Catalytic Ozonation of Phenolic Wastewater: Identification and Toxicity of Intermediates

36Citations
Citations of this article
48Readers
Mendeley users who have this article in their library.

This article is free to access.

Abstract

A new strategy in catalytic ozonation removal method for degradation and detoxification of phenol from industrial wastewater was investigated. Magnetic carbon nanocomposite, as a novel catalyst, was synthesized and then used in the catalytic ozonation process (COP) and the effects of operational conditions such as initial pH, reaction time, and initial concentration of phenol on the degradation efficiency and the toxicity assay have been investigated. The results showed that the highest catalytic potential was achieved at optimal neutral pH and the removal efficiency of phenol and COD is 98.5% and 69.8%, respectively. First-order modeling demonstrated that the reactions were dependent on the initial concentration of phenol, with kinetic constants varying from 0.038 min-1 ([phenol]o = 1500 mg/L) to 1.273 min-1 ([phenol]o = 50 mg/L). Bioassay analysis showed that phenol was highly toxic to Daphnia magna (LC50 96 h = 5.6 mg/L). Comparison of toxicity units (TU) of row wastewater (36.01) and the treated effluent showed that TU value, after slightly increasing in the first steps of ozonation for construction of more toxic intermediates, severely reduced at the end of reaction (2.23). Thus, COP was able to effectively remove the toxicity of intermediates which were formed during the chemical oxidation of phenolic wastewaters.

References Powered by Scopus

Technologies for the removal of phenol from fluid streams: A short review of recent developments

1196Citations
N/AReaders
Get full text

An overview of the modification methods of activated carbon for its water treatment applications

996Citations
N/AReaders
Get full text

Comparison of sulfate and hydroxyl radical based advanced oxidation of phenol

599Citations
N/AReaders
Get full text

Cited by Powered by Scopus

Photocatalytic ozonation of wastewater: a review

144Citations
N/AReaders
Get full text

Removal of metronidazole from wastewater by Fe/charcoal micro electrolysis fluidized bed reactor

79Citations
N/AReaders
Get full text

Ultraviolet and solar photocatalytic ozonation of municipal wastewater: Catalyst reuse, energy requirements and toxicity assessment

62Citations
N/AReaders
Get full text

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Cite

CITATION STYLE

APA

Farzadkia, M., Dadban Shahamat, Y., Nasseri, S., Mahvi, A. H., Gholami, M., & Shahryari, A. (2014). Catalytic Ozonation of Phenolic Wastewater: Identification and Toxicity of Intermediates. Journal of Engineering (United Kingdom), 2014. https://doi.org/10.1155/2014/520929

Readers' Seniority

Tooltip

PhD / Post grad / Masters / Doc 10

67%

Researcher 3

20%

Professor / Associate Prof. 2

13%

Readers' Discipline

Tooltip

Environmental Science 9

53%

Chemistry 4

24%

Chemical Engineering 2

12%

Engineering 2

12%

Save time finding and organizing research with Mendeley

Sign up for free