Determination of photoautotrophic growth and inhibition kinetics by the Monod and the Aiba models and bioenergetics of local microalgae strain

TUNAY D., YILDIRIM Ö., ÖZKAYA B., DEMİR A.

Chemosphere, vol.292, 2022 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 292
  • Publication Date: 2022
  • Doi Number: 10.1016/j.chemosphere.2021.133330
  • Journal Name: Chemosphere
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Aerospace Database, Aqualine, Aquatic Science & Fisheries Abstracts (ASFA), Artic & Antarctic Regions, BIOSIS, Biotechnology Research Abstracts, CAB Abstracts, Chemical Abstracts Core, Chimica, Communication Abstracts, Compendex, EMBASE, Environment Index, Food Science & Technology Abstracts, Geobase, Greenfile, MEDLINE, Metadex, Pollution Abstracts, Public Affairs Index, Veterinary Science Database, Civil Engineering Abstracts
  • Keywords: Kinetic model, Microalgal growth, Mixed culture, Specific growth rate, Inorganic carbon, INORGANIC CARBON, WASTE-WATER, BIOMASS PRODUCTIVITY, CHLORELLA-VULGARIS, MASS CULTIVATION, NUTRIENT REMOVAL, LIGHT-INTENSITY, ALGAE, NITROGEN, PH
  • Yıldız Technical University Affiliated: Yes

Abstract

© 2021The usage of fossil fuels results in a high amount of greenhouse gas (GHG) emissions and renewable green energy requirements entail saving ecological balance. Therefore, microalgae cultivation is widespread as a suitable raw material to produce renewable and sustainable fuel. Mathematical models are useful tools for the estimation of different conditions of a system. In this study, mathematical models were developed for monitoring the cultivation of local species of microalgae based on the chlorophyll-a and biomass concentration. Coefficients that were calculated from the Monod kinetic model were μmax; 0.03 day−1, KS, Ci; 0.53 mM with an R2 value of 0.93 and from the Aiba inhibition kinetic model was μmax and KS, Ci 1.48 day−1 and 0.08 mM with an R2 value of 0,73. According to the literature, there was no model was developed for the determination of kinetic coefficients based on chlorophyll-a production due to the inorganic carbon consumption. While both growth and inhibition models were developed for the inorganic carbon consumption, chlorophyll-a concentration was used for the growth model and biomass concentration was used for the inhibition model which caused and directly affected by the decrease of light penetration. The maximum biomass and chlorophyll-a concentrations were found as 1.2 g/L and 27.8 mg/L respectively with 10.24 mg/L. day−1 nitrogen and 1.19 mg/L.day−1 phosphorus uptake rate.