Tribonema sp. and Chlorella zofingiensis co-culture to treat swine wastewater diluted with fishery wastewater to facilitate harvest

Pengfei Cheng, Jay J. Cheng, Kirk Cobb, Chengxu Zhou, Nan Zhou, Min Addy, Paul Chen, Xiaojun Yan, Roger Ruan

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Cultivating microalgae on wastewaters is an effective way to produce algal biomass whereas harvesting microalgae is a costly operation. This study we examined the feasibility of co-culturing a high-value microalga with an auto-flocculating strain to enable efficient recovery of biomass. Experiments were conducted to co-cultivate Chlorella zofingiensis with Tribonema sp. on swine wastewater diluted by fishery wastewater under different conditions. The result showed the optimal inoculum ratio of Tribonema sp. to Chlorella zofingiensis was 1:1. The removal efficiencies of pollutants (NH4+-N, TN, TP, and COD) and lipid content were high when the co-culture ratios of Tribonema sp. were high. Also, some larger chain fatty acids, specifically C20:5 and C22:6 were present when the two strains co-culture. The recovery efficiency increased with the increasing proportion of auto-flocculating Tribonema sp. Algae co-culture has the potential to address limitations in substrate utilization by individual strains, also improve the recovery of biomass.

Original languageEnglish (US)
Article number122516
JournalBioresource Technology
Volume297
DOIs
StatePublished - Feb 2020

Bibliographical note

Funding Information:
This work was sponsored by National Natural Science Foundation of China (31560724), the Natural Science Foundation of Zhejiang Province (LY20D060003), the International Postdoctoral Exchange Fellowship Program (20180042), the China Postdoctoral Science Foundation (2017T100583, 2016M600616), the Ningbo Municipal Science and Technology Project (2019C10071), the Ningbo Municipal Natural Science Foundation (431901822), the Natural Science Foundation of Jiangxi Province (20171BAB214014), the Key Laboratory of Poyang Lake Ecological Environment and Resource Development (PK2017001) and the K. C. Wong Magna Fund in Ningbo University. No conflicts, informed consent, human or animal rights are applicable. All the authors listed have approved the manuscript and agreed to authorship and submission of the manuscript for peer review.

Funding Information:
This work was sponsored by National Natural Science Foundation of China ( 31560724 ), the Natural Science Foundation of Zhejiang Province ( LY20D060003 ), the International Postdoctoral Exchange Fellowship Program ( 20180042 ), the China Postdoctoral Science Foundation ( 2017T100583 , 2016M600616 ), the Ningbo Municipal Science and Technology Project (2019C10071), the Ningbo Municipal Natural Science Foundation (431901822), the Natural Science Foundation of Jiangxi Province (20171BAB214014), the Key Laboratory of Poyang Lake Ecological Environment and Resource Development (PK2017001) and the K. C. Wong Magna Fund in Ningbo University.

Publisher Copyright:
© 2019 Elsevier Ltd

Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.

Keywords

  • Chlorella zofingiensis
  • Co-culture
  • Fishery wastewater
  • Harvest efficiency
  • Swine wastewater
  • Tribonema sp.

PubMed: MeSH publication types

  • Journal Article

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