuel Waste Management, Atomic Energy of Canada Limited - 9053.

[8] LeNeveu, D.M., 1986, Vault Submodel for the Second Interim Assesment of the Canadian Concept for Nuclear Fuel Waste Disposal : Post-Closure Phase, Atomic Energy of Canada Limited - 8383.

[9] Ven Te Chow, 1964, Handbook of Applied Hydrology, Mc Graw-Hill Book Company, New York, pp. 13-1, 13-15.

[10] Champ, D.R., Moltyaner, G.L., Young, J.L. and Lapcevic, P., 1985, A Downhole Column Technique for Filed Measurement of Transport Parameter, AECL-8905.

[11] Poernomo, H., Sardjono, D., dan Budiyono, M.E., 2004, Karakteristik Sorpsi dan Difusi ⁹⁰Sr dalam Abu Batubara sebagai Kandidat Bahan Urug pada Penyimpanan Limbah Radioaktif, Prosiding Seminar Nasional Kimia XIV, UGM, Yogyakarta.

[12] Guven, R.W., 1985, Water Res. Res. 21, 5.

DOI: https://doi.org/10.22146/ijc.21808