Adsorption of phosphorus based on Hangjin clay granular ceramic from aqueous solution and sewage: Fixed‐bed column study. Issue 5 (27th March 2017) - Yu, Yang
Abstract : The aim of this study was to evaluate the potential use of the Hangjin clay ceramic adsorbent for phosphorus removal from aqueous solution and municipal sewage in column systems. The effect of several factors, including bed depth, initial phosphorus concentration, and flow rate was investigated at room temperature. As a result, the breakthrough time increased with increasing in the bed depth, whereas inverse relationship was observed with the initial phosphorus concentration and flow rate. Moreover, municipal sewage treatment results proved the effectiveness of the adsorbent in practical application and further demonstrated some co‐existing ions in sewage had little effect on the continuous adsorption process. Adsorption models, which are the basis for the process design at a real scale, were used to estimate the characteristic parameters of columns. The dynamic adsorption kinetic data well agreed with the Adams‐Bohart and Clark models. The Yoon‐Nelson and BDST models could be successfully used to predict the breakthrough time. The observed maximum dynamic adsorption capacity of the ceramic adsorbent for phosphorus removal was 19.28 mg g −1 . The Hangjin clay granular ceramic could be used as a high‐efficiency phosphorus adsorbent in the aspect of the municipal sewage treatment. © 2017 American Institute of Chemical Engineers Environ Prog, 36: 1323–1332, 2017