Boron removal from aqueous solutions by batch adsorption onto cerium oxide using full factorial design

In this study removal of boron from aqueous solutions by adsorption was investigated and experimental design was applied. Cerium oxide was used as adsorbent. In the first part of study 3 parameters effect performance and two levels of these parameters were investigated. Parameters that were chosen temperature (20 and 40°C), particle type (granule and powdered) and initial pH of boron solution (6.18 and 10). In the second part of the study linear law Langmuir and Freundlich adsorption models were applied to describe the equilibrium isotherms. Maximum boron removal was obtained at original pH value of boron solution and 40°C using powdered cerium oxide.It was verified that temperature, temperature-particle type, pH-particle type-temperature variables had influence on the boron adsorption at the level of 5% probability. The influence order was temperature > temperature-particle type > pH-particle type-temperature.