Adsorption of congo red dye from aqueous solution onto a low-cost natural orange peel and groundnut shell powder

摘要

Color components present in waste water are hazardous to environment. More research work is needed to remove the dye components present in wastewater. The adsorbents used for the waste water treatment should be ecofriendly. So, Orange peel and Groundnut shell powder are used as natural adsorbents for the removal of Congo red from aqueous solutions which is a carcinogenic compound from textile industry. The effects of Contact time, Initial dye concentration and Adsorbent dosage are studied in batch mode. At different adsorbent dosages(0.5g/100ml,0.75 g/100ml,1.0 g/100ml,1.25g/100ml and 1.5 g/100ml) the concentrations of the dye solutions are measured at different contact times (2hrs,4hrs,6hrs,24hrs and 30hrs) for different concentrations of dye(100ppm,150 ppm,200 ppm,250 ppm and 300ppm). Kinetic Modeling is performed using different Kinetic models like Pseudo 1st order model, Pseudo 2nd order model and Elovich model.