dc.contributor.author |
Makgato, Stanford S.
|
|
dc.contributor.author |
Nkhalambayausi-Chirwa, Evans M.
|
|
dc.date.accessioned |
2010-11-19T14:21:07Z |
|
dc.date.available |
2010-11-19T14:21:07Z |
|
dc.date.issued |
2010 |
|
dc.description.abstract |
Process water from nuclear fuel recovery unit operations contains a variety of toxic organic compounds. The use of decontamination reagents such as CCl4 together with phenolic tar results in wastewater with a high content of chlorophenols. In this study, the extent of dehalogenation of toxic aromatic compounds was evaluated using a photolytic advanced oxidation process (AOP) followed by biodegradation in the second stage. A hard-to-degrade toxic pollutant, 4-chlorophenol (4-CP), was used to represent a variety of recalcitrant aromatic pollutants in effluent from the nuclear industry. A UV-assisted AOP/bioreactor system demonstrated a great potential in treatment of nuclear process wastewater and this was indicated by high removal efficiency (> 98%) under various 4-CP concentrations. Adding hydrogen peroxide (H2O2) as a liquid catalyst further improved biodegradation rate but the effect was limited by the scavenging of OH radicals under high concentrations of H2O2. |
en_US |
dc.identifier.citation |
Makgato, SS & Nkhalambayausi-Chirwa, EM 2010, 'Performance evaluation of AOP/biological hybrid system for treatment of recalcitrant organic compounds', International Journal of Chemical Engineering, vol. 2010, Article ID 590169, 10 pages. [http://www.hindawi.com/journals/ijce/] |
en_US |
dc.identifier.issn |
1687-806X |
|
dc.identifier.other |
10.1155/2010/590169 |
|
dc.identifier.uri |
http://hdl.handle.net/2263/15337 |
|
dc.language.iso |
en |
en_US |
dc.publisher |
Hindawi Publishing Corporation |
en_US |
dc.rights |
© 2010 S.S. Makgato and E.M. Nkhalambayausi-Chirwa. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the
original work is properly cited. |
en_US |
dc.subject |
Recalcitrant organic compounds |
en_US |
dc.subject.lcsh |
Organic compounds -- Biodegradation |
en |
dc.subject.lcsh |
Aromatic compounds -- Biodegradation |
en |
dc.subject.lcsh |
Nuclear power plants -- Environmental aspects |
en |
dc.subject.lcsh |
Radioactive wastes -- Biodegradation |
en |
dc.subject.lcsh |
Reactor fuel reprocessing -- Waste disposal |
en |
dc.subject.lcsh |
Oxidation |
en |
dc.subject.lcsh |
Halogenation |
en |
dc.title |
Performance evaluation of AOP/biological hybrid system for treatment of recalcitrant organic compounds |
en_US |
dc.type |
Article |
en_US |