Influence of sulfide, chloride and dissolved organic matter on mercury adsorption by activated carbon in aqueous system

Table 5 Hg distribution under different chloride concentration

	Initial experimental parameters
Chloride conc. (mM)	1	200	400
Hg conc. (μg L⁻¹)	14.3	16.2	15.2
pH	6.82	6.86	6.82
Dissolved O₂ (mg L⁻¹)	3.97	3.83	4.40
	Hg partition after reaching equilibrium
Dissolved Hg (%)	2.7	7.9	4.8
Hg in AC (%)	92.2	99.5	93.6
Particulate Hg (%)	0.02	nd	nd

The liquid volume: 50 mL; AC dosage: 50 mg; shaking speed: 125 rpm; temperature: 30 °C; contact time: 24 h

ISSN: 2468-2039