Characteristics and Applications of Sewage Sludge Biochar Modified by Ferrous Sulfate for Remediating Cr(VI)-Contaminated Soils

Table 3

Experimental design for the stability study.

Test no.	Cr(VI)-contaminated soil (kg)	CHBC dosage (kg)	CHBC dosage (%)
1	5	0	0
2	5	0.05	1
3	5	0.15	3
4	5	0.25	5
5	5	0.5	10