Wastewater Treatment Using Wood Ash and Cement as Chemical Coagulant

Table 5

Absorbance and percentage color removal of different coagulant dosages added.

No.	Sample	Coagulant added (g/500 ml)	Absorbance	% color removal
1	S1	5	0.007	99.18
2	S2	7	0.009	98.95
3	S3	10	0.073	91.53
4	S4	15	0.081	90.6
5	S5	25	0.097	88.76