Table 6.
Microalgae-based wastewater treatment (WWT) for nutrients and organics removal.
| Microalgae | Wastewater type | Removal efficiency | Reference |
|---|---|---|---|
| Scenedesmus obliquus | Piggery WW | 91.43% (BOD), 83.11% (COD), 83.74% (TN), and 54.69% (TP) | [171] |
| Chlorella vulgaris | Brewery WW | 91.43% (BOD), 83.11% (COD), 83.74% (TN), and 54.69% (TP) | [172] |
| Scenedesmus spp. | Anaerobic membrane bioreactor effluent (domestic WW) | N and P removal ranged from 90 to 99% | [173] |
| Halochlorella rubescens | Secondary municipal WW | 83.2% (NO3−-N) and 73.2% (PO43−) | [174] |
| Chlorella sorokiniana and Scenedesmus obliquus | Industrial and municipal WW + stormwater | 63.6% (COD), 4.2% (TN), and 82.7% (TP) | [175] |
| Scenedesmus obliquus | Stimulated municipal WW | 99.2% (NH4+), 91.2% (PO4), and 83.6% (TOC) | [176] |
| Chlorella sorokiniana-activated sludge consortium | Synthetic municipal WW | 98% (NH4+), 96% (PO43−), and 88% (COD) | [177] |
| Chlorella vulgaris with activated sludge | Synthetic municipal WW | 81% (NH3), 39% (PO43−), and 98% (COD) | [178] |
| Galdieria sulphuraria | Primary-treated WW | 6.26 mg L−1 d−1 (NH3), 1.41 mg L−1 d−1 (PO43−), and 16.4 mg L−1 d−1 (COD) | [179] |
BOD, Biological oxygen demand; COD, Chemical oxygen demand; NH3, Ammonia; NH4+, Ammonium; PO43−, Phosphate; TN, Total nitrogen; TOC, Total organic carbon; TP, Total phosphorus.