湖南大学学报（自然科学版）2012，Vol.39Issue(5)：13-17,5.
阴离子交换膜无电压下分离水中磷酸盐的研究
Study on the Removal of Phosphate from Aqueous Solution Using Anion-exchange Membrane without Supplying Electrical Potential
摘要
Abstract
The removal of phosphate from aqueous solution using the anion-exchange membrane was investigated without supplying electrical potential based on Donnan dialysis principle. The results showed that the removal efficiency of phosphate achieved 70. 0 % under the conditions of influent phosphate of 2. 0 mg/L(0. 064 5 mmol/L), the NaCl concentration of 0. 1 mol/L in the receiver solution, the flow rate of the feed solution of 5. 0 mL/min. Decreasing the initial pH of the feed solution to 3. 0, the phosphate concentration outlet in the feed solution was much higher than that with the initial pH of 5. 0～9. 0,and the removal efficiency of phosphate was only 43. 5 %. In the tested concentration range, the accompanying ani-ons (Cl- ,HCO3- and SOi2- ) had little effect on the removal of phosphate. Using Na2SO4 solution as the receiver phase, the removal of phosphate greatly reduced. Decreasing the NaCl concentration in the receiver solution had little influence on the transport of phosphate, but the concentration of phosphate in the receiver solution decreased significantly. Increasing the flow rate of the feed solution from 2. 5 mL/min to 10. 0 mL/min , the removal efficiency of phosphate decreased obviously from 84. 3 % to 61. 1 %.关键词
阴离子交换膜/补偿离子/唐南(Donnan)分离/磷酸盐Key words
anion-exchange membranescounterion/ Donnan dialysis/ phosphate分类
资源环境引用本文复制引用
陈世洋,施周,谢德华,胡远来..阴离子交换膜无电压下分离水中磷酸盐的研究[J].湖南大学学报（自然科学版）,2012,39(5):13-17,5.基金项目
国家自然科学基金资助项目(50778065) （50778065）
国家水体污染控制与治理科技重大专项项目(2009ZX07423-004) （2009ZX07423-004）
