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Table 5 Thermodynamic parameters of adsorption of Cu+2, Hg+2, Pb+2 and Cd+2 by DiGu.MC

From: Novel diaminoguanidine functionalized cellulose: synthesis, characterization, adsorption characteristics and application for ICP-AES determination of copper(II), mercury(II), lead(II) and cadmium(II) from aqueous solutions

 

Ä\({\text{G}}_{{{\text{ads}}}}^{ \circ }\) (KJ/mol)

Ä\({\text{H}}_{{{\text{ads}}}}^{ \circ }\) (KJ/mol)

Ä\({\text{S}}_{{{\text{ads}}}}^{ \circ }\) (J/mol K)

 

298 K

308 K

318 K

  

Cu2+

− 27.51

− 2.92

− 0.321

− 436.2

− 1382.3

Hg2+

− 26.82

− 3.55

− 1.99

− 400.3

− 1264.1

Pb2+

− 27.65

− 4.04

− 0.91

− 429.45

− 1358.34

Cd2+

− 3.76

− 1.25

0

− 59.96

− 189.135

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BMC Chemistry

ISSN: 2661-801X

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