Selecting an indigenous microalgal strain for lipid production in anaerobically treated piggery wastewater

Jatta M. Marjakangas, Chun-Yen Chen, Aino-Maija Lakaniemi, Jaakko A. Puhakka, Liang-Ming Whang, Jo-Shu Chang

    Research output: Contribution to journalArticleScientificpeer-review

    29 Citations (Scopus)

    Abstract

    The aim of this study was to select a potential microalgal strain for lipid production and to examine the suitability of anaerobically treated piggery wastewater as a nutrient source for production of lipid-rich biomass with the selected microalga. Biomass and lipid productivity of three microalgal strains (Chlorella sorokiniana CY1, Chlorella vulgaris CY5 and Chlamydomonas sp. JSC-04) were compared by using different media, nitrogen sources, and nitrogen concentrations. The highest lipid content and productivity (62.5 wt%, 162 mg/L/d) were obtained with C. vulgaris with BG-11 with 62 mg N/L. Secondly, C. vulgaris was cultivated in sterilized, diluted (1–20×), anaerobically treated piggery wastewater. Biomass production decreased and lipid content increased, when wastewater was more diluted. The highest lipid content of 54.7 wt% was obtained with 20× dilution, while the highest lipid productivity of 100.7 mg/L/d with 5× dilution. Piggery wastewater is a promising resource for mass production of oleaginous microalgal biomass.
    Original languageEnglish
    Pages (from-to)369-376
    Number of pages8
    JournalBioresource Technology
    Volume191
    DOIs
    Publication statusPublished - Sep 2015
    Publication typeA1 Journal article-refereed

    Keywords

    • Lipid production
    • Chlorella vulgaris
    • Piggery wastewater

    Publication forum classification

    • Publication forum level 2

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