Growth Kinetic and Biodiesel Lipid Extraction of Nannochloropsis oculata Microalgae in a Photobioreactor under Varying Salinity Conditions

• Autorzy: Khadim Hussein Jabar , Abdelkareem Hala Naseer , Hussein Hala Ali Meer , Mohamed Ahmed Isam

Identyfikatory

DOI

10.12911/22998993/192636

• Języki publikacji: EN

Abstrakty

EN

Microalgae are microorganisms that in recent years have become protagonists in research because they are potential candidates for use in obtaining compounds of interest such as lipids, which may be transformed into bioenergy compounds like biodiesel. Nannochloropsis oculata is a marine microalga whose main characteristic is its high lipid content. In this work, the effect of salinity intensity on the growth of N. oculata was investigated in the photobioreactor batch cultures incubated with a salinity ranging from 20 to 40 ppt to analyze its growth profile and chlorophyll pigment to obtain dry biomass and biofuel produced as lipid extraction. The results indicated specific growth rate maximum values of 0.343 day-1 , obtained at 35 ppt salinity. Chlorophyll pigment increases with salt concentration between 25 and 35 ppt. The total lipid extracted increases considerably at moderate salinities condition (25–35) ppt, the maximum dry biomass harvest and productivity, accomplished after the microalgae cultivation salinity at 30 ppt was 0.623 g/l and 62.3 mg/l respectively. Same applies to the maximum total lipid content and productivity, which was 221 mg/l and 22.1 mg/l. day, respectively. These findings show that a variety of salinities support optimal biomass yield and biochemical composition in N. oculata cultivation. Salinity monitoring is crucial for successful cultivation. Furthermore, the advantages of N. oculata microalga, including its large cell size (facilitating harvest and grazer tolerance) and its salinity resilience, should be considered.

Słowa kluczowe

EN

biofuel; chlorophyll; pigment; biomass; lipid production; specific growth

• Wydawca: Polskie Towarzystwo Inżynierii Ekologicznej ; Lublin University of Technology
• Czasopismo: Journal of Ecological Engineering
• Rocznik: 2024
• Tom: Vol. 25, nr 11
• Strony: 46--54
• Opis fizyczny: Bibliogr. 32 poz., rys., tab.

Twórcy

autor

Khadim Hussein Jabar

• Environmental Engineering Department, College of Engineering, University of Baghdad, Baghdad, Iraq

• https://orcid.org/0000-0003-4266-8220

autor

Abdelkareem Hala Naseer

• Environmental Engineering Department, College of Engineering, University of Baghdad, Baghdad, Iraq

autor

Hussein Hala Ali Meer

• Environmental Engineering Department, College of Engineering, University of Baghdad, Baghdad, Iraq

autor

Mohamed Ahmed Isam

• Environmental Engineering Department, College of Engineering, University of Baghdad, Baghdad, Iraq

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