Abstract
Constructed wetland technology (CW) is a mature, low-cost, and environmentally sustainable method frequently used for wastewater treatment. Recently, there has been significant research into Microbial Fuel Cell (MFC) technology due to its potential for simultaneous bioenergy generation and wastewater treatment. The fundamental physical processes within CW and MFC are highly complementary, and combining them offers a number of tantalising possibilities for greatly improving wastewater treatment methods. Recent findings have demonstrated a number of beneficial symbiotic interactions that improve overall system performance within an integrated CW-MFC system. Notably, CW operation is enhanced by improvements in the electrochemically active bacteria population at the electrode surfaces, consequently boosting wastewater treatment efficiency. Similarly, the MFC can utilise the natural redox gradient present within CW to assist bioelectricity generation. In this review article, the