Application of real treated wastewater to starch production by microalgae: Potential effect of nutrients and microbial contamination

Some starch-accumulating microalgae are promising biomass resources for producing platform chemicals biorefinery applications. The use of treated wastewater as the cultivation medium has been considered because real contains not only nutrients, but also bacteria from activated sludge. In this study, potential feasibility starch production by Chlorella-related was investigated evaluating effect of: 1) chemical constituents and 2) microbial contamination in wastewater, 3) disinfection chlorination. showed highest microalgae/carbohydrate productivity than simulated wastewaters. For high carbohydrate content, a relatively low nitrogen concentration important. Meanwhile, biological originating inhibition on microalgal growth, demonstrating necessity control (e.g. chlorination) during using domestic growth medium. Then, three chlorination concentrations were compared, at 2.0 mg Cl/L 15 min most effective to maintain proportion (19.3 mg/L). findings study provide direction application scale-up intracellular production.