Heavy Metal Adsorption onto Kappaphycus sp. from Aqueous Solutions: The Use of Error Functions for Validation of Isotherm and Kinetics Models

Table 6

Thermodynamic parameters for the metal ions biosorption onto Kappaphycus sp. dried biomass.

Metal ion			(kJ mol^−1)
	(kJ mol^−1)	(kJ mol^−1 K^−1)	298° K	303° K	313° K	323° K
Pb^2+	16.4501	57.5745	−0.7071	−0.9950	−34.4709	−35.0466	0.999
Cu^2+	11.7518	40.4642	−23.8102	−24.0125	−24.4171	−24.8218	0.999
Fe^2+	10.0799	23.6583	−17.1301	−17.2484	−17.4849	−17.7215	0.999
Zn^2+	29.4432	80.7755	−53.5143	−53.9182	−54.7259	−55.5337	0.999