Very low aqueous solubility magnesium containing mineral surface conversion into slow release fertilizer, MgNH4PO4 (struvite) crystals, utilizing simulated, N and P nutrient-containing, anthropogenic wastewater will be presented. The in situ experiments were utilized to understand fundamental processes, including reactive intermediates, their growth mechanisms and kinetics. These all take place during solid magnesium crystalline surface (MgO and MgCO3) conversion in the presence of simulated wastewater solutions. In particular, the presented work provides new insights into the relationships among the struvite formation under varying N:P concentrations, dissolved organic matter amount, calcium ion concentration and solution pH. The diffusion-limited fundamental data are obtained from flat, semi-infinite model single crystal surfaces. These surfaces are then be propagated into tailor made Fe and Ca functionalized MgO nanoparticles to monitor struvite growth under interface limited growth conditions.

Interfacial properties and crystalline transformations of doped MgO and MgCO3 particles during nutrient (N and P) recovery from aqueous solutions

Macromolecular Chemistry: The Second Century

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ACS Spring 2020 National Meeting & Expo

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.