采用国产双极膜、均相阴、阳离子交换膜交替排列构成的三隔室双极膜电渗析(BMED)构型,以NaCl为原料制备NaOH和HCl.研究了电流密度、原料液浓度和电极液浓度对BMED操作性能的影响,并对两种不同的均相阳膜进行了对比考察.结果表明:在电流密度30 mA/cm2,NaCl原料液浓度为1.5mol/L的条件下,实验范围内NaOH的收率可达80.19％,其收率和能耗随电流密度的增大而增加;电流密度恒定时,较高的原料液浓度利于保持更小的膜堆电阻,过程能耗相应降低;本实验条件下,极室Na2SO4溶液在1％～2％的低浓度范围内时,过程运行效果较3％～4％的高浓度更优.采取进一步向原料室持续补充10％NaCl的操作时,5h后产品NaOH浓度可提高至10％左右,较间歇式操作时的4％水平有显著提高.
参考文献
| [1] | 徐铜文,汪志武,刘宁.双极膜的理论及应用展望[J].水处理技术,1998(01):20. |
| [2] | 徐铜文;傅荣强.双极膜技术手册[M].北京:化学工业出版社,2004 |
| [3] | Ferrer JSJ;Laborie S;Durand G;Rakib M .Formic acid regeneration by electromembrane processes[J].Journal of Membrane Science,2006(1/2):509-516. |
| [4] | Jaime Ferrer J S;Couallier E;Viers P et al.Two-compartment bipolar membrane electrodialysis for splitting of sodium formate into formic acid and sodium hydroxide,modeling[J].Journal of Membrane Science,2009,328(1-2):75-80. |
| [5] | Zhang Kai;Wang Meng;Wang Duo et al.The energy-saving production of tartaric acid using ion exchange resin-filling bipolar membrane electrodialysis[J].Journal of Membrane Science,2009,341:246-251. |
| [6] | Huang Chanhui;Xu Tongwen;Zhang Yaping et al.Application of electrodialysis to production of organic scids:state-of the-art and rescent developments[J].Journal of Membrane Science,2007,288:1-12. |
| [7] | Xu Tongwen;Yang Weihua .Citric acid production by electrodialysia with bipolar membranes[J].Chem Eng and Proce,2002,41:519-524. |
| [8] | Wang, X.;Wang, Y.;Zhang, X.;Xu, T..In situ combination of fermentation and electrodialysis with bipolar membranes for the production of lactic acid: Operational compatibility and uniformity[J].Bioresource Technology: Biomass, Bioenergy, Biowastes, Conversion Technologies, Biotransformations, Production Technologies,2012:165-171. |
| [9] | Zhu, X.;Hatzell, M.C.;Cusick, R.D.;Logan, B.E..Microbial reverse-electrodialysis chemical-production cell for acid and alkali production[J].Electrochemistry communications,2013:52-55. |
| [10] | Jiang-nan Shen;Jie Yu;Jie Huang.Preparation of highly pure tetrapropyl ammonium hydroxide using continuous bipolar membrane electrodialysis[J].Chemical engineering journal,2013:311-319. |
| [11] | Novalic S;Okwor J;Kulbe K D .The characteristics of citric acid separation using electrodialysis with bipolar membrane[J].DESALINATION,1996,105(03):277-282. |
| [12] | Lameloise M L;Lewandowski R .Recovering L-malic acid from a bererage industry waste water:Experimental study of the Conversion stage using bipolar membrane electrodialysis[J].Journal of Membrane Science,2012,403-404:196-202. |
| [13] | Ben Ali MA;Rakib M;Laborie S;Viers P;Durand G .Coupling of bipolar membrane electrodialysis and ammonia stripping for direct treatment of wastewaters containing ammonium nitrate[J].Journal of Membrane Science,2004(1/2):89-96. |
| [14] | Zhang XY;Lu WH;Yang PB;Cong W .Application of response surface methodology to optimize the operation process for regeneration of acid and base using bipolar membrane electrodialysis[J].Journal of Chemical Technology & Biotechnology,2008(1):12-19. |
| [15] | 崔树军;韩惠茹;邓会宁 等.海水淡化副产浓海水综合利用方案的探讨[J].盐化与工业,2007,37(01):36-38. |
| [16] | 麻炳辉,白永浩.海水淡化后浓海水工厂化制盐浅析[J].盐业与化工,2013(04):25-26,30. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%