An integrated process for microalgae harvesting and cell disruption by the use of ferric ions

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In this study, a simultaneous process of harvesting biomass and extracting crude bio-oil was attempted from wet microalgae biomass using FeCl3 and Fe-2(SO4)(3) as both coagulant and cell-disrupting agent. A culture solution of Chlorella sp. KR-1 was firstly concentrated to 20 g/L and then proceeded for cell disruption with the addition of H2O2. Optimal dosage were 560 and 1060 mg/L for FeCl3 and Fe-2(SO4)(3), showing harvesting efficiencies of more than 99%. Optimal extraction conditions were identified via the response surface method (RSM), and the extraction yield was almost the same at 120 degrees C for both iron salts but FAME compositions after transesterification was found to be quite different. Given iron salts were a reference coagulant in water treatment in general and microalgae harvesting in particular, the present approach of using it for harvesting and oil-extraction in a simultaneous manner can serve as a practical route for the microalgae-derived biodiesel production.
Publisher
ELSEVIER SCI LTD
Issue Date
2015-09
Language
English
Article Type
Article
Keywords

BIODIESEL PRODUCTION; WET MICROALGAE; IN-VITRO; MEMBRANE; KR-1; EXTRACTION; FILTRATION; BIOMASS

Citation

BIORESOURCE TECHNOLOGY, v.191, pp.469 - 474

ISSN
0960-8524
DOI
10.1016/j.biortech.2015.03.020
URI
http://hdl.handle.net/10203/200615
Appears in Collection
CE-Journal Papers(저널논문)
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