Type

Journal Article

Authors

Michael A. Morris
Justin D. Holmes
Mark P Copley
John P Hanrahan
Colm McManamon
Paul Delaney

Subjects

Chemistry

Topics
adsorption chemistry nitrogen spectrophotometry ultraviolet oxides isolation purification water porosity waste disposal fluid silicon dioxide chemical engineering x ray diffraction metals phosphates microscopy electron transmission hydrogen ion concentration

Development of chemically engineered porous metal oxides for phosphate removal. (2010)

Abstract In this study, the application of ordered mesoporous silica (OMS) doped with various metal oxides (Zr, Ti, Fe and Al) were studied for the removal of (ortho) phosphate ions from water by adsorption. The materials were characterized by means of N(2) physisorption (BET), powder X-ray diffraction (PXRD) and transmission electron microscopy (TEM). The doped materials had surface areas between 600 and 700 m(2)g(-1) and exhibited pore sizes of 44-64 Å. Phosphate adsorption was determined by measurement of the aqueous concentration of orthophosphate using ultraviolet-visible (UV-vis) spectroscopy before and after extraction. The effects of different metal oxide loading ratios, initial concentration of phosphate solution, temperature and pH effects on the efficiency of phosphate removal were investigated. The doped mesoporous materials were effective adsorbents of orthophosphate and up to 100% removal was observed under appropriate conditions. 'Back extracting' the phosphate from the doped silica (following water treatment) was also investigated and shown to have little adverse effect on the adsorbent.
Collections Ireland -> University College Cork -> PubMed

Full list of authors on original publication

Michael A. Morris, Justin D. Holmes, Mark P Copley, John P Hanrahan, Colm McManamon, Paul Delaney

Experts in our system

1
Michael A. Morris
University College Cork
Total Publications: 164
 
2
Justin D. Holmes
University College Cork
Total Publications: 287