Journal of Food, Agriculture and Environment

Characterization of new algae isolated from textile wastewater plant

Author(s):

Jihane Cheriaa ^*, Fadhila Bettaieb, Ikbel Denden, Amina Bakhrouf ^*

Recieved Date: 2009-05-11, Accepted Date: 2009-10-02

Abstract:

A new microalga was isolated from a clarifier tank of an industrial textile plant. The main goal of this study was to identify and to determine optimal culture conditions of the isolated alga and to test its involvement in reducing dye pollution. The pollution reduction of four industrial textile dyes (indigo, remazol brilliant orange, direct blue and crystal violet) was evaluated with chemical oxygen demand (COD) exhaustion and with alga color removal measured under shaking conditions. Our results showed that unicellular alga has both autotrophic and heterotrophic growth with a photosynthetic activity producing pigments (chlorophyll a), thus the new isolated unicellular green alga may be Chlorella. For the green alga, optimum culture conditions were pH 8, temperature 25°C and salinity at 15 g L^-1. Furthermore, this alga has the capacity to reduce COD and color removal of indigo textile dye at rates of 89% and 46%, respectively, within five days. The results suggest the importance of unicellular green alga as an environmental preservation system.

Keywords:

Autotrophic, dyes, heterotrophic, green microalga, treatment, decolorization, salinity

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Journal: Journal of Food, Agriculture and Environment
Year: 2009
Volume: 7
Issue: 3&4
Category: Environment
Pages: 700-704

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