Treatment of PPCPs in aqueous solution by photo/catalyst/Fenton process

Pao Yue-kong Library Electronic Theses Database

Treatment of PPCPs in aqueous solution by photo/catalyst/Fenton process

 

Author: Beiyuan, Jingzi
Title: Treatment of PPCPs in aqueous solution by photo/catalyst/Fenton process
Degree: M.Sc.
Year: 2012
Subject: Sewage -- Purification.
Hong Kong Polytechnic University -- Dissertations
Department: Dept. of Civil and Structural Engineering
Pages: ix, 91 leaves : ill. (some col.) ; 30 cm.
Language: English
InnoPac Record: http://library.polyu.edu.hk/record=b2551494
URI: http://theses.lib.polyu.edu.hk/handle/200/6847
Abstract: PPCPs (Pharmaceuticals and personal care products) raised more and more consideration because of its biological activity, increasing usage and persistency in environment. It was found that traditional wastewater treatments and biodegradation are not effective to remove the PPCPs. Thus a combined process called photo/catalyst/Fenton process which is based on advanced oxidation processes (AOPs), were investigated the degradation on ibuprofen (one of the most popular drugs in the world). Effects of different parameters were studied in this work, like initial pH, irradiation wavelength, and initial concentration of ibuprofen, dosage of Fenton’s reagent and TiO₂. It was found that acidic condition was most suitable for photo/catalyst/Fenton process, which can achieve fast degradation. However, the final degradation proportion of IBP can achieve over 95%, when pH value ranges from 4 to 9. 350 nm was selected as the irradiation wavelength because it is more effective and economical. The best ratio of Fenton's reagent was found to be 1:40 ([Fe²⁺]/[H₂O₂]). Furthermore, TiO₂ dosage of 0.5 g/L reached an economic and promising removal. TOC test proved that under neutral condition, photo/catalyst/Fenton process still acted better in mineralization than photo-Fenton process. Lastly, a simple kinetic modeling was built to for finding a relationship between rate constant and other factors like pH, initial concentration of ibuprofen, dosage of Fenton’s reagent and TiO₂. On the whole, photo/catalyst/Fenton process combines the advantages of both photo-Fenton and photocatalysis, as it could degrade more ibuprofen and achieved a better mineralization in shorter time and wider pH range.

Files in this item

Files Size Format
b25514945.pdf 2.632Mb PDF
Copyright Undertaking
As a bona fide Library user, I declare that:
  1. I will abide by the rules and legal ordinances governing copyright regarding the use of the Database.
  2. I will use the Database for the purpose of my research or private study only and not for circulation or further reproduction or any other purpose.
  3. I agree to indemnify and hold the University harmless from and against any loss, damage, cost, liability or expenses arising from copyright infringement or unauthorized usage.
By downloading any item(s) listed above, you acknowledge that you have read and understood the copyright undertaking as stated above, and agree to be bound by all of its terms.

     

Quick Search

Browse

More Information