TREATMENT OF INDUSTRIAL DYE WASTE WATER AND ITS EFFECT ON GROWTH OF PISUM SATIVUM

Abstract

In India textile dyeing industry is one of the major industries that cause pollution in agricultural lands and water bodies. Effluent with higher concentrations of dyes affects the soil health and causes severe damage to the growth and quality of crops that are cultivated. Nowadays owing to global awareness and increasing concern towards deterioration of environmental quality has motivated the scientific community to carry out research to identify the pollutants that are potentially harmful to agricultural crops and organisms. The focus of this study is to identify the effect of the industrial dye (Acid orange 7) on an agriculturally important crop Pisum sativum (Garden peas). The present study focused mainly on to find the effects of this particular industrial dye on the crop by conducting experiments on the germination and growth of the plant. In our study samples of dye concentrations from 10 to 1000 mg/l is used for analyzing the germination and growth of Pisum sativum. Also this study focus on the degradation of dye by using a chemical method, Fenton oxidation and the treated effluent is also involved in the phytotoxicity analysis together with the dye and its effect on the growth and germination is studied. At low concentrations of the industrial dye the water does not affect the growth and germination but with increasing concentration the dye affects the growth considerably. The parameters studied in experiment are root length, shoot length, leave numbers , secondary root numbers, fresh weight, dry weight, germination percentage, protein content, Vitamin C content, Chlorophyll a and b content, total chlorophyll content, xanthophyll and carotene content and total non-structural carbohydrates content. From the results obtained it is concluded that the industrial dye at higher concentration is toxic to the plants. The industrial dye waste water treated with Fenton process shows less toxicity towards the plant. Hence industrial dye waste water at lower concentration can be used for irrigation after proper treatment through Fenton process.