Evaluating Zeolite and Flue Gas Desulfurized Gypsum to Regulate Soluble Reactive Phosphorus and Nitrogen Formation.

Both nitrogen (N) and phosphorus (P) are reactive nutrients associated with environmental pollution. A study was conducted to evaluate the suitability of using Zeolite and flue gas desulfurized (FGD) gypsum to regulate reactive nitrogen and phosphorus dynamics. Zeolite and FGD gypsum were reacted with different concentrations of P solution and measured the adsorption and desorption of P. Results showed that both Zeolite and FGD are effective to adsorption P. Moreover, Zeolite was found to be very effective to adsorb ammonium. Using Zeolite and FGD gypsum together can be effective to manage N and P fertilization and environmental pollution. A long-term field study is needed to optimize and validate the results.