Model development for naphthenic acids ozonation process

Naphthenic acids (NAs) are toxic constituents of oil sands process-affected water (OSPW) which is generated during the extraction of bitumen from oil sands. NAs consist mainly of carboxylic acids which are generally biorefractory. For the treatment of OSPW, ozonation is a very beneficial method. It...

Full description

Saved in:
Bibliographic Details
Published in:Environmental science and pollution research international 2015-02, Vol.22 (4), p.2558-2565
Main Authors: Al jibouri, Ali Kamel H, Wu, Jiangning
Format: Article
Language:English
Subjects:
Acids
Aquatic Pollution
Atmospheric Protection/Air Quality Control/Air Pollution
Batch reactors
biodegradability
Biodegradation
bitumen
Carboxylic acids
Carboxylic Acids - analysis
Carboxylic Acids - chemistry
Earth and Environmental Science
Ecotoxicology
Environment
Environmental Chemistry
Environmental Health
Environmental Restoration and Remediation
Flow rates
Gas flow
Hydrocarbons - isolation & purification
Hydrogen-Ion Concentration
Models, Chemical
naphthenates
Oil and Gas Fields
Oil sands
Oxidation
oxygen
Ozonation
Ozone
Ozone - chemistry
Petroleum Pollution - analysis
Research Article
Theoretical analysis
Toxicity
Waste Water Technology
Water Management
Water Pollutants, Chemical - analysis
Water Pollutants, Chemical - chemistry
Water Pollution Control
Water Purification
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Naphthenic acids (NAs) are toxic constituents of oil sands process-affected water (OSPW) which is generated during the extraction of bitumen from oil sands. NAs consist mainly of carboxylic acids which are generally biorefractory. For the treatment of OSPW, ozonation is a very beneficial method. It can significantly reduce the concentration of NAs and it can also convert NAs from biorefractory to biodegradable. In this study, a factorial design (2⁴) was used for the ozonation of OSPW to study the influences of the operating parameters (ozone concentration, oxygen/ozone flow rate, pH, and mixing) on the removal of a model NAs in a semi-batch reactor. It was found that ozone concentration had the most significant effect on the NAs concentration compared to other parameters. An empirical model was developed to correlate the concentration of NAs with ozone concentration, oxygen/ozone flow rate, and pH. In addition, a theoretical analysis was conducted to gain the insight into the relationship between the removal of NAs and the operating parameters.
ISSN:0944-1344
1614-7499
DOI:10.1007/s11356-014-3529-9