TY - JOUR
T1 - Kinetic modelling of heterotrophic microalgae culture in wastewater
T2 - Storage molecule generation and pollutants mitigation
AU - Murwanashyaka, Theophile
AU - Shen, Liang
AU - Yang, Zheng
AU - Chang, Jo Shu
AU - Manirafasha, Emmanuel
AU - Ndikubwimana, Theoneste
AU - Chen, Cuixue
AU - Lu, Yinghua
N1 - Funding Information:
This work was supported by the National Natural Science Foundation of China (No. 21736009 ) and the Natural Science Foundation of Fujian Province of China (No. 2018J01016 ).
Publisher Copyright:
© 2020 Elsevier B.V.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020/4/15
Y1 - 2020/4/15
N2 - Cultivating microalgae with wastewater offers a dual-beneficial strategy for the removal of nutrients coupled with the accumulation of valuable bioproducts. However, the dynamic mass flow in heterotrophic algal growth is far less known than autotrophic mode. This study particularly provided a new insight into this process by modelling heterotrophic Chlorella sorokiniana. A consensus model was proposed to describe the temporal change of (i) the carbon, nitrogen, and phosphorus in water, (ii) the algal biomass, (iii) the intracellular carbohydrate and lipid, and their correlation under various conditions simulating the complex wastewater environment. The dynamics for the decrement of ambient carbon and nutrients and the increment of biomass, intracellular carbohydrate and lipid was correlated for the first time. The model was calibrated and validated with experimental data of C. sorokiniana. It therefore provides a theoretical basis for the future scale-up of heterotrophic microalgae culture with complicated real wastewaters.
AB - Cultivating microalgae with wastewater offers a dual-beneficial strategy for the removal of nutrients coupled with the accumulation of valuable bioproducts. However, the dynamic mass flow in heterotrophic algal growth is far less known than autotrophic mode. This study particularly provided a new insight into this process by modelling heterotrophic Chlorella sorokiniana. A consensus model was proposed to describe the temporal change of (i) the carbon, nitrogen, and phosphorus in water, (ii) the algal biomass, (iii) the intracellular carbohydrate and lipid, and their correlation under various conditions simulating the complex wastewater environment. The dynamics for the decrement of ambient carbon and nutrients and the increment of biomass, intracellular carbohydrate and lipid was correlated for the first time. The model was calibrated and validated with experimental data of C. sorokiniana. It therefore provides a theoretical basis for the future scale-up of heterotrophic microalgae culture with complicated real wastewaters.
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U2 - 10.1016/j.bej.2020.107523
DO - 10.1016/j.bej.2020.107523
M3 - Article
AN - SCOPUS:85079213462
SN - 1369-703X
VL - 157
JO - Biochemical Engineering Journal
JF - Biochemical Engineering Journal
M1 - 107523
ER -