Table 4 The adsorption capacities (qe) of the heavy metals for CaCO3 and CaO.

From: Effective removal of heavy metal ions (Pb, Cu, and Cd) from contaminated water by limestone mine wastes

CaCO3

CaO

qe (mg/g)

qe (mg/g)

Pb+2

Cu+2

Cd+2

Pb+2

Cu+2

Cd+2

230

62.5

1.5

2482.1

249.5

375

300

87.25

0.6

2988.1

500

499.6

350

112.375

0.9

3234.3

1000

624.2

272.5

137.5

0.6

1630.5

1250

748.8

276.75

66.5

0.6

1672.7

274.5

996.3

280.2

80.625

0.64

1259.3

243

1125

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