Open AccessUse of La-, Ce-, Y-, Fe- bentonites for Removing Phosphate Ions from Aqueous Media
Author(s) -
Dóra Buzetzky,
Noémi M. Nagy,
József Kónya
Publication year - 2017
Publication title -
periodica polytechnica. chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.322
H-Index - 19
eISSN - 1587-3765
pISSN - 0324-5853
DOI - 10.3311/ppch.9871
Subject(s) - bentonite , sorption , phosphate , adsorption , chemistry , aqueous solution , precipitation , ion exchange , ion , aqueous medium , inorganic chemistry , nuclear chemistry , chemical engineering , organic chemistry , physics , meteorology , engineering
Clays play an important role in the environment. By removing cations and anions either through ion exchange, adsorption and precipitation, or all these combined, they can act as natural decontaminating agents of numerous pollutants. In this study, four modified bentonites (La-, Ce-, Y-, Fe-bentonite) were prepared and characterized, and their phosphate sorption capabilities were measured in batch experiments. Equilibrium times were also examined. The activation energy of the sorption process was calculated. The La- , Ce- and Y-bentonite can bind similar amount of phosphate ions, while iron-bentonite can bind only half of it compared to La-, Ce- and Y-bentonite.