AMMONIA 4 (IMAGE) Rice University Caption Rice University postdoctoral fellow Zhen-Yu Wu, left, and graduate student Feng-Yang Chen show the products of their high-performance nanowire catalyst, which has the ability to pull ammonia and solid ammonia (fertilizer) from nitrate, a common contaminant in industrial wastewater and polluted groundwater. Credit Jeff Fitlow/Rice University Usage Restrictions None License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.