Use of Ethylenediaminetetraacetic Acid as a Scavenger for Chromium from “Wet Blue” Leather Waste: Thermodynamic and Kinetics Parameters

Table 3

QTAIM parameters obtained by the main interatomic interactions in the isomer (B) of the Cr-EDTA complex, the Cr-NTA(H₂O)₂, and Cr-collagen complex in a.u.

	BCP			Hc
Cr-EDTA	Cr–O1	0.175		−0.064
	Cr–O2	0.122		−0.018
	Cr–O3	0.135		−0.025
	Cr–O4	0.170		−0.062
	O1–C5	0.273		−0.270
Cr-(NTA)(H2O)2	Cr–O2	0.035		−0.007
	Cr–O5	0.052		−0.017
	Cr–O8	0.081		−0.033
	Cr–O9	0.086		−0.034
	Cr–N11	0.099		−0.039
Cr-collagen	Cr–O1	0.055		−0.008
	Cr–O2	0.055		0.009
	Cr–O3	0.058		−0.012
	Cr–O4	0.086		−0.031