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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/16156

Title: AOX removal from industrial wastewaters using advanced oxidation processes: assessment of a combined chemical-biological oxidation
Authors: Luyten, J.
Sniegowski, K.
Van Eyck, K.
Maertens, D.
TIMMERMANS, Silke
Liers, Sven
BRAEKEN, Leen
Issue Date: 2013
Citation: WATER SCIENCE AND TECHNOLOGY, 68 (9), p. 2048-2054
Abstract: In this paper, the abatement of adsorbable halogenated organic compounds (AOX) from an industrial wastewater containing relatively high chloride concentrations by a combined chemical and biological oxidation is assessed. For chemical oxidation, the O-3/UV, H2O2/UV and photo-Fenton processes are evaluated on pilot scale. Biological oxidation is simulated in a 4 h respirometry experiment with periodic aeration. The results show that a selective degradation of AOX with respect to the matrix compounds (expressed as chemical oxygen demand) could be achieved. For O-3/UV, lowering the ratio of O-3 dosage to UV intensity leads to a better selectivity for AOX. During O-3-based experiments, the AOX removal is generally less than during the H2O2-based experiments. However, after biological oxidation, the AOX levels are comparable. For H2O2/UV, optimal operating parameters for UV and H2O2 dosage are next determined in a second run with another wastewater sample.
Notes: Braeken, L (reprint author), Katholieke Hogesch Limburg, Lab4U, Agoralaan Gebouw B, B-3590 Diepenbeek, Belgium. leen.braeken@kuleuven.be
URI: http://hdl.handle.net/1942/16156
DOI: 10.2166/wst.2013.459
ISI #: 000328070200020
ISSN: 0273-1223
Category: A1
Type: Journal Contribution
Appears in Collections: Research publications

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