Properties of Calcium Acetate Manufactured with Etching Waste Solution and Limestone Sludge as a Cementitious High-Early-Strength Admixture

Table 8

ICP Analysis of heavy metals (mg/).

	Recycled acetic acid	Limestone sludge : recycled acetic acid			Standard
		2 : 1	2 : 1.5	2 : 2
Cd	Not detected	Not detected	Not detected	Not detected	<0.1
Cr	Not detected	Not detected	Not detected	Not detected	<2
Cu	3	1.5	1.62	1.61	<3
Hg	Not detected	Not detected	Not detected	Not detected	<0.005
Pb	Not detected	Not detected	Not detected	Not detected	<1
Mn	Not detected	Not detected	Not detected	Not detected	—
Zn	3	1.5	1.7	1.9	<5
As	Not detected	Not detected	Not detected	Not detected	<0.5
Solid contents	62%	22%	27%	29%

Water quality standards of Japan.