| AD | Anaerobic digester |
| AEM | Anion-exchange membrane |
| AMNR | Advanced microbial nutrient recovery cell |
| BEC | Bioelectroconcentration cell |
| BES | Bioelectrochemical system |
| BEMAA | Bioelectrochemical membrane-absorbed ammonia system |
| BPM | Bipolar membrane |
| CEM | Cation-exchange membrane |
| COD | Chemical oxygen demand |
| EM | Electron mediator |
| FO | Forward osmosis |
| HM | Hydrophobic membranes |
| IEM | Ion-exchange membranes |
| MEC | Microbial electrolysis cell |
| MFC | Microbial fuel cell |
| MNRC | Microbial nutrient recovery cell |
| MRESC | Microbial reverse-electrodialysis electrolysis cell |
| OsBCRS | Forward osmosis integrated bioelectroconcentration and recovery system |
| PBS | Phosphate buffer solution |
| PEM | Proton-exchange membrane |
| PNRC | Photomicrobial nutrient recovery cell |
| PP | Polypropylene |
| PTFE | Polytetrafluoroethylene |
| PVDF | Polyvinylidene fluoride |
| RRMFC | Resource recovery microbial fuel cell |
| SMNRC | Stacked microbial nutrient recovery cell |
| WW | Wastewater |
| WWTPs | Wastewater treatment plant |