抄録
Phosphorus in water is causing Eutrophication of lakes which is globally assumed as one of the environmental problems to be solved. This study focused on the development of low-cost adsorbent for phosphorus made of waste ceramics and application of the adsorbent to the real river water and to the phosphorus recovery system. To enhance the adsorption capacity of the ceramic material, several sulphate salts were applied and washed with pure water. One of the sulphate salt (iron) resulted in the great enhancement of adsorption capacity which was ten times higher than the material itself. Equations expressing adsorption kinetics were developed assuming that flow condition was complete mixing in the adsorbent column. Calculations and data obtained in the experiments showed good accordance but further investigation would be required to have a better estimation. Application of the adsorbent to the real river water resulted in an excellent result which showed the high removal rate of phosphorus from the water for more than 250 days. And phosphorus recovery from the adsorbent using alkali was about 95 %. All results suggests that adsorbent developed here can be a good agent for phosphorus removal from the water.
