Boosting photo-biochemical conversion and carbon dioxide bio-fixation of Chlorella vulgaris in an optimized photobioreactor with airfoil-shaped deflectors

Jingwei Fu, Yun Huang, Qiang Liao, Xun Zhu, Ao Xia, Xianqing Zhu, Jo Shu Chang

研究成果: Article同行評審

摘要

Aiming at ameliorating the poor hydrodynamic regimes and uneven light distribution in the conventional airlift flat-plate photobioreactor (AFP-PBR), a novel PBR with static airfoil-shaped deflectors (ASD-PBR) is proposed in this study to boost the microalgal biomass manipulation and hence the photo-biochemical conversion. The ASD module accelerated the circulation of microalgal suspension from the center to two sides with the help of bubbling so that the microalgal cells got more opportunities to access the light source. Compared with the control PBR, the solution velocity along the incident light direction increased by 114.8% in the newly-proposed ASD-PBR. Furthermore, the ASD module also served as a static mixer, which resulted in an increment of 11.5% in mass transfer coefficient and a decrement of 21.4% in mixing time. The amended hydrodynamic characteristics eventually contributed to an improvement of 18.3% and 10.9% in the maximum algal biomass yield and CO2 fixation rate, respectively.

原文English
文章編號125355
期刊Bioresource technology
337
DOIs
出版狀態Published - 2021 十月

All Science Journal Classification (ASJC) codes

  • 生物工程
  • 環境工程
  • 可再生能源、永續發展與環境
  • 廢物管理和處置

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