Table 4. Uranium Concentration (ppm) of the Filtrate under Different Filtration Scenarios^a.

		time (min)
filter press		1	2	4	8	16	30
without filter aid	bulk	5.8	2.7	0.9	0.2	0.1	0.09
	supernatant	1.2	1.2	0.8	0.8
	settled	5.0	0.9	0.2	0.2	0.1
filter aid	bulk	2.8	1.8	0.7	0.4	0.4	0.07
	supernatant	0.4	0.3	0.3	0.3
	settled	3.7	1.1	0.6	0.4	0.1
background [U] approximately 0.06 mg L–1

^aItalic font indicates uranium concentrations unacceptable for release (>1 mg L^–1).