Articles via Databases
Articles via Journals
Online Catalog
E-books
Research & Information Literacy
Interlibrary loan
Theses & Dissertations
Collections
Policies
Services
About / Contact Us
Administration
Littman Architecture Library
This site will be removed in January 2019, please change your bookmarks.
This page will redirect to https://digitalcommons.njit.edu/dissertations/1159 in 5 seconds

The New Jersey Institute of Technology's
Electronic Theses & Dissertations Project

Title: Kinetic studies of photo-initiated oxidation of toxic organic pollutants including the formation and the destruction of intermediates
Author: Li, Yuan-Shen
View Online: njit-etd1992-025
(xiv, 137 pages ~ 3.9 MB pdf)
Department: Department of Chemical Engineering, Chemistry and Environmental Science
Degree: Doctor of Philosophy
Program: Chemical Engineering
Document Type: Dissertation
Advisory Committee: Huang, Ching-Rong (Committee chair)
Hanesian, Deran (Committee member)
Knox, Dana E. (Committee member)
Shaw, Henry (Committee member)
Cheng, Su Ling (Committee member)
Date: 1992-05
Keywords: Water--Purification--Organic compounds removal.
Water--Purification--Ozonization.
Water--Purification--Ultraviolet treatment.
Water--Purification--Oxidation.
Chemical reaction, Rate of.
Intermediates (Chemistry).
Availability: Unrestricted
Abstract:

The photo-initiated oxidation process, using hydrogen peroxide or ozone under ultraviolet radiation, has been proven to be an effective treatment method for toxic organic pollutants in wastewater. Most of the recent kinetic studies of the process were concentrated on the breakdown mechanisms of the pollutant itself. The formation and the destruction of intermediates were seldom investigated. Also the mechanisms and their reaction rate constants of free radical formation and destruction in the O3/UV or H2O2/UV reactor were seldom studied.

The objective of this research is to study the kinetics of photo-initiated oxidation of toxic organic pollutants including the formation and the destruction of the intermediates. The reaction mechanisms and their rate constants of free radical formation and destruction in the ozone (O3), O3/UV, and H2O2/UV reactor were also studied. Three refractory pollutants, nitrotoluene, naphthalene and 2,4,6-trichlorophenol were conducted in a 120 liter stainless reactor and the ultraviolet radiation source was provided by a low pressure mercury lamp located at the center of the reactor. The analysis of the concentration of pollutants and their intermediates were done by high performance liquid chromatograph (HPLC). The intermediates were identified by the GC/MS and HPLC. The kinetic models developed were verified by the experimental data taken from the reactor. The Rosenbrook Hillclimb Optimization Algorithm together with the Fourth-order Runge-Kutta method were used on a digital computer to calculate the reaction rate constants. By comparing the theoretical output concentration of pollutants with the experimental results in the CSTR processes, it is believed that the calculated rate constants and the proposed kinetic models can be practically used in the photolytic oxidation waste water treatment process.


If you have any questions please contact the ETD Team, libetd@njit.edu.

 
ETD Information
Digital Commons @ NJIT
Theses and DIssertations
ETD Policies & Procedures
ETD FAQ's
ETD home

Request a Scan
NDLTD

NJIT's ETD project was given an ACRL/NJ Technology Innovation Honorable Mention Award in spring 2003