Please use this identifier to cite or link to this item: http://hdl.handle.net/10125/10413

The Sequential Anaerobic-Aerobic Biodegradation Of PCBs In Phytoremediation Cuttings

File Description SizeFormat 
uhm_ms_3877_r.pdfVersion for non-UH users. Copying/Printing is not permitted4.68 MBAdobe PDFView/Open
uhm_ms_3877_uh.pdfVersion for UH users4.68 MBAdobe PDFView/Open

Item Summary

Title: The Sequential Anaerobic-Aerobic Biodegradation Of PCBs In Phytoremediation Cuttings
Authors: Chanthawornsawat, Yingyot
Issue Date: Aug 2004
Abstract: The sequential anaerobic-aerobic process was applied for PCB biodegradation from plant cuttings. The PCBs were absorbed by plant roots called phytoextraction. The anaerobic process dechlorinated highly chlorinated PCBs (tetra-, penta-, hexa-) to lower chlorinated PCBs (mono-, di-, tri-). Then, the aerobic cultures degraded the low chlorinated PCBs. In the experiment, Aroclor 1254, the commercial PCB mixtures, were used. The culures were fed by methanol (CH4) as a sole carbon source. The temperature was an essential parameter to control the dechlorinated state. Produced gas from the anaerobic process was collected to examine the anaerobic condition. The highly chlorinated PCBs were dechlorinated with different pathways dependent upon the dominant cultures in the process. The PCB dechloriantion was detected by gas chromatography and reported by chromatograms. The phytoabsorption showed difficulty of PCB biodegradation. The PCB removal efficiency was compared with the PCB removal from contaminated soil of the previous study.
URI/DOI: http://hdl.handle.net/10125/10413
Rights: All UHM dissertations and theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission from the copyright owner.
Appears in Collections:M.S. - Civil Engineering



Items in ScholarSpace are protected by copyright, with all rights reserved, unless otherwise indicated.