Heterotrophic and mixotrophic cultivation of microalgae to simultaneously achieve furfural wastewater treatment and lipid production

Pengfei Cheng, Jianke Huang, Xiaotong Song, Ting Yao, Jingshun Jiang, Chengxu Zhou, Xiaojun Yan, Roger Ruan

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

Furfural wastewater (FWW) treatment is important in modern chemical production. However, traditional wastewater treatment methods are inappropriate for the treatment of FWW. In this work, Chlorella pyrenoidosa was employed to study the growth and pollutants removal with both heterotrophic and mixotrophic cultures. The results show that the biomass and removal efficiency for COD and TN were the highest under 10-fold dilution. However, TP removal were inconsistent when the algae were cultivated in both mixotrophic and heterotrophic modes. Compared to high nitrogen (0.75 g/L NaNO3), the algal cells grew faster when adding 0.25 g/L NaNO3 to the FWW, whether in mixotrophic or heterotrophic conditions. The total lipid content in heterotrophic conditions was 18.53%, which was higher than the values in mixotrophy when the concentration of NaNO3 was 0.75 g/L. Different carbon assimilation mechanisms of the algal cells result in a discrepancy in cell growth and pollutant removal, under different culture modes.

Original languageEnglish (US)
Article number126888
JournalBioresource Technology
Volume349
DOIs
StatePublished - Apr 2022

Bibliographical note

Funding Information:
This research was supported in part by grants from the National Natural Science Foundation of China ( 32170369 ), the National Key Research and Development Program of China (2018YFD0901504, 2018YFA0903003), the Natural Science Foundation of Zhejiang Province (LZJWY22B070001, LY20D060003), the Open Fund of Key Laboratory of Experimental Marine Biology, Chinese Academy of Sciences (KF2019NO3), the State Key Laboratory of Marine Resource Utilization in South China Sea (Hainan University) (MRUKF2021003), the Fundamental Research Funds for the Provincial Universities (SJLY2020007) and University of Minnesota Center for Biorefining.

Publisher Copyright:
© 2022 Elsevier Ltd

Keywords

  • Furfural wastewater
  • Lipid production
  • Microalgae cultivation
  • Nutrient removal

PubMed: MeSH publication types

  • Journal Article

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