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Kinetic exploration of intracellular nitrate storage in marine microalgae

Bjorge Decostere (UGent) , Joeri Coppens (UGent) , Han Vervaeren (UGent) , Siegfried Vlaeminck (UGent) , Leen De Gelder (UGent) , Nico Boon (UGent) , Ingmar Nopens (UGent) and Stijn Van Hulle (UGent)
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Abstract
In this study, a recently developed model accounting for intracellular nitrate storage kinetics was thoroughly studied to understand and compare the storage capacity of Phaeodactylum tricornutum and Amphora coffeaeformis. In the first stage the identifiability of the biokinetic parameters was examined. Next, the kinetic model was calibrated for both microalgal species based on experimental observations during batch growth experiments. Two kinetic parameters were calibrated, namely the maximum specific growth rate (mu(max)) and the nitrate storage rate (k(sto)). A significant difference was observed for the nitrate storage rate between both species. For P. tricornutum, the nitrate storage rate was much higher (k(sto) = 0.036m(3) g(-1) DW d(-1)) compared to A. coffeaeformis (k(sto) = 0.0004m(3) g(-1) DW d(-1)). This suggests that P. tricornutum has a more efficient nitrate uptake ability and intracellular nitrate storage capacity and also indicates the need for determination of k(sto) in order to quantify nitrate storage.
Keywords
Microalgae, modelling, nutrient recovery, parameter identifiability, wastewater, WASTE-WATER, NITROGEN, MODELS, PHYTOPLANKTON, DIATOMS, GROWTH, SENSITIVITY, REMOVAL, DARK

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Chicago
Decostere, Bjorge, Joeri Coppens, Han Vervaeren, Siegfried Vlaeminck, Leen De Gelder, Nico Boon, Ingmar Nopens, and Stijn Van Hulle. 2017. “Kinetic Exploration of Intracellular Nitrate Storage in Marine Microalgae.” Journal of Environmental Science and Health Part A-toxic/hazardous Substances & Environmental Engineering 52 (14): 1303–1311.
APA
Decostere, B., Coppens, J., Vervaeren, H., Vlaeminck, S., De Gelder, L., Boon, N., Nopens, I., et al. (2017). Kinetic exploration of intracellular nitrate storage in marine microalgae. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING, 52(14), 1303–1311.
Vancouver
1.
Decostere B, Coppens J, Vervaeren H, Vlaeminck S, De Gelder L, Boon N, et al. Kinetic exploration of intracellular nitrate storage in marine microalgae. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING. 2017;52(14):1303–11.
MLA
Decostere, Bjorge, Joeri Coppens, Han Vervaeren, et al. “Kinetic Exploration of Intracellular Nitrate Storage in Marine Microalgae.” JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 52.14 (2017): 1303–1311. Print.
@article{8542310,
  abstract     = {In this study, a recently developed model accounting for intracellular nitrate storage kinetics was thoroughly studied to understand and compare the storage capacity of Phaeodactylum tricornutum and Amphora coffeaeformis. In the first stage the identifiability of the biokinetic parameters was examined. Next, the kinetic model was calibrated for both microalgal species based on experimental observations during batch growth experiments. Two kinetic parameters were calibrated, namely the maximum specific growth rate (mu(max)) and the nitrate storage rate (k(sto)). A significant difference was observed for the nitrate storage rate between both species. For P. tricornutum, the nitrate storage rate was much higher (k(sto) = 0.036m(3) g(-1) DW d(-1)) compared to A. coffeaeformis (k(sto) = 0.0004m(3) g(-1) DW d(-1)). This suggests that P. tricornutum has a more efficient nitrate uptake ability and intracellular nitrate storage capacity and also indicates the need for determination of k(sto) in order to quantify nitrate storage.},
  author       = {Decostere, Bjorge and Coppens, Joeri and Vervaeren, Han and Vlaeminck, Siegfried and De Gelder, Leen and Boon, Nico and Nopens, Ingmar and Van Hulle, Stijn},
  issn         = {1093-4529},
  journal      = {JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES \& ENVIRONMENTAL ENGINEERING},
  keyword      = {Microalgae,modelling,nutrient recovery,parameter identifiability,wastewater,WASTE-WATER,NITROGEN,MODELS,PHYTOPLANKTON,DIATOMS,GROWTH,SENSITIVITY,REMOVAL,DARK},
  language     = {eng},
  number       = {14},
  pages        = {1303--1311},
  title        = {Kinetic exploration of intracellular nitrate storage in marine microalgae},
  url          = {http://dx.doi.org/10.1080/10934529.2017.1364921},
  volume       = {52},
  year         = {2017},
}

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