Jump to main content
US EPA
United States Environmental Protection Agency
Search
Search
Main menu
Environmental Topics
Laws & Regulations
About EPA
Health & Environmental Research Online (HERO)
Contact Us
Print
Feedback
Export to File
Search:
This record has one attached file:
Add More Files
Attach File(s):
Display Name for File*:
Save
Citation
Tags
HERO ID
1987642
Reference Type
Journal Article
Title
A statistical experimental design approach for mineralization and detoxification of diethyl phthalate by H2O2/UV-C process
Author(s)
Olmez-Hanci, T; Kabdaşlı, I; Tünay, O; Ecer, C; Aydın, B
Year
2013
Is Peer Reviewed?
1
Journal
Water Science and Technology
ISSN:
0273-1223
EISSN:
1996-9732
Publisher
IWA PUBLISHING
Location
LONDON
Volume
68
Issue
4
Page Numbers
856-862
Language
English
PMID
23985516
DOI
10.2166/wst.2013.315
Web of Science Id
WOS:000323771300016
Abstract
In the present study, a three-factor central composite design (CCD) was implemented to evaluate the major factors (treatment time, initial H2O2 dose and initial diethyl phthalate (DEP) concentration) influencing the H2O2/UV-C treatment of aqueous DEP solution. Significant regression models for total organic carbon (TOC) removal and residual H2O2 concentration were derived using analysis of variance (ANOVA), which were found to be adequate to perform the process variables optimization. According to the applied ANOVA, treatment time (positive effect) and initial H2O2 dose (negative effect after an optimum value) were found to be significant on the H2O2/UV-C process performance. TOC removal efficiencies were enhanced with increasing initial H2O2 dose up to an optimum value, and further increases in H2O2 dose resulted in a decrease in TOC removals due to the hydroxyl radical scavenging effect. When initial H2O2 dose increased from 10 to 30 mM, the TOC removal efficiency improved from 41 to 100% for DEPo of 100 mg/L for treatment time of 50 min. Further increase in initial H2O2 dose to 50 mM decreased the TOC removal efficiency down to 38%. The results of toxicity assessments with Vibrio fischeri on aqueous DEP solutions subjected to H2O2/UV-C treatment revealed complete detoxification at the optimum conditions.
Keywords
acute toxicity; central composite design; diethyl phthalate; H2O2/UV-C process; optimization; response surface methodology
Tags
IRIS
•
Diethyl phthalate (DEP)
Database searches
Aug 2013 update
Pubmed
Web of Science
Jul 2014 update
Web of Science
Jan 2020 update
PubMed
Web of Science
Excluded: No Primary Data on Health Effects
Chemical treatment/disposal/remediation
Home
Learn about HERO
Using HERO
Search HERO
Projects in HERO
Risk Assessment
Transparency & Integrity