Effect of the Culture Nutrients on the Biomass and Lipid Productivities of Microalgae Dunaliella tertiolecta

• Type: Article in International Conference Proceedings Book
• Date: 2013

Authors

Teresa M. Mata (Author) FEUP; Ricardo Almeida (Author) FEUP; Nídia de Sá Caetano (Author) FEUP

Conference proceedings International

Title: ICHEAP-11: 11TH INTERNATIONAL CONFERENCE ON CHEMICAL AND PROCESS ENGINEERING, PTS 1-4

Pages: 973-978

11th International Conference on Chemical and Process Engineering (ICheaP)

Milan, ITALY, JUN 02-05, 2013

Indexing

ISI Web of Knowledge - 26 Citations

ISI Web of Science

Scopus - 29 Citations

Scientific classification

FOS: Engineering and technology > Other engineering and technologies

CORDIS: Technological sciences

Other information

Authenticus ID: P-008-BH3

Abstract (EN): This work analyses the influence of macro and micronutrients on the growth, biomass and lipid productivities of Dunaliella tertiolecta (D. tertiolecta), showing that with the exception of Nitrogen (N) and Iron (Fe), the other nutrients added to the culture medium - Magnesium (Mg), Potassium (K), Manganese (Mn) and Zinc (Zn) - did not influence the studied parameters. The best maximum and average dry biomass productivities were respectively 141.8 mg/L/d and 63.1 mg/L/d, obtained in the 5th day of the test, by increasing the N concentration 10 times in comparison to the standard culture medium "artificial seawater medium with vitamins". In these conditions, the lipid content and maximum lipid productivity were respectively 33.5 % and 47.4 mg/L/d, corresponding to more than three times the value in the standard conditions (13.3 mg/L/d). Also, by increasing the Fe concentration 10 times in the culture medium, the maximum lipid productivity increased to almost the double, i.e. from 14.6 mg/L/d to 28.0 mg/L/d, obtained in the 28th day of the test. Therefore, N and Fe addition to the culture medium resulted in a significant increase in lipid productivity, suggesting that residual wastewaters rich in N or Fe could be used to cultivate D. tertiolecta for lipid production.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6