Table 2 Relative content of minerals in Fe oxides of GTS and the treated products.

From: A facile calcination conversion of groundwater treatment sludge (GTS) as magnetic adsorbent for oxytetracycline adsorption

 

Minerals

Relative percentage (%)

GTS

Ferrihydrite

96.10

Hematite

3.90

S300

Ferrihydrite

90.26

Hematite

8.52

Maghemite

1.22

S500

Ferrihydrite

70.18

Hematite

11.45

Maghemite

18.37

S700

Ferrihydrite

45.35

Hematite

22.60

Maghemite

32.05

Na300

Ferrihydrite

74.75

Hematite

10.65

Maghemite

14.60

Na500

Ferrihydrite

58.74

Hematite

17.50

Maghemite

23.76

Na700

Ferrihydrite

37.29

Hematite

52.60

Maghemite

10.11

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