Kinetics of the removal of basic dye from effluent using silica

The paper assesses the ability of Sorbsil silica gel as an adsorbent for a commonly used basic dye, namely Astrazone Blue FRR69. Part I discusses results of batch experiments. Part II details fluidised bed experiments. After describing materials and methods used, conclusions are presented. Silica has a high adsorptive capacity for the basic dye Astrazone Blue in a fluidised bed system. A fluidised bed overcomes the problems of excessive pressure drops which occur across fixed beds of small silica particles. (10 references).