IN SITU DESTRUCTION OF NITRATE AND NITRITE IN CONTAMINATED GROUNDWATER: APPLICATION OF A CATALYST REACTOR BED
Ongoing investigations in this research project are:
(a) Assess the effectiveness and limitations of Pd catalysts in a fixed bed reactor at bench scale (batch and column reactor systems) for field applications. This includes assessing the effect of substrates (nitrate and nitrite) concentration, Pd catalyst concentration, hydrogen and formic acid concentration as electron donors, and residence time on reaction kinetics.
(b) Further evaluate the impact of key geochemical parameters such as (i) pH, (ii) bicarbonate alkalinity, and (iii) biogenic sulfide, on the reaction rate constant.
(c) Develop and test an inexpensive and robust technique for the treatment of groundwater contaminated with this most common pollutant that is easily installed at contaminated sites, and that also supports long-term in situ remediation with limited maintenance.