Full metadata record
|dc.contributor||Department of Civil and Structural Engineering||en_US|
|dc.publisher||Hong Kong Polytechnic University||-|
|dc.rights||All rights reserved||en_US|
|dc.title||Oxidation of 2, 4-dichlorophenol by persulfate activated by Fe⁰||en_US|
|dcterms.abstract||2, 4-dichlorophenol (2, 4-DCP) is a commonly used chemical especially in the manufacture of other pesticide products and pharmaceuticals. Effluents of wastewater containing 2, 4-DCP are ecological hazards and they must be properly treated before discharged into the environment. This dissertation investigated the feasibility of degradation of 2, 4-DCP using persulfate as an oxidant and zero-valent iron as a catalyst in the laboratory. The effects of main factors, including the dosage of zero-valent iron, concentration of persulfate, pH value and presence of some inorganic ions on the efficiency of 2, 4-DCP degradation were investigated and optimized. The experimental result showed that 93% of 2, 4-DCP removal were achieved at the persulfate dosage of 1 mM and iron dosage of 0.025 g/L, with initial concentration of 2, 4-DCP solution at 20 mg/L (0.12 mM) within 3 hours. The experimental results also revealed that persulfate can promote the 2, 4-DCP degradation but excess amount of persulfate can limit the reaction and persulfate alone resulted in little removal of 2, 4-DCP; in acid condition, the removal efficiency increased with the increase of pH and the optimum removal was achieved at pH 6; it can also be found that the presence of anions could inhibit the degradation of 2, 4-DCP and their inhibiting effects can be ranked from low to high in an order of NO₃⁻ < C₁⁻ < C₂O₄²⁻ < H₂PO₄⁻ < HCO₃⁻ < CO₃²⁻.||en_US|
|dcterms.extent||viii, 85 leaves : ill. ; 30 cm.||en_US|
|dcterms.LCSH||Hong Kong Polytechnic University -- Dissertations||en_US|
|dcterms.LCSH||Dichlorophenol -- Oxidation||en_US|
Files in This Item:
|b23604499.pdf||For All Users (off-campus access for PolyU Staff & Students only)||9.6 MB||Adobe PDF||View/Open|
As a bona fide Library user, I declare that:
- I will abide by the rules and legal ordinances governing copyright regarding the use of the Database.
- 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.
- 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.
Please use this identifier to cite or link to this item: