| Recovery of nitric acid from picking solution of steels by diffusion dialysis |
| Authors： WANG Kun1, WANG Wei2，XING WeiHong3 |
| Units： （1、 Research Center of Membrane Science and Technology, State Key Laboratory of Materials-Oriented Chemical Engineering, |
| KeyWords： Picking solution; Diffusion dialysis; Anion exchange membrane |
| ClassificationCode：TQ028.8 |
| year,volume(issue):pagination： 2010,1(6):0-0 |
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Abstract： |
| Abstract: Recovery of nitric acid from picking solution of steels by diffusion dialysis was studied. Separation performance of two diffusion dialysis membranes for acid recovery was compared. Effects of flow rate and concentration of nitric acid on the concentration and retention rate of the feed by dynamic diffusion dialysis were investigated. The experimental results indicate that performance of the ion exchange membrane type APS was better than the membrane type DSV. Under suitable conditions, the recovery rate of nitric acid is higher than 85% and retention rate of metal ions are higher than 95%. Then it is proved that diffusion dialysis is a very effective operation for the separation of acid and metal salt. |
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AuthorIntro： |
| 王昆（1984－），男，湖南常德市人，硕士生，研究方向：膜分离，Email：wk1984@yeah.net。通讯联系人：邢卫红，电话025－83172288，Email：xingwh@njut.edu.cn。 |
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Reference： |
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