. 2019 Mar 6;9:3687. doi: 10.1038/s41598-018-37470-1

Table 2.

Cr⁶⁺ removal by the NZVI/GAC detoxification reaction column and synergistic effects of auxiliary water treatment reagents.

Reaction column	Sample group	Initial concentration of the treatment solution (mg/L)	Volume of the inflection point (mL)	Cr content in the outflow water before the turning point (ICP-MS, mg/L)	Remarks
Cr⁶⁺ detoxification reaction column	Non-additive group	26	800	2.24~4.22	Pure water
Cr⁶⁺ detoxification reaction column	Additive group	26	3705	0.01~0.03	Pure water and auxiliary reagents
Control reaction column	Additive group	26	30*	15.05	Pure water and auxiliary reagents

^*This was a blank outflow value of the control reaction column.