Investigating the potentiality of Scenedesmus obliquus and Acinetobacter pittii partnership system and their effects on nutrients removal from synthetic domestic wastewater

[Display omitted] •A novel partnership of microalgae and bacteria were studied.•The initial culture ratio at 2:1 of S. obliquus &A. pittii was optimized for waste removal.•Partnership system showed efficient removal of NH4+-N, PO43−-P, TP and COD.•In combined culture bacteria and algae build up a mutual partnership to exchange CO2 and O2. A lab-scale study of Scenedesmus obliquus: Acinetobacter pittii (S. obliquus: A. pitti) partnership cultured in synthetic domestic wastewater was conducted to evaluate the partnership performance for growth and removal of nutrients from wastewater. To draw out the functional dependencies of this partnership measured the ammonia-nitrogen (NH4+-N), ortho-phosphate (PO43−-P), soluble total phosphorus (TP), chemical oxygen demand (COD) and have got the nutrient removal rate of 85.90%, 91.50%, 73.75% and 100% respectively. The results showed that their optimized partnership ratio is 2:1 for S. obliquus: A. pitti and, CO2 & O2 exchanges in between was the more crucial parameters to shifting the best nutrient removals performance and promoted biomass quantity.