Degradation of 2-nitrophenol from petrochemical wastewater by ozone

Degradation of 2-nitrophenol from petrochemical wastewater by ozone In this project, O3 process was used for degradation and mineralization of 50 mg L–1 of 2-nitrophenol (2NP) in a semi batch reactor under variable dosage of ozone and pH. Ozonation was performed at the pH of 3, 5, 7, and 9. After 20 min of treatment, the amount of degradation was 99.8% at pH 9 compared to 90, 82.7, and 70.5% at pH 7, 5, and 3, respectively. Results revealed that the degradation efficiency of the pollutant was higher at alkaline pH than acidic ones, because of the formation of hydroxyl radicals. At pH 9, the removal of total organic carbon (TOC) and COD was reached to 31 and 72.5 %, respectively, after 60 min of reaction. The kinetic of degradation was pseudo-first-order and the rate constants and half-life of degradation reaction were determined and removal of 2NP was very higher and faster than the removal of COD. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Applied Chemistry Springer Journals

Degradation of 2-nitrophenol from petrochemical wastewater by ozone

Loading next page...
 
/lp/springer_journal/degradation-of-2-nitrophenol-from-petrochemical-wastewater-by-ozone-znbrh500zX
Publisher
Pleiades Publishing
Copyright
Copyright © 2015 by Pleiades Publishing, Ltd.
Subject
Chemistry; Chemistry/Food Science, general; Industrial Chemistry/Chemical Engineering
ISSN
1070-4272
eISSN
1608-3296
D.O.I.
10.1134/S10704272150120216
Publisher site
See Article on Publisher Site

Abstract

In this project, O3 process was used for degradation and mineralization of 50 mg L–1 of 2-nitrophenol (2NP) in a semi batch reactor under variable dosage of ozone and pH. Ozonation was performed at the pH of 3, 5, 7, and 9. After 20 min of treatment, the amount of degradation was 99.8% at pH 9 compared to 90, 82.7, and 70.5% at pH 7, 5, and 3, respectively. Results revealed that the degradation efficiency of the pollutant was higher at alkaline pH than acidic ones, because of the formation of hydroxyl radicals. At pH 9, the removal of total organic carbon (TOC) and COD was reached to 31 and 72.5 %, respectively, after 60 min of reaction. The kinetic of degradation was pseudo-first-order and the rate constants and half-life of degradation reaction were determined and removal of 2NP was very higher and faster than the removal of COD.

Journal

Russian Journal of Applied ChemistrySpringer Journals

Published: Mar 3, 2016

References

You’re reading a free preview. Subscribe to read the entire article.


DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 12 million articles from more than
10,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Unlimited reading

Read as many articles as you need. Full articles with original layout, charts and figures. Read online, from anywhere.

Stay up to date

Keep up with your field with Personalized Recommendations and Follow Journals to get automatic updates.

Organize your research

It’s easy to organize your research with our built-in tools.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

DeepDyve Freelancer

DeepDyve Pro

Price
FREE
$49/month

$360/year
Save searches from Google Scholar, PubMed
Create lists to organize your research
Export lists, citations
Read DeepDyve articles
Abstract access only
Unlimited access to over
18 million full-text articles
Print
20 pages/month
PDF Discount
20% off