%0 Journal Article
%@ 01968904
%A Tan, X.B.
%A Lam, M.K.
%A Uemura, Y.
%A Lim, J.W.
%A Wong, C.Y.
%A Ramli, A.
%A Kiew, P.L.
%A Lee, K.T.
%D 2018
%F scholars:10311
%I Elsevier Ltd
%J Energy Conversion and Management
%K Algae; Animals; Biodiesel; Biomass; Extraction; Microorganisms; Nutrients; Unsaturated fatty acids, Biomass productivity; Chlorella vulgaris; Fatty acid composition; Fatty acid methyl ester; Fourier transform infra reds; Growth optimization; Micro-algae; Semi-continuous, Composting
%P 363-373
%R 10.1016/j.enconman.2018.03.020
%T Semi-continuous cultivation of Chlorella vulgaris using chicken compost as nutrients source: Growth optimization study and fatty acid composition analysis
%U https://khub.utp.edu.my/scholars/10311/
%V 164
%X In the present study, cultivation of Chlorella vulgaris was extensively explored under semi-continuous approach to enhance its growth. The microalgae were cultivated in a photobioreactor supplemented with compost derived from chicken waste as an alternative nutrients source in both batch and semi-continuous cultivations. It was found that Chlorella vulgaris grew well up to 17 cycles of semi-continuous cultivation based on the following conditions for each cycle (3 days per cycle): 30 (v/v) removal of cultivation medium and 0.04 L/L of chicken compost in cultivation medium of pH 3. The average biomass productivity attained through these conditions was 0.0736 g/L/day, which was higher than batch cultivation (0.0568 g/L/day). Besides, the average total lipid content from each cycle under semi-continuous cultivation was maintained in the range of 25�35 wt. The success of lipid extraction from the microalgae biomass was evidenced by the result of Fourier Transform Infrared Red (FT-IR) analysis that revealed lower peak intensity of carbon, especially in the range 2809�3012 cm�1 after lipid extraction. It was also worthwhile to mention that the fatty acid methyl ester (FAME) compositions of Chlorella vulgaris consisted mainly of C16:0 and C18:3 that were not significantly altered during the semi-continuous cultivation. Both saturated and unsaturated fatty acids in the harvested biomass accounted for approximately 26.3 and 73.3, respectively, within 5 cycles of the cultivation. © 2018 Elsevier Ltd
%Z cited By 49