. 2020 Jun 1;10:8831. doi: 10.1038/s41598-020-65814-3

Table 5.

Optimum reaction conditions for the removal of Cr(VI) from Bentonite-supported nanoscale Zero-Valentiron prepared by different scholars.

Author	Fe to Bentonite Mass Ratio	Dosage (g/L)	pH	Temperature (°C)
Shi³¹	1:1	4	2	40
Wang³²	1:0.04	3	2	—
This article	1:0.5	5	5	35