title: Cultivation of Arthrospira (Spirulina) platensis in olive-oil mill wastewater treated with sodium hypochlorite.
abstract: The subject of this paper is the cultivation of the cyanobacterium Arthrospira (Sprirulina) platensis in olive-oil mill wastewater (OMWW) treated with sodium hypochlorite (NaOCl). The main positive effect of NaOCl on the OMWW characteristics is the decrease of the phenol concentration and turbidity, rendering the OMWW suitable for A. platensis growth. Maximum biomass production (1696 mg/l) was obtained when the concentration of OMWW in the cultivation medium was 10% with the supplementation of 1g/l NaNO(3) and 5 g/l NaHCO(3). However, the addition of NaHCO(3) has no significant effect, indicating that the only limited nutrient in this wastewater is nitrogen, while carbon is provided by the organic compounds of the wastewater. The maximum of the removals of chemical oxygen demand (COD) and carbohydrates was 73.18% and 91.19%, respectively, while phenols, phosphorus and nitrates in some runs was completely removed.
authors.affiliation: Department of Natural Resources Management and Agricultural Engineering, Agricultural University of Athens, Iera Odos 75, 11855 Athens, Greece. markoug@aua.gr
authors.forename: Giorgos
authors.initials: G
authors.lastname: Markou
authors.forename: Iordanis
authors.initials: I
authors.lastname: Chatzipavlidis
authors.forename: Dimitris
authors.initials: D
authors.lastname: Georgakakis
mesh_terms: D001673:Biodegradation, Environmental / Q000187:drug effects; D057919:Biological Oxygen Demand Analysis; D018533:Biomass; D018929:Cell Culture Techniques / Q000379:methods*; D007220:Industrial Waste / Q000032:analysis*; D000069463:Olive Oil; D010758:Phosphorus / Q000302:isolation & purification; D010938:Plant Oils / Q000737:chemistry*; D012973:Sodium Hypochlorite / Q000494:pharmacology*; D053545:Spirulina / Q000254:growth & development*; D014865:Waste Disposal, Fluid; D014874:Water Pollutants, Chemical / Q000302:isolation & purification
chemical_list: D007220:Industrial Waste; D000069463:Olive Oil; D010938:Plant Oils; D014874:Water Pollutants, Chemical; D010758:Phosphorus; D012973:Sodium Hypochlorite