Przemysl Chemiczny, Vol.92, No.12, 2351-2355, 2013
Study on removal of ammonium ions on attapulgite from model solutions and sedimentary waters from municipal sewage treatment plants
Attapulgite was ground and used for removal of NH4+ ions from aq. solns. The sorption was better described with Langmuir equation than with Freundlich one. The sorption efficiency decreased with increasing the process temp. The NH4+ sorption on attapulgite increased with increasing phase contact time and decreasing temp. Its max. was at pH 6.