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https://hdl.handle.net/2440/69810
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Type: | Journal article |
Title: | Photocatalytic treatment of high concentration carbamazepine in synthetic hospital wastewater |
Author: | Chong, M. Jin, B. |
Citation: | Journal of Hazardous Materials, 2012; 199-200:135-142 |
Publisher: | Elsevier Science BV |
Issue Date: | 2012 |
ISSN: | 0304-3894 1873-3336 |
Statement of Responsibility: | Meng Nan Chong and Bo Jin |
Abstract: | Effective and sustainable treatment of hospital wastewater containing high concentration of pharmaceutical compounds presents a pivotal challenge to wastewater and environmental engineers worldwide. In this study, a titanium dioxide (TiO(2)) nanofiber based wastewater treatment process was assessed as a pre-treatment system to treat and enhance the biodegradability of a representative pharmaceutical compound, 5000 μg/L of carbamazepine (CBZ), in synthetic hospital wastewater. Results showed that the stand-alone TiO(2) pre-treatment system was capable of removing 78% of CBZ, 40% of COD and 23% of PO(4) concentrations from the influent wastewater within a 4h reaction time. High performance size exclusion chromatography demonstrated that a simultaneous biodegradability enhancement of hospital wastewater was observed, whereby an apparent shift in molecular weight from higher fraction (>10-1000 kDa) to a lower fraction (<10 kDa) was induced after 0.5h of photocatalytic treatment. Eventually, it was found that the photodegradation profile for high concentration CBZ in synthetic hospital wastewater was perfectly fitted to the Langmuir-Hinshelwood kinetics model. It is anticipated that this TiO(2) pre-treatment process can be further integrated with a biological wastewater treatment process to deliver treated hospital effluent of better quality that can minimise the associated human health and environmental risks. |
Keywords: | Hospital wastewater Carbamazepine TiO2 Photocatalysis Nanofiber Pre-treatment |
Rights: | © 2011 Elsevier B.V. All rights reserved. |
DOI: | 10.1016/j.jhazmat.2011.10.067 |
Grant ID: | http://purl.org/au-research/grants/arc/LP0562153 http://purl.org/au-research/grants/arc/LP0562153 |
Description (link): | http://www.journals.elsevier.com/journal-of-hazardous-materials/ |
Published version: | http://dx.doi.org/10.1016/j.jhazmat.2011.10.067 |
Appears in Collections: | Aurora harvest Chemical Engineering publications Environment Institute publications |
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