Anaerobic Digester (IMAGE) American Society of Agronomy Caption Wastewater treatment infrastructure, such as this anaerobic digester, can be leveraged to capture and recycle phosphorus, a limited essential nutrient. Credit Michael Northrop Usage Restrictions None License Licensed 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.