期刊
SEPARATION AND PURIFICATION TECHNOLOGY
卷 80, 期 1, 页码 45-51出版社
ELSEVIER
DOI: 10.1016/j.seppur.2011.04.004
关键词
Fenton-like; Membrane; MHF reactor; FeOOH-C; AO II
资金
- Nature Science Foundations of China [20977117, 20877025]
- Nature Science Key Foundations of Guangdong Province [92510027501000005]
- Special Foundation of Sun Yat-Sen University
- Science and Technology Research Programs of Guangdong Province [0711220600311]
- Education Bureau, Guangdong Province [2010-119-120]
- New Process and Technology Project of Guangzhou EPA [2009-03]
- Nature Foundations of GuangXi Province [2011GXNSFB018020]
- Scientific Research Foundation of GuangXi University [DD131006]
- Center of Ferrate Excellence, Florida Tech, Melbourne, Florida, USA
Membrane filtration was coupled with heterogeneous Fenton-like catalytic oxidation to resolve the continuously reuse problem of fine catalysts. A new integrated (MHF) reactor was developed to allow the active species to remain in the reaction system. The reactor consisted of a newly prepared heterogeneous catalyst, superfine Fe-immobilized carbon (FeOOH-C) particles, and a submerged ceramic micro-filtration membrane separator. Experimental results showed that the membrane module could efficiently intercept FeOOH-C particles in the reactor by the synergistic cooperative sieving of the raw and dynamic membranes. A relatively steady flux was maintained, but the magnitude of the flux was affected by the concentration of the FeOOH-C. In the MHF reactor, degradation of the targeted pollutant, acid orange II (AO II), occurred continuously and efficiently without an additional separation process to recover FeOOH-C. At a FeOOH-C dose of 1 g L-1 and a residence time of 120 min, the MHF reactor could keep a constant flux of 3 L m(-2) min with a stable degradation efficiency of similar to 98% for 100 mg L-1 AO II solution. The integrated process of membrane separation and heterogeneous Fenton-like catalytic oxidation was confirmed to be an efficient process for degradation of recalcitrant organic pollutants in wastewater. (C) 2011 Elsevier B.V. All rights reserved.
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