Maleic Acid Oxidation Using A Heterogeneous Modified Polyacrylonitrile (PAN) Fibrous Catalyst
-
George T. Chi
and
Katherine D. Huddersman
Abstract
The effectiveness, kinetics and mechanism of oxidation of maleic acid in solution using a novel modified polyacrylonitrile (PAN) catalyst/hydrogen peroxide system was studied. The modified PAN catalyst contains immobilised Fe3+ and its reaction with hydrogen peroxide generates reactive hydroxyl radicals according to Fenton’s reaction. The effects of the amount of the modified PAN catalyst, hydrogen peroxide concentration, pH and temperature on the oxidation rate of maleic acid were investigated. The oxidation products were also determined and a reaction pathway proposed and degree of mineralisation investigated. A 95% conversion of maleic acid was achieved in 3 h and 65% TOC removed in 2 h under optimum conditions - temperature of 19 °C, with 19.59 mM H2O2 initial concentration, pH of 3.36 and 1.5 g of modified PAN catalyst. The activity of the catalyst was similar within the pH range of 3-. The pseudo first order rate constant for the oxidation of maleic acid using the modified PAN catalyst/H2O2 system was 2.2 × 10-4 min-1. A reaction mechanism has been proposed, and the main routes of the oxidation process were through formic and acetic acids.
© 2016 by Walter de Gruyter Berlin/Boston
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Articles in the same Issue
- Natural Zeolite Reactivity Towards Ozone: The Role of Acid Surface Sites
- The Effect of Operational Parameters on the Photocatalytic Degradation of C.I. Reactive Yellow 86 Textile Dye Using Manganese Zinc Oxide Nanocomposite Thin Films
- Comparison of the Effectiveness of Chlorine, Ozone, and Photocatalytic Disinfection in Reducing the Risk of Antibiotic Resistance Pollution
- Kinetic Modeling of the Photocatalytic Oxidation of Sodium Dodecylbenzenesulphonate
- Distillery Wastewater Treated by Electrochemical Oxidation with Boron-Doped Diamond Electrodes
- Visible Light Induced Photodegradation of Capsicum Red Pigment by Tm/TiO2-Loaded Cotton
- Treatment of Pharmaceutical-manufacturing Wastewaters by UV Irradiation/Hydrogen Peroxide Process
- Maleic Acid Oxidation Using A Heterogeneous Modified Polyacrylonitrile (PAN) Fibrous Catalyst
- Simulation of NOx Removal in NO/N2 Pulse Discharge System
- 2, 4-Ionene Supported Permanganate: A Novel, Efficient and Selective Solid Phase Oxidizing Agent for Oxidation of Organic Compounds
- Photooxidation in Combination with Nanotechnologies - Principles, Developments and R&D Approaches of an Advanced Technology for Water and Air Treatment - Uviblox®
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- Degradation of Ivermectin by Fenton and Photo-Fenton and Toxicity Test Using Daphnia similis
- Photocatalytic Removal of Reactive Black-5 Dye from Aqueous Solution by UV Irradiation in Aqueous TiO2: Equilibrium and Kinetics Study
- TiO2 Nano-cluster Thin Films by Dense Plasma Focus and Ion Implantation Effect on its Photocatalytic Activity
