Effect of Cr(VI) in four portuguese microalgae growth

• Type: Article in International Scientific Journal
• Date: 2012

Authors

Maria Alzira P. Dinis (Author) Other; Vítor J. P. Vilar (Author) FEUP; Álvaro A. M. G. Monteiro (Author) Other; Rui A. R. Boaventura (Author) FEUP

Journal

Title: Environmental Engineering and Management Journal

Vol. 11 No. 11

Pages: 2013-2022

ISSN: 1582-9596

Publisher: Institutul Politehnic din Iasi

Indexing

ISI Web of Knowledge - 1 Citation

ISI Web of Science

Scopus - 1 Citation

Scientific classification

FOS: Natural sciences > Earth and related Environmental sciences

CORDIS: Natural sciences > Environmental science > Water science

Associated Projects

LA 20 - Projeto Estratégico-LA 20 - 2011-2012

Other information

Authenticus ID: P-002-3QF

DOI: 10.30638/eemj.2012.250

Abstract (EN): The objective of this work was to study the growth of microalgae Chlorella fusca ACOI 621, Chlorella vulgaris ACOI 879, Scenedesmus acutus ACOI 538 and Scenedesmus obliquus ACOI 550, in the presence and absence of Cr(VI). The microalgae growth was assessed as a function of different parameters, particularly, temperature, pH and Cr(VI) addition. Although growth inhibition due to Cr(VI) toxicity is rather visible for Cr(VI) >= 5 mg L-1, concentrations up to 1 mg L-1 seem not to seriously affect the algal growth. The production of metabolites (expressed in terms of dissolved organic carbon released from the microalgae to the solution) EXPRESSES the inhibition caused by toxic levels of Cr(VI) in the four microalgae, which adversely affects the sedimentation. The more marked effect of Cr(VI) on algal growth is observed in C. vulgaris culture and all these microalgae can be used for the removal of heavy metals from wastewaters. All in all, C. fusca appears to be the best choice for work involving heavy metal removal.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 10