Table 3.

The release rates (ppm h^−0.5) of Si, Na and Al ions from the samples ZSM-5, ZA and ZX in FaSSGF and FeSSGF (Stage I: 1–12 h and Stage II: 12–96 h)

Ion	Sample	FaSSGF		FeSSGF
		Stage I	Stage II	Stage I	Stage II
Na	ZSM-5	1885.5	96.5	1243.9	252.3
	ZA	1859.4	109.8	1298.1	244.5
	ZX	1819.4	105.2	1262.6	215.3
Al	ZA	37.4	23.9	15.6	1.4
	ZX	33.5	19.3	21.7	0.9
Si	ZSM-5	0.26	0.06	0.7	0.33
	ZA	16.07	10.8	5.7	2.87
	ZX	23.08	8.7	8.9	3.03