3.3. Kinetics of metal transfer in EDTA extracts/Chelex mixture
This second part is devoted to the kinetics of metal transfer
from the soil-EDTA extracts to Chelex-100. The feasibility of metal
removal by Chelex-100 from EDTA soil extracts was previously
investigated (Manouchehri et al., 2006).
The kinetic exchange of metal between EDTA extract and resin
may be simulated for an equilibrium process including a pair of
forward and reverse reactions between two species as follows:
MEDTA$ kr
kr
Mres ð10Þ
The reaction rate expression for the above reaction can be expressed
as: