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[en] The investigated of the reduction volume liquid wastes containing ofAmericium nuclide contaminant has been done. The reduction volume was done byadding barium sulfate coagulant. The experimental procedure that has beendone by adding regent of barium nitrate and natrium sulfate to the wasteswith its preadjusted pH, then by utilizing the jar test equipment was carriedout the fast stirring speed for 5 minutes and the gentle agitation for 30minutes, therefor its floc and supernatant will be formed. The resultedbarium sulfate floc will trap radionuclide in the wastes. The Variableinvestigated were: the concentration of barium sulfate, pH of the wastes, theflash mixing rate, the gentle agitation rate. The investigated barium sulfateconcentration variable was started from 100 ppm up to 800 ppm. Theinvestigated pH variable was started from pH 7 up to pH 13. The investigatedflash mixing rate were 75, 100, 125, 150, 175, 200, 225, 250 rpm. Theinvestigated gentle agitation variable were 20, 30, 40, 50 rpm. The bestresult which was represented by decontaminating factor (DF) was found frombarium sulfate concentration of 300 ppm and pH 11, and the flash mixing rateof 200 rpm and the gentle agitation rate of 20 rpm, with the separationefficiency = 97.2 %. (author)
Source
Sukarsono, R.; Karmanto, Eko-Edy; Suradjijo, Ganang (National Nuclear Energy Agency, Yogyakarta (Indonesia)) (eds.); Centre for Research and Development of Advanced Technology, National Nuclear Energy Agency, Yogyakarta (Indonesia); 404 p; ISSN 0216-3128; 
; 2000; p. 360-365; Scientific Meeting and Presentation on Basic Research in Nuclear Science and Technology; Pertemuan dan Presentasi Ilmiah Penelitian Dasar Ilmu Pengetahuan danTeknologi Nuklir; Yogyakarta (Indonesia); 25-26 Jul 2000; Also available from Center for Development of Nuclear Informatics,National Nuclear Energy Agency, Puspiptek Area, Fax. 62-21-7560923, PO BOX4274, Jakarta (ID); 5 refs.; 4 tabs.; 5 figs.
; 2000; p. 360-365; Scientific Meeting and Presentation on Basic Research in Nuclear Science and Technology; Pertemuan dan Presentasi Ilmiah Penelitian Dasar Ilmu Pengetahuan danTeknologi Nuklir; Yogyakarta (Indonesia); 25-26 Jul 2000; Also available from Center for Development of Nuclear Informatics,National Nuclear Energy Agency, Puspiptek Area, Fax. 62-21-7560923, PO BOX4274, Jakarta (ID); 5 refs.; 4 tabs.; 5 figs.