Scenedesmus sp. Harvesting by Using Natural Coagulant after Phycoremediation of Heavy Metals in Different Concentrations of Wet Market Wastewater for Potential Fish Feeds

The high level of organic elements and nutrients in wet market wastewater (WMW) has raised public concerns. phycoremediation method, which utilizes microalgae, can be further valorized by converting it into various valuable potential bioproducts. production Scenedesmus sp. WMW was investigated as an ingredient for fish feeds this study. two natural plant-based coagulants, Cajanus cajan (pigeon pea) Cicer arietinum (chickpea), harvesting microalgae were compared. Statistical analysis response surface methodology used to investigate the flocculant dosage pH effect on efficiency. It found that (CC) (CA) both had a efficiency 89.29% 88.56%, respectively. optimal CC 178.75 mg/L 11.72, CA, they 137.77 9.15. This study indicated remove heavy metals cadmium (87.24%), chromium (85.55%), ferum (90.35%), content (μg/kg ppb) dry biomass ultimately low did not exceed maximum concentration set up European Commission Regulation. Fourier Transform Infrared (FTIR) displayed O-H, N-H C-H functional groups. protein–lipid application feed sample 45.8–43.6% 15–13%. Moreover, contained 53% 40% oleic acid, is fatty acid methyl ester (FAME). As result, there treatment; coagulants give possibilities efficient recovery are applicable improving quality cultivated WMW.