Enhanced Removal of Lead by Chemically and Biologically Treated Carbonaceous Materials

Table 6

Removal of lead from real water samples by modified AC.

Water sample	Sorbent	Sorbent mass	Spiked (ppm)	% Extraction
				1st stage	2nd stage
Drinking tap water	AC			29.0%	70.0%
	Ox-AC			86.0%	91.8%
	Rd-AC		1.900	80.5%	85.0%
	Ox-AC-BY			92.0%	99.0%
	Rd-AC-BY	200 mg		91.0%	95.7%
Agricultural waste water	Ox-AC			66.0%	87.0%
	Rd-AC		1.590	62.0%	83.0%
	Ox-AC-BY			75.0%	95.0%
	Rd-AC-BY			77.0%	97.0%

∗ % Extraction values are based on 𝑛=3 with standard deviation of 3.0–5.0%.