Abstract
Concentrating sulfuric acid solution by vacuum membrane distillation with flat PEFE membrane is explored. The effects of sulfuric acid concentration, temperature of the feed, the vacuum degree of the vacuum side on the flux of membrane distillation and the separation efficiency of acid are investigated. The results illustrate that the flux of the membrane distillation increases with the rise of feed temperature and the vacuum degree of the vacuum side, but it decreases with the rise of the sulfuric acid concentration of the feed. The separation efficiency of acid is correlated with the flux of membrane distillation; the separation efficiency of the acid can amount to 100% in the process, when operative conditions are properly controlled. It can also been obtained from the experiment that, compared with other methods of membrane distillation, the vacuum membrane distillation can obtain greater distillation flux.
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References
Wu Yongnie. Membrane distillation and related membrane process. Membrane Science and Technology, 1988, 38 (2): 43–48
Xu Youyi, Xiang Hui, Chen Yuansheng, et al. The study and development of membrane distillation. Membrane Science and Technology, 1998, 18(6): 1–5
Schofield R W, Fane A G, FellC J D, et al. Factors affecting flux in membrane. Desalination, 1990, 77: 279–294
Banat F A, Simandl J. Theoretical and experimental study in membrane distillation. Desalination, 1994, 95: 39–52
Shoji K, Shin-ichi N. Transport phenomena in membrane distillation. J Mem Sci, 1987, 33(3): 285–297
Maria Tomaszewska. Concentration of the extraction fluid from sulfuric acid treatment of phosphogypsum by membrane distillation. J Mem Sci, 1993, 78: 277–282
Zhang Guiqing, Zhang Qixiu, Zhou Kanggen. Study on concentrating sulfuric acid solution by membrane distillation with metal-PTEE composite membrane. J Cent South Univ Techno, 1999, Vol. 6(2):
Bandini S, Gostoli C, Sarti G C. Separation efficiency in vacuum membrane distillation. J Membrane Sci, 1992, 73: 217–229
Bandini S, Saavedra A, Sarti G C. Vacuum membrane distillation: experiments and modeling. Aichi Journal, 1997, 43(2): 398–408
Perry R H. Manual of chemical engineering. Beijing: Chemical Industry Press, 1992(Vol.1). 3–96
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Project supported by the Key Program of the 9th Five-year Plan of China
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Zhang, G., Zhang, Q. & Zhou, K. Study on concentrating sulfuric acid solution by vacuum membrane distillation. J Cent. South Univ. Technol. 6, 99–102 (1999). https://doi.org/10.1007/s11771-999-0007-5
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DOI: https://doi.org/10.1007/s11771-999-0007-5