Microalgal nutrients recycling from the primary effluent of municipal wastewater and use of the produced biomass as bio-fertilizer

摘要: Availability of N, P and other trace metals in municipal wastewater (MWW) makes it very attractive to produce microalgae biomass using MWW. Although limited organic carbon is available MWW, supplementing flue gas as CO2 sources may enhance both the production recycling nutrients. Five strains were grown primary effluent a small-scale indoor experiment, compare their nitrogen phosphorus recovery abilities. From this study, two potential (Chlorella sp., Scenedesmus sp.) selected for large-scale (i.e., 200 L) outdoor experiment. Each these was four different conditions: (1) MWW without any source, (2) with pure CO2, (3) simulated (SFG), (4) modified BG-11 medium CO2. For strains, injection either or SFG cultures resulted faster growth rates, higher productivities compared that did not receive SFG. Furthermore, TN from was ≥ 95% received SFG; however, all cases, less than 15% initial concentration. Both (MWGMB) used bio-fertilizer grow wheat plant. Number leaves average size plants MWGMB conventional NPK fertilizer.