Characterization of microalgae-bacteria consortium cultured in landfill leachate for carbon fixation and lipid production

Xin Zhao, Yan Zhou, Sheng Huang, Duanyang Qiu, Lance Schideman, Xiaoli Chai, Youcai Zhao

Research output: Contribution to journalArticlepeer-review

Abstract

The characteristics of cultivating high-density microalgae-bacteria consortium with landfill leachate was tested in this study. Landfill leachate was collected from Laogang landfill operated for over 10years in Shanghai, China. The maximum biomass concentration of 1.58gL-1 and chlorophyll a level of 22mgL-1 were obtained in 10% leachate spike ratio. Meanwhile, up to 90% of the total nitrogen in landfill leachate was removed in culture with 10% leachate spike ratio with a total nitrogen concentration of 221.6mgL-1. The fluorescence peak of humic-like organic matters red shifted to longer wavelengths by the end of culture, indicating that microalgae-bacteria consortium was effective for treating landfill leachate contaminants. Furthermore, with the leachate spike ratio of 10%, the maximum lipid productivity and carbon fixation were 24.1 and 65.8mgL-1d-1, respectively. Results of this research provide valuable information for optimizing microalgae culture in landfill leachate.

Original languageEnglish (US)
Pages (from-to)322-328
Number of pages7
JournalBioresource Technology
Volume156
DOIs
StatePublished - Mar 2014

Keywords

  • Biofuel production
  • Carbon fixation
  • Landfill leachate
  • Microalgae
  • Microalgae-bacteria consortium

ASJC Scopus subject areas

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

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