The Sorption of Ni(II) by Grape Shell Ash from Aqueous Solution: Kinetic and Thermodynamic Studies

Table 5

The intraparticle diffusion kinetic parameters for Ni(II) sorption onto GSA at different temperatures of solution.

𝑇 (K)	Equation	𝑅^2	𝑘𝑖	𝐼	𝑞𝑒.exp
298	𝑦=0.0437𝑥+5.9963	0.590	0.043	5.996	6.4137
308	𝑦=0.0253𝑥+6.0509	0.468	0.025	6.050	6.3447
318	𝑦=0.0628𝑥+5.7122	0.699	0.062	5.712	6.3102
328	𝑦=0.0926𝑥+5.5765	0.886	0.092	5.576	6.4137