Adsorption of Nitrogen and Phosphorus in Water by Eggshell Modified with FeCl3

As a kind of domestic waste, eggshell has developed pore structure and good adsorption capacity. The material was selected as adsorbent to study the total nitrogen phosphorus in water. After being modified by ferric chloride, its effect is greatly enhanced. water chloride studied under different conditions. experimental results show that capacity after modification 15% ~ 40% higher than before modification. orthogonal experiment following conditions: pH value 5.00, dosage 0.050 g, time 65 min, maximum 45.34 mg/g; 4.50, 0.100 60 79.91 mg/g.