Study of brown algae Sargassum (Sargassum ilicifolium) biomass in bio-absorption of various concentrations of phosphate

One of the most important inorganic pollutants is ion phosphate, which is found in different amounts in urban, industrial and agricultural water, and it is possible to enter the surface water resources and underground water resources. Today, various adsorbents are used to remove or remove excess elements from aquatic environments. In this study, marine algae, Sargassum ilicifolium was studied as a bioabsorbent for removal of phosphor ion. In this experiment, various range of pH including (pH 2, 3, 4, 5, 6, 7 and 8), the amount of algae biomass S. ilicifolium (0.01, 0.3, 0.05, 0.1, 0.15, 0.2, 0.3 and 0.4 g) and the initial concentration of ion phosphate (50, 100, 150, 200, 250, 300 and 350 mg L -1) at contact time (0-60 minutes) on removal of phosphate ions from aqueous solution was investigated. Phosphate concentration was measured by spectrophotometric method at 890 nm wavelength. The results of this experiment showed that marine macro algae, S. ilicifolium had the best phosphate absorption capacity of 653.33 mg g-1 in the most suitable conditions, and the phosphate removal efficiency was 71.79%. The most suitable conditions for phosphate absorption were obtained at 0.01 gL -1 algae biomass, pH: 2 and 350 mg L-1 of initial phosphate concentration. The results of this study showed that the dry powder of algae, S. ilicifolium is suitable for removal of phosphate ions from aqueous solution and is an appropriate bioactive agent for urban and agricultural wastewater treatment.