Study of Mass Transfer Characteristics of Membrane Extraction of p-Hydroxy Benzoic Acid Aqueous Solution Using Non-Porous Silicone Rubber Membrane

Wei Li Zhang; Sen Qiao; Ai Li Zhang; Ji Ti Zhou

doi:10.4028/www.scientific.net/AMR.798-799.227

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Study of Mass Transfer Characteristics of Membrane Extraction of p-Hydroxy Benzoic Acid Aqueous Solution Using Non-Porous Silicone Rubber Membrane

Abstract:

A kind of modules with single tubular silicone rubber membranes was combined into membrane osmosis extraction for the treatment of p-hydroxy benzoic acid aqueous solution. Mass transfer process of p-hydroxy benzoic acid through membranes was studied. Based on the resistance-in-series model, the overall mass transfer coefficient (K_ov) across membrane was calculated. The effects of feed liquid flow status, system temperature and additional salt on K_ov were discussed, from which the mathematical model between flow status and system temperature was obtained.