Penggunaan Abu Layang dan Zeolit sebagai Bahan Urug pada Penyimpanan Limbah Radioaktif
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 (De) 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 (Co) of 500 ppm. The concentration of uranium in the effluents in
interval 15 minutes represented as Ct was analyzed by spectrophotometer, then
using Co and Ct, data effective dispersion coefficient (De) 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 De = 1.11.10-5 cm2/second can be used as
backfill material.
Penulis: Herry Poernomo, Noor
Anis Kundari, Burhani J W
Kode Jurnal: jpkimiadd050051
