The present study reveals the potential of green macroalgae Caulerpa racemosa & Ulva lactuca in the treatment of reactive azo dyes effluent. The decolorization efficiency was measured at different concentration and pH. The pollutant removal capacity of these macro algae Caulerpa racemosa and Ulva lactuca was evaluated by physico-chemical analysis of effluent indicates potential decrease in total dissolved solids and phosphates but ammoniacal nitrogen is found increased in both the treatments. The biochemical analysis of accumulated macro algae shows declining content of protein, total sugar, chlorophyll-a, chlorophyll-b, total chlorophyll and carotenoid with increasing days of treatment and effluent concentration. The Fourier transform infrared analysis reveals the accumulation of dye components into the algal cell functional groups which bind inside them. The Ulva lactuca shows significant decolorization in the present study. Thus the study reveals bioremediation potential of green macro algae which can be applicable in the industrial waste water treatment systems.
