| PHA | Polyhydroxyalkanoates |
| PHB | Poly(3-hydroxybutyrate) |
| PHBV | Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) |
| TSS | Total suspended solids |
| COD | Chemical oxygen demand |
| TN | Total nitrogen |
| TP | Total phosphorus |
| ATP | Adenosine triphosphate |
| NADPH | Nicotinamide adenine dinucleotide phosphate |