STUDY ON EXTRACTION OF BROMINE FROM SEAWATER WITH PVDF HOLLOW FIBER GAS MEMBRANE

摘要：

In this paper, the extraction of bromine from seawater and brine was studied with new type macromolecule polyvinylidene fluoride (PVDF) hollow fiber gas membrane. The results showed that increased pressure difference between two sides of the membrane can not improve flux J, so the impetus of this mass transfer process was not pressure difference, but concentration difference. Mass transfer coefficient k increased weakly with the increased pressure difference. Efficiencyη, mass transfer coefficient k and flux J were proportional to temperature.ηand k were more obvious than J, J increased greatly with the increased concentration of seawater. The influence on η, k and J caused by velocity of seawater was neglected with cycling method.

关键词： hollow fiber eztraction of bromine gas membrane PVDF

作者: WANG Guoqiang ZHANG Shufen WANG Licong YAO Ying ZHAO Rongfen

作者单位: Institute of Seawater Desalination and Multipurpose Utilization State Oceanic Administration,Tianjin 300451, China

会议类型: 国际会议

会议名称: 9th International Symposium on Salt(第九届世界盐业大会)

会议地点: 北京

会议语种:英文

页码: 1069-1075

在线出版日期: 2009-09-05（万方平台首次上网日期，不代表论文的发表时间）