Effect of aeration in simple photobioreactor system for biomass production of synechococcus sp. (cyanobacteria) HS-7 and HS-9 as biofuel feedstockSulthan Rafii Ardiansyah, Aliff Muhammad Orlando, Arif Rahman, Nining Betawati Prihantini and NasruddinE3S Web Conf., 67 (2018) 02006DOI: https://doi.org/10.1051/e3sconf/20186702006