Enhancing the flow field in parallel spiral-flow column photobioreactor to improve CO2 fixation with Spirulina sp.

被引：8

作者：

Shen, Yuz ^{[1
]}

Zhang, Yingshi ^{[1
]}

Zhang, Qi ^{[1
]}

Ye, Qing ^{[1
]}

Cai, Qilin ^{[2
]}

Wu, Xi ^{[1
]}

机构：

[1] Soochow Univ, Coll Energy, Suzhou 215006, Peoples R China

[2] Soochow Univ, Sch Rail Transportat, Suzhou 215131, Peoples R China

来源：

SCIENCE OF THE TOTAL ENVIRONMENT | 2021年 / 799卷

基金：

中国博士后科学基金;

关键词：

Microalgae; CO2; fixation; Light/dark cycle; CFD; Spiral flow field; MICROALGAL; EFFICIENCY;

D O I：

10.1016/j.scitotenv.2021.149314

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A parallel spiral-flow column photobioreactor (PSCP) composed of eight spiral-flow columns, and two pipe headers was designed for scale-up cultivation of microalgae to capture CO2. To solve the disturbance of spiral flow fields among parallel columns, computational fluid dynamics (CFD) simulation was used to optimize the main structural parameters, such as the number and the height of microalgae solution outlet (MSO), to improve flow field structure and enhance the cells' light/dark cycle. The horizontal velocity in the direction of optical path and the turbulent kinetic energy (TKE) reached the peak values of 0.214 m/s and 5.28 m(2)/s(2) when MSO number was four and MSO height was 1.05 m. Meanwhile, the disturbance of the spiral flow field among parallel columns are minimum, and microalgae light/dark cycle frequency was 33.3% higher than that of conventional bubble column photobioreactor. Therefore, the biomass yield and CO2 fixation rate of microalgae increased by 81.5% and 100.5%, respectively. (C) 2021 Elsevier B.V. All rights reserved.

引用

页数：9

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