Sze Yu ChuahYaleeni Kanna DasanYoke Wang ChengJun Wei LimYeek Chia HoInn Shi TanHenry Chee Yew FooPeck Loo KiewLeong Sim SiongMan Kee Lam2024-10-242024-10-242020-11-01https://iopscience.iop.org/article/10.1088/1757-899X/965/1/012001https://dspace-cris.utar.edu.my/handle/123456789/4541<jats:title>Abstract</jats:title> <jats:p>Microalgae cultivation is usually performed via suspended growth system; however, the subsequent harvesting technologies are either costly or energy intensive. Herein, attached growth of <jats:italic>Chlorella vulgaris</jats:italic> was investigated using low-cost supporting materials (polystyrene foam and cotton duct) to ease the microalgae harvesting process. Cotton duct served as a better supporting material than polystyrene foam as it promoted microalgae attachment. Evidently, the attached cultivation performed on cotton duct granted higher biomass yield (16.40 g/m<jats:sup>2</jats:sup>) than the attached cultivation with polystyrene foam (11.70 g/m<jats:sup>2</jats:sup>) after 14 days of cultivation. From the studied range of 0.1 – 0.3 v/v%, the optimal inoculum concentration for the attached cultivation of <jats:italic>C. vulgaris</jats:italic> on cotton duct was 0.3 v/v%. After 14 days of cultivation, the optimized attached cultivation of <jats:italic>C. vulgaris</jats:italic> was capable to produce a biomass yield of 18.2 g/m<jats:sup>2</jats:sup>. The lipid content of dried microalgae from optimized attached cultivation (43 wt%) was higher than that of suspended cultivation (32.7 wt%).</jats:p>journal-article