Pollution Research Paper

Vol 33, Issue 03, 2014 ; Page No.(531-536 )

BIOACCUMULATION STUDY BY LEMNA GIBBA LIN

D. SIVAKUMAR, D. SHANKAR, P. DHIVYA AND K. BALASUBRAMANIAN

Abstract

Textile industry processes are among the most environmentally unfriendly industrial processes, because they produce colour effluent that is heavily pollute the environment. Therefore, effluent from textile industry has to be treated before being discharged into the environment. In this study, experiments were performed to remove the EC, sulphates and COD from the textile industrial effluent in constructed wetlands by using aquatic macrophytes Lemna gibba L. The experiments were conducted by different process parameters like nutrient dosage, dilution ratio, pH and contact time using Lemna gibba L. to reduce EC, sulphates and COD in a textile industry effluent. From the experiments it was found that the maximum percentage reduction of various parameters in a textile industry wastewater by Lemna gibba L. were obtained at an optimum nutrient dosage of 50 g, dilution ratio of 10, pH of 7 and contact time of 6 days. Similarly, the validation experiments results showed that the maximum removal percentage of sulphate in a textile industry effluent is lesser than the maximum removal of sulphate in an aqueous solution. Finally this study concluded that Lemna gibba L. might be used as absorbents for removing various parameters in a textile industry effluent.

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