Microalgal biofilm growth under day-night cycles

Ward Blanken*, Ana Martins Pito de Magalhaes, Petra Sebestyén, Arjen Rinzema, René H. Wijffels, Marcel Janssen

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

10 Citations (Scopus)

Abstract

Microalgal biofilms of Chlorella sorokiniana were cultivated under simulated day-night cycles at high productivity and high photosynthetic efficiency. Comparing day-night to continuous illumination did not demonstrate differences in the light utilization efficiency. This indicates that biomass consumed overnight represents sugar consumption for synthesis of new functional biomass and maintenance related respiration. Modelling microalgal biofilm growth was employed to calculate maximum productivities and photosynthetic efficiencies. A light limited microalgal biofilm growth model in which both diurnal carbon-partitioning and maintenance under prolonged dark conditions were taken into account was developed, calibrated, and validated experimentally. Extended periods of darkness resulted in reduced maintenance related respiration. Based on simulations with the validated biofilm growth model, it could be determined that the photosynthetic efficiency of biofilm growth can be higher than that of suspension growth. This is related to the fact that the maintenance rate in the dark zones of the biofilm is lower compared to that in the dark zones of suspension cultures which are continuously mixed with the photic zone.

Original languageEnglish
Pages (from-to)16-26
JournalAlgal Research
Volume21
DOIs
Publication statusPublished - 2017

Fingerprint

biofilm
growth models
Chlorella sorokiniana
biomass
euphotic zone
lighting
sugars
synthesis
carbon

Keywords

  • Carbon-partitioning
  • Day-night cycles
  • Microalgal biofilms
  • Modelling growth
  • Respiration

Cite this

Blanken, Ward ; Martins Pito de Magalhaes, Ana ; Sebestyén, Petra ; Rinzema, Arjen ; Wijffels, René H. ; Janssen, Marcel. / Microalgal biofilm growth under day-night cycles. In: Algal Research. 2017 ; Vol. 21. pp. 16-26.
@article{91f8dcbe4e0d4707826cf9874a80e497,
title = "Microalgal biofilm growth under day-night cycles",
abstract = "Microalgal biofilms of Chlorella sorokiniana were cultivated under simulated day-night cycles at high productivity and high photosynthetic efficiency. Comparing day-night to continuous illumination did not demonstrate differences in the light utilization efficiency. This indicates that biomass consumed overnight represents sugar consumption for synthesis of new functional biomass and maintenance related respiration. Modelling microalgal biofilm growth was employed to calculate maximum productivities and photosynthetic efficiencies. A light limited microalgal biofilm growth model in which both diurnal carbon-partitioning and maintenance under prolonged dark conditions were taken into account was developed, calibrated, and validated experimentally. Extended periods of darkness resulted in reduced maintenance related respiration. Based on simulations with the validated biofilm growth model, it could be determined that the photosynthetic efficiency of biofilm growth can be higher than that of suspension growth. This is related to the fact that the maintenance rate in the dark zones of the biofilm is lower compared to that in the dark zones of suspension cultures which are continuously mixed with the photic zone.",
keywords = "Carbon-partitioning, Day-night cycles, Microalgal biofilms, Modelling growth, Respiration",
author = "Ward Blanken and {Martins Pito de Magalhaes}, Ana and Petra Sebesty{\'e}n and Arjen Rinzema and Wijffels, {Ren{\'e} H.} and Marcel Janssen",
year = "2017",
doi = "10.1016/j.algal.2016.11.006",
language = "English",
volume = "21",
pages = "16--26",
journal = "Algal Research",
issn = "2211-9264",
publisher = "Elsevier",

}

Microalgal biofilm growth under day-night cycles. / Blanken, Ward; Martins Pito de Magalhaes, Ana; Sebestyén, Petra; Rinzema, Arjen; Wijffels, René H.; Janssen, Marcel.

In: Algal Research, Vol. 21, 2017, p. 16-26.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Microalgal biofilm growth under day-night cycles

AU - Blanken, Ward

AU - Martins Pito de Magalhaes, Ana

AU - Sebestyén, Petra

AU - Rinzema, Arjen

AU - Wijffels, René H.

AU - Janssen, Marcel

PY - 2017

Y1 - 2017

N2 - Microalgal biofilms of Chlorella sorokiniana were cultivated under simulated day-night cycles at high productivity and high photosynthetic efficiency. Comparing day-night to continuous illumination did not demonstrate differences in the light utilization efficiency. This indicates that biomass consumed overnight represents sugar consumption for synthesis of new functional biomass and maintenance related respiration. Modelling microalgal biofilm growth was employed to calculate maximum productivities and photosynthetic efficiencies. A light limited microalgal biofilm growth model in which both diurnal carbon-partitioning and maintenance under prolonged dark conditions were taken into account was developed, calibrated, and validated experimentally. Extended periods of darkness resulted in reduced maintenance related respiration. Based on simulations with the validated biofilm growth model, it could be determined that the photosynthetic efficiency of biofilm growth can be higher than that of suspension growth. This is related to the fact that the maintenance rate in the dark zones of the biofilm is lower compared to that in the dark zones of suspension cultures which are continuously mixed with the photic zone.

AB - Microalgal biofilms of Chlorella sorokiniana were cultivated under simulated day-night cycles at high productivity and high photosynthetic efficiency. Comparing day-night to continuous illumination did not demonstrate differences in the light utilization efficiency. This indicates that biomass consumed overnight represents sugar consumption for synthesis of new functional biomass and maintenance related respiration. Modelling microalgal biofilm growth was employed to calculate maximum productivities and photosynthetic efficiencies. A light limited microalgal biofilm growth model in which both diurnal carbon-partitioning and maintenance under prolonged dark conditions were taken into account was developed, calibrated, and validated experimentally. Extended periods of darkness resulted in reduced maintenance related respiration. Based on simulations with the validated biofilm growth model, it could be determined that the photosynthetic efficiency of biofilm growth can be higher than that of suspension growth. This is related to the fact that the maintenance rate in the dark zones of the biofilm is lower compared to that in the dark zones of suspension cultures which are continuously mixed with the photic zone.

KW - Carbon-partitioning

KW - Day-night cycles

KW - Microalgal biofilms

KW - Modelling growth

KW - Respiration

U2 - 10.1016/j.algal.2016.11.006

DO - 10.1016/j.algal.2016.11.006

M3 - Article

VL - 21

SP - 16

EP - 26

JO - Algal Research

JF - Algal Research

SN - 2211-9264

ER -