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Table 6 Flame AAS for heavy metals analysis of eggshells powder leftover samples during shake-flask cultivation system at zero incubation time and after 32 h of the cultivation process

From: Eggshell waste bioprocessing for sustainable acid phosphatase production and minimizing environmental hazards

Metals conc. (mg/Kg)

Eggshells leftover samples at zero incubation time

Eggshells leftover samples after 32 h

Co

8.98

 < 0.1

K

2478

10,996.1

Fe

73

157.88

Ni

3.732

2.05

Cd

1.0904

1.262

Cr

3.84

43.65

Zn

9.468

16.72

Mg

22,620

13,136.53

Mn

4.824

11.496

Li

2.312

1.323

Ca

580,440

306,000

Sn

 < 1.2

107

Ag

2.336

351.92

Na

75,900

39,675

Cu

10.8

30.31