Incineration of Textile Sludge for Partial Replacement of Cement in Concrete Production: A Case of Ethiopian Textile Industries

Table 1

Heavy metals on the sludge.

Heavy metals (mg/l)	Row sludge	Incinerated ash at 625°C
Cu	6.23	7.31
Fe	284	286.3
Mg	3.12	4.03
Ca	2.8	3.7
Pb	1.79	1.5
Zn	41.73	44.17
Si	172.47	181.82
Cr	7.23	5.53
Cd	33.42	33.40
Ni	0.49	0.47
Mn	5.83	5.81