Packed bed column studies for the removal of Acid blue 92 and Basic red 29 using non-conventional adsorbent

Abstract

The adsorptive removal of Acid blue 92 and Basic red 29 dyes was achieved using a packed column prepared by <i style="">Euphorbia antiquorum L </i>activated carbon. The effects of various factors like influent concentration, flow rate and bed height were analysed. The column experiments using <i>Euphorbia antiquorum L </i>activated carbon showed that adsorption efficiency increases with increase in the influent concentration and bed depth and decreases with increasing flow rate. Column adsorption performance was evaluated using Thomas and Yoon-Nelson kinetic models. The adsorption capacity calculated by Thomas and Yoon-Nelson models were compared with the experimental adsorption capacity. The Yoon-Nelson model describes the adsorption behaviour of the selected adsorbent-adsorbate system more reasonably than Thomas model and Basic red 29 adsorption behaviour fits exceptionally well with the Yoon-Nelson model.