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In spite of several studies on algal wastewater treatment, comparison of performances is difficult due to differences in parameters such as algal culture, wastewater, photobioreactor employed, temperature, light intensity etc. Keeping this in mind, present study was focused on phycoremediation potential of eleven algal cultures (seven isolated cultures and four procured cultures) in three different wastewaters [(sewage treatment plant wastewater (STP), dairy processing industry (DWW) and slaughter house wastewater (SWW)]. Most of the algal cultures exhibited exemplary performance in terms of biomass production (0.78-1.16 g L− 1) and nutrient removal with removal efficiencies reaching maximum in case of isolated algal culture PA9 in dairy wastewater (sCOD: 93.4%, NO 3− N: 82.1%, NH4+-N: 92.2%, PO 4 3−-P: 100%) and PA4 in slaughterhouse wastewater (sCOD: 73.2%, NO 3− N: 88.5%, NH4+-N: 90.3%, PO …