Research on the PVDF Hollow Fiber Gas Membrane Used for Bromine Extraction
In this paper, several types of PVDF hollow fiber membranes used in the gas membrane separation process for extracting bromine from simulated seawater or concentrated seawater were studied. The micropore, hydrophobic property, mechanical strength and material chemistry of the PVDF membranes soaked in seawater or concentrated seawater were characterized by SEM-EDX, IR, contact angle testing instrument and electronic fabric strength tester, which were compared with those of origin membranes. At last, the mass transfer coefficient and flux during a long time were gained by operating a permeation experiment with a chosen type of PVDF membrane module.
Y. Yao et al., "Research on the PVDF Hollow Fiber Gas Membrane Used for Bromine Extraction", Advanced Materials Research, Vols. 217-218, pp. 802-807, 2011