Study on concentrating sulfuric acid solution by membrane distillation with metal-PTFE composite membrane |
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Authors: | Zhang Guiqing Zhang Qixiu Zhou Kanggen Luo Aiping |
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Affiliation: | (1) Department of Metallurgical Science and Engineering, Central South University of Technology, 410083 Changsha, China |
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Abstract: | concentrating sulfuric acid by membrane distillation in a flat sheet direct contact membrane distillation device with a self made metal PTFE composite membrane has been studied. The effect of sulfuric acid concentration of feed, the flowrate and liquor temperature in high temperature side and low temperature side on the flux and separation efficiency is investigated. The stability of this composite membrane is also inspected. The experimental results show that the metal PTFE composite membrane can be used in membrane distillation, and its properties are very stable. It is feasible to concentrate sulfuric acid by membrane distillation with this membrane. |
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Keywords: | metal PTFE composite membrane membrane distillation sulfuric acid |
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