Adsorptive removal of phosphate from aqueous solutions using iron-lanthanum-doped foam glass adsorbent.

ABSTRACT: The purpose of this study was to develop an adsorbent for phosphate using iron-lanthanum-loaded foamed glass recycled from colored glass bottles. The optimal preparation conditions for the adsorbent were 0.1% iron and 1% lanthanum loaded onto the foam glass and calcined at 350°C for 2 h. Adsorption kinetics for phosphate onto the adsorbent were fitted to pseudo-second-order model. The phosphate adsorption was identified as chemisorption, which occurred due to ligand exchange. The adsorption isotherm for phosphate on the adsorbent was expressed as a Langmuir model. The maximum adsorption capacity was calculated to be 1.3 mg-P g^-1. The equilibrium constant (3.1 L mg^-1) of the adsorbent was significantly higher than that of previous studies. Hence, the adsorbent develope

SUBMITTER: Katsuura Y 

PROVIDER: S-EPMC12757142 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature