Effect of ferric ion on nitrogen consumption, biomass and oil accumulation of a Scenedesmus rubescens-like microalga

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  3. 기타
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논문

Effect of ferric ion on nitrogen consumption, biomass and oil accumulation of a Scenedesmus rubescens-like microalga

학술지

Bioresource technology : biomass, bioenergy, biowastes, conversion technologies, biotransformations, production technologies

저자명

Lin, Qiang; Gu, Na; Lin, Junda

초록

Highlights► Scenedesmus rubescens-like microalga prefers Fe2+–SO42-/EDTA as the iron source. ► High or low Fe2+ concentration restricts ammonia consumption and FAME accumulation. ► Fe2+ concentrations significantly affect the FAME profiles and productivity. ► High C18 content of this species strengthen its potential for biodiesel production. AbstractThis investigation examined the effects of ferric ion source and concentration on the biomass yield, fatty acid methyl esters (FAME) productivity and composition from Scenedesmus rubescens-like microalga. The algae cultivated with Fe2+–SO42-/EDTA had higher ash free dry biomass (AFDB) production and in vivo chlorophyll a concentration than those with Fe2+–SO42- and Fe3+–Cl− (P<0.001). The high or low Fe2+ concentration can partly restrict the ammonia consumption, the AFDB and FAME accumulation. The algae at 1mg/L Fe2+ concentration had the highest AFDB and FAME productivity (341.1±25.8 and 107.8±19.3mg/L/d) (P<0.001). The mean content of C16 and C18 series at all Fe2+ concentrations was 88.6%±2.9% of total FAME, and it decreased with the increase of Fe2+ concentrations. Among the fatty acids profiles, the contents of C18: 0, C18: 1n−7 and C18: 1n−9 are significantly changed under the different Fe2+ concentrations, but not the contents of C16 series.

발행연도

2012

ISSN

0960-8524

권

112

페이지

pp.242-247

DOI

10.1016/j.biortech.2012.02.097

상세정보링크

http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=05787966&target=NART&cn=NART62196071