Authors : Mohammad Abid Muslim Altufaily, Nesrin Jassim AL-Mansori and Alaq Fadhil Manthoor AL-Qaraghulee
Abstract: Experiments of continues and patch flow were carried out at 25±1°C in a fixed-bed column by using commercial activated carbon as an adsorbent for the removal of Methylene Blue (MB) from aqueous solution. The effect of flow rate, influent MB concentration and bed depth on the adsorption characteristics of adsorbent was investigated at pH 7. Five kinetic models, Thomas, Yoon-Nelson and Clark were applied to experimental data to predict the breakthrough curves using nonlinear regression and to determine the characteristic parameters of the column that are useful for process design while a Bed-Depth Service Time analysis (BDST) Model was used to express the effect of bed depth on breakthrough curves and to predict the time needed for breakthrough at other conditions. The Yoon-Nelson and Clark Models were found suitable for the description of whole breakthrough curve. The BDST Model was successfully applied to analyze the column performance and to evaluate the model parameter. The Empty Bed Residence Time Model (EBRT) has been used to correlate the fixed bed pilot plant experimental results and also it was found that the adsorbent exhaustion rate decreased with increasing EBRT. Error analysis was carried out to test the adequacy and accuracy of the model equations.
Mohammad Abid Muslim Altufaily, Nesrin Jassim AL-Mansori and Alaq Fadhil Manthoor AL-Qaraghulee, 2018. Investigating Design Models for the Adsorption of Methylene Blue on to Activated Carbon. Journal of Engineering and Applied Sciences, 13: 10998-11005.