| Title |
A Preliminary Study on the Removal of Phosphorus in Water Using Loess |
| Authors |
김원기(Won Ky Kim),강선홍(Seon Hong Kang) |
| Abstract |
Since phosphorus can play an important role in eutrophication as well as nitrogen, pollution due to phosphorus has been issued globally. To remove phosphorous in water and wastewater, chemical precipitation has been generally used. However, this method needs high cost and further treatment to remove chemical sludge. In this work it was studied whether loess can be used as an adsorbent to remove phosphorous in wastewater. Synthetic wastewater was made in the laboratory. To investigate phosphorus removal efficiency, loess dosage, particle size, temperature, and pH were varied. To investigate adsorption efficiency of loess, results were applied to Freundlich and Langmuir Isotherm. As a result of this study, removal efficiency of phosphorus increased as dossage of loess and temperature increased. When loess was used in removing phosphorus in wastewater, the removal efficiency was lower than that of CaO or Ca(OH)₂. But the removal rate was higher than that of CaCO₃ or CaCl₂ · 2H₂O at 2% as weight/volume base. Isotherm experiments results using phosphorus were reasonably suitable to Freundlich and Langmuir isotherm respectively. As a conclusion, loess has a potential value as an adsorbent to remove phosphorus in wastewater. |