Sustainable Phosphorus Recovery from Wastewater: 3D Printed Graphene Electrodes for Enhanced CDI-Assisted Electric Flocculation

Phosphorus is a valuable but non-renewable resource, and its sustainable use requires efficient recovery from wastewater. However, this is hindered by low phosphorus content and ion interference. This project aims to tackle these issues by utilizing capacitive deionization technology and selective phosphorus adsorption principles to develop a CDI-assisted electric flocculation enhanced deep wastewater treatment and phosphorus recovery technology based on 3D printed graphene capacitive electrodes. The project will focus on developing graphene 3D printing inks and constructing tunable 3D high capacitance adsorption electrode materials, as well as investigating the mechanisms behind effective exposure of phosphorus selective adsorption cores and efficacy. Additionally, the project will establish electrochemical regulation strategies to obtain the most economical phosphorus adsorption-concentration efficiency of wastewater, and evaluate the economic and operational stability of CDI-assisted electroflocculation phosphorus recovery technology. Successful implementation of this project will establish new technologies and principles for the efficient recovery of wastewater phosphorus resources.