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 journalArticlepeer-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 (1-20x), 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 20x dilution, while the highest lipid productivity of 100.7 mg/L/d with 5x 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 - 2015 Jun 8

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Environmental Engineering
  • Renewable Energy, Sustainability and the Environment
  • Waste Management and Disposal

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