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Use of microalgae to recycle nutrients in aqueous phase derived from hydrothermal liquefaction process

Journal

BIORESOURCE TECHNOLOGY
Volume 256, Issue -, Pages 529-542

Publisher

ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2018.01.121

Keywords

Microalgae; Aqueous phase; Inhibitory effect; Hydrothermal liquefaction; Nutrient recycle; Algae cultivation

Funding

  1. National Natural Science Foundation of China [51668044]
  2. Key Research Development Program of the Jiangxi Province of China [20161BBH80029, 20171BBG70036]
  3. Talent Program for Distinguished Young Scholars of Jiangxi Province of China [20171BCB23015]
  4. Key Science and Technology Research Program of Department of Education of the Jiangxi Province of China [150029]

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Hydrothermal liquefaction (HTL) of microalgae biomass generates an aqueous phase (AP) byproduct with limited energy value. Recycling the AP solution as a source of nutrients for microalgae cultivation provides an opportunity for a cost-effective production of HTL based biofuel and algal biomass feedstock for HTL, allowing a closed-loop biofuel production in microalgae HTL biofuel system. This paper aims to provide a comprehensive overview of characteristics of AP and its nutrients recycling for algae production. Inhibitory effects resulted from the toxic compounds in AP and alleviation strategies are discussed.

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