Evaluation of Agrowaste Species for Removal of Heavy Metals from Synthetic Wastewater

Table 3

The pseudo-first-order and the pseudo-second-order model parameters of Cu, Se, Zn, Pb, and Cr adsorption on the moringa (L and B), tea, lupines, and sugarcane straw.

Metals	Pseudo-first-order model						Pseudo-second-order model
	Parameters	ML	MB	T	S	L	Parameters	ML	MB	T	S	L
Pb	K 1	0.017	0.008	0.008	0.007	0.005	K 2	0.001	0.001	0.001	0.001	0.001
	q e	12.9	12.6	12.3	12.4	11	q e	27.17	33.5	25.9	29.23	22.93
	R ^2	0.999	0.962	0.970	0.976	0.933	R ^2	0.8689	0.8425	0.9309	0.9072	0.921
Cu	K 1	0.019	0.018	0.017	0.007	0.008	K 2	0.001	0.001	0.001	0.001	0.001
	q e	12.8	13.5	14.6	12.5	14	q e	81.96	33.16	45.44	31.13	153.83
	R ^2	0.927	0.980	0.997	0.975	0.989	R ^2	0.0336	0.1052	0.163	0.8936	0.1
Cr	K 1	0.018	0.021	0.017	0.009	0.008	K 2	0.001	0.001	0.001	0.001	0.001
	q e	12.69	15.3	14.9	13.5	14.1	q e	69.93	31.9	476	58.82	72.99
	R ^2	0.9849	0.9316	0.9337	0.9906	0.9882	R ^2	0.0408	0.2148	0.003	0.638	0.1731
Zn	K 1	0.018	0.0077	0.0053	0.0076	0.0033	K 2	0.001	0.001	0.001	0.001	0.001
	q e	12.69	12.8	11.2	13.2	12.4	q e	2000	18.1	8.96	78.12	49
	R ^2	0.9849	0.9599	0.955	0.9998	0.9957	R ^2	0.003	0.5952	0.7301	0.4122	0.21
Se	K 1	0.0178	0.0118	0.0151	0.0232	0.0231	K 2	0.001	0.001	0.001	0.001	0.001
	q e	12.89	12.9	11.2	33.2	32	q e	357	15.8	20.4	25.25	21.2
	R ^2	0.9994	0.9263	0.9087	0.9326	0.9269	R ^2	0.002	0.2809	0.1107	0.5034	0.561