Kinetics of Post-reclamation Boron Dissolution1
- F. J. Peryea,
- F. T. Bingham and
- J. D. Rhoades2
The <0.25-mm particle size fractions of four natively high boron (B) soils were reacted in suspension with a B-specific exchange resin. By separating the resin from the suspension after selected times of reaction, four subsamples of each soil were obtained, representing increasing degrees of reclamation. The subsamples were reacted with deionized water and release of residual B to the supernatant was measured as a function of time. The data for each soil subsample were plotted according to an integrated form of the Elovich reaction rate equation. The release of B from the soils closely conformed to a linear function of the natural logarithm of time. Linear regression analysis was used to calculate the reaction rate constants for each treatment. The rate of post-reclamation B dissolution and the equilibrium concentrations of regenerated B were inversely related to the amount of B removed from each soil during reclamation.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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