Biodegradation of Different Concentration of dye (Congo red dye) by using Green and Blue Green Algae

Document Type : Original Research Paper



Releasing of textile dye effluents into general water bodies is a major environmental and health
problem. Color removal, in particular, has recently become of major scientific interest, as indicated by the
multitude of related research reports. During the past two decades, several physico-chemical decolorization
techniques have been reported, few, however, have been accepted by the textile industries.
Their lack of implementation has been largely due to high cost, low efficiency and inapplicability to a wide
variety of dyes. The ability of microorganisms to carry out dye decolorization has received much attention.
Green algae and blue green algae are considered as an important source for decolorizing dye and textile effluent.
The dye Congo red and textile dye effluent is chosen for this investigation and the green algae Haematococcus
sp., Chlorella sp., Chlorella vulgaris, Scenedesmus obliquuss, S. officinalis, and S. quadricauda and blue green
algae Arthospira maxima was used for the decolorization process. Chlorophyll, protein content of this
organism was tested before and after the treatment. Haematococcus sp shown the maximum degradation
among all the seven microalgae was found at 10ppm which was 98%, which decolorize the textile effluent
efficiently in short period of time.