Extraction of Zinc and Manganese from Alkaline and Zinc-Carbon Spent Batteries by Citric-Sulphuric Acid Solution

Table 4

Experimental conditions of the first series of precipitation tests: temperature 80^∘C.

Test	Zn	Mn	C6H8O7	H2SO4
	(gL^−1)	(gL^−1)	(gL^−1)	(M)
1	40	0	78	2.7
2	40	40	78	2.7
3	40	80	78	2.7
4	40	0	157	2.7
5	40	40	157	2.7
6	40	80	157	2.7