Table 3
The mean of heavy metal removal percentage of leachate at three value of pounding time
Zeolite	Time (min)	Na	Ca	Mg	EC	pH	Pb	Cd	Ni	Cr
Miyaneh	70	10.3	4.08	28.4	−1	1.01	−67	8.2	15	4.5
	90	9.6	11.4	9.4	0.71	0.2	−8.9	13	6.8	4.4
	110	45.5	13.9	8	3.1	−2.2	−10	3.9	3.6	−9
Mashhad	70	−16	5.7	16.3	1.5	0.43	3.71	19	7.7	17
	90	−18	2.3	31.7	−0.1	0.32	4.9	18	2.79	12.3
	110	−6	8.8	−3.4	1.31	0.25	17.5	6.4	23.6	32.1
Semnan	70	14	29.9	7.5	−1	0.22	2.45	21	3	26
	90	13	2.7	11.7	3.3	0.25	3.36	24	9.6	8.6
	110	20	6.5	20.9	1.75	0.11	8.76	18	7.9	7.7

EC, Electrical conductivity.

Tabatabaei et al. International Journal Of Recycling of Organic Waste in Agriculture 2012 1:2   doi:10.1186/2251-7715-1-2