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Indexed by:期刊论文

Date of Publication:2010-02-01

Journal:12th Asia-Pacific-Confederation-of-Chemical-Engineering (APCChE 2008)

Included Journals:SCIE、CPCI-S

Volume:156

Issue:3

Page Number:553-556

ISSN No.:1385-8947

Key Words:Trace pollutant; Composite functional membranes; EDC; Adsorptive separation; UV/Fenton

Abstract:To develop an effective method to remove and mineralize trace organic pollutants, a series of composite functional membranes containing immobilized ACF (activated carbon fibre) powder (<300 mesh) and Ce(3+)-TiO(2), a combination of adsorbent and photo-catalyst on terylene (PET) filter cloth, was prepared by using a sol-gel and dip coating method. As high as 93% BPA (bisphenol A) pollutant can be separated successfully by adsorption onto the membrane in a series of batch adsorption tests, 40% removal was achieved in dynamic filtration/adsorption test, which also removed 98% koalinite suspended solids at the same time. The measured adsorption of BPA corresponds to 37.0, 70.6 and 62.2 mg (BPA)/g(ACF) for three membranes A, B and C, where the weight ratio of ACF to ACF + TiO(2) was 29.9%, 17.6% and 11.3% respectively in batch adsorption tests (50 ml solution) and 25.48mg (BPA)/g(ACF) for membrane A after 2 h adsorption in 200 ml solution. After dynamic filtration, the total adsorption capacity was 81.0 mg (BPA)/g(ACF) for membrane A. It is noteworthy that membrane adsorption can be regenerated by UV/Fenton treatment. Order of BPA adsorption quantity is 1st > 2nd > 3rd time use for membrane C, due to loss of ACF resulted from the supersonic treatment before oxidative regeneration. Introducing TEOS in the preparation of sol-gel solution and subsequent coating to form composite membrane, improved membrane adsorption stability in UV/Fenton regeneration treatment. (C) 2009 Elsevier B.V. All rights reserved.