Abstract
Continuous fixed-bed column study is carried out using naturally prepared adsorbents for the removal of COD, BOD, and color from textile wastewater in this chapter. The effects of parameters such as flow rate and bed height are exploited, in which adsorption efficiency increases with increasing bed height and decreases with increasing flow rate. The Thomas, Yoon-Nelson, and BDST models are applied to predict the breakthrough curves and to determine the characteristic parameters of the column useful for process design using nonlinear regression. The adsorption capacity and rate constant associated with each model for column adsorption are calculated and mentioned. The maximum adsorption capacity related to the Adams-Bohart model is found to be 725.7, 729.8, and 380.4mg/g for COD, BOD, and color, respectively, at a flow rate of 5mL/min and bed height of 30cm.
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