Journal of Chemical Engineering & Process Technology
Open Access

The photocatalytic degradation of monuron in the N-doped TiO2/Oxone/visible LED process: Mineralization and quantification of reaction intermediates

5^th World Congress on Catalysis and Chemical Engineering

September 05-06, 2018 Tokyo, Japan

Amal Abdelhaleem and Wei Chu

The Hong Kong Polytechnic University, Hong Kong

Scientific Tracks Abstracts: J Chem Eng Process Technol

Abstract :

The hybrid N-doped TiO2/Oxone/Visible LED process was proven to be efficient for mineralization of monuron and its intermediates. About 63-80% TOC reduction was achieved depending on the oxone dosage. The generated intermediates were investigated and five compounds are reported for the first time in this study. The monuron decay was found to follow four major routes as: (1) The direct hydroxylation of the aromatic ring, (2) radicals�?? attack on the N-terminal, (3) dechlorinationhydroxylation and (4) dimerization. Based on the reaction intermediates, a novel mathematical model was built up to quantify and predict the generation of intermediates in the process. Generally, the reactions were described successfully by the established model except for the monuron dimer, where its predicted decay was a little bit off. The deployment of an energy efficient LED lamp and a nonmetal dopant for oxone activation renders this process attractive for the remediation and mineralization of organic pollutants in wastewater.

Biography :

Amal has been working at Ministry of State of Environmental Affairs, Egypt. Her responsibilities have included assessment of water and wastewater quality and management of solid and hazardous wastes. She is also about to complete her Ph.D. degree from Civil and Environmental Engineering department, The Hong Kong Polytechnic University, Hong Kong.

E-mail: amal.abdelhaleem@connect.polyu.hk