کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
679324 | 1459941 | 2016 | 5 صفحه PDF | دانلود رایگان |
• Heterocapsa circularisquama specifically flocculated cultures of Dunaliella salina.
• Increased lipid content was observed in flocculated relative to centrifuged biomass.
• Higher levels of C16:0, C18:0, and C18:1 observed in flocculated D. salina biomass.
• More suitable biodiesel properties existed in flocculated than centrifuged biomass.
The aim of this work was to evaluate the flocculation by the dinoflagellate Heterocapsa circularisquama as a means for harvesting three Chlorophyta species, Chlorella vulgaris, Nannochloropsis granulata, and Dunaliella salina. Relative fluorescence of D. salina culture significantly decreased along with 9.3-fold increased flocculation activity within 24 h when mixed with H. circularisquama. Lipid content of bioflocculated D. salina increased about 40%, while fatty acid methyl ester (FAME) profiles exhibited higher levels of C16:0, C18:0, and C18:1, compared to harvest by centrifugation, suggesting higher energy content. Furthermore, bioflocculated D. salina biomass had more suitable biodiesel properties relative to both EN14214 and ASTMD6751, with a cetane number of 49.0 and an iodine value of 95.9. These results suggest that H. circularisquama-induced bioflocculation is applicable for the sustainable and qualitative production of algal biodiesel.
Journal: Bioresource Technology - Volume 202, February 2016, Pages 257–261