ABSTRACT
The release of untreated dyes into water bodies leads to serious environmental complications because of high toxicity and high Chemical Oxygen Demand (COD). There are many techniques available to degrade dye color out of which the adsorption method, owing to its economic feasibility and simplicity in design makes it more preferable. In this contribution, the effectiveness of adsorption capacity of CuFe2O4 synthesized by sol-gel and co-precipitation method for congo red (CR) dye was investigated. The degradation of CR was investigated by UV-Visible Spectrophotometer and COD analyzer. The effects of factors like pH of the solution, temperature and the initial concentration of CR dye solution was studied. Langmuir and Freundlich Isotherms were also modeled. The present work discusses the batch operation for color degradation. The optimum color removal for 100 ppm of CR dye solution was obtained at neutral pH 7 having 97.41% removal and at 50°C having 99.45% removal. Using Langmuir isothermal model, the maximum adsorption capacity of CuFe2O4 for CR obtained is 333.33 mg g-1.
