Development of Isotherms to Evaluate Removal of Dyes Using Adsorbents

Abstract

In the recent years the water reservoirs are becoming polluted due to rapid industrialization & increased growth in population. The various pollutants contained in industrial wastewater, colour is considered to be very important from the stand point of aesthetics and is stated as a visible pollutant of various industries like dye making, pulp and paper, tanneries, coffee pulping, pharmaceuticals, food processing, electroplating, distilleries, etc., spew out coloured and toxic effluents to the water bodies rendering them murky, dirty and unsuitable for further use.. Most of the colour bearing waste waters have high COD and BOD ratio and affect the stream water used for drinking purpose.In the present study attempts have been made to access the removal efficiency of adsorbents namely Maize Shell and Orange Peel in removing colours Rhodamine-B and Congo Red from synthetic wastewaters. Experiments were carried out by varying the parameters like initial dye concentration, contact time, pH, adsorbent dosage and grades of adsorbents.