The performance of diphenyldichlorosilane coated ammonium exchange zeolite and its application in the combination of adsorption and biodegradation of hydrocarbon contaminated ground water

Abstract

To enhance biodegradation in Permeable Reactive Barriers, Diphenyldichlorosilane (DPDSCI) coated ammonium zeolite was selected as a reactive material for development as it undergoes reversible hydrocarbon adsorption and may release nutrients in a controlled manner. To investigate its hydrocarbon adsorption and nutrient release behaviour under varying conditions, batch tests were conducted by immersing the material into different concentrations of toluene and potassium chloride solutions. Results showed that the ammonium release ability was not significantly influenced by a change in toluene concentration, while the toluene adsorption performance was affected by fluctuations in potassium conc..