Ferrous ions (Fe2+) assisted air-bubble cavitation degradation of organic pollutants

Ferrous ions (Fe2+) assisted air-bubble cavitation degradation of organic pollutants The ferrous ions (Fe2+) assistant air-bubble cavitation degradation of some organic dyes (Congo Red, Rhodamine B, Methyl Orange, and Methyl Violet) induced by air bubbles passing small glass balls was systematically investigated. Meanwhile, the influence of five operating factors, including air-bubbling time, FeSO4 ·7H2O amount, dye initial concentration, glass ball diameter, and gas flow rate, on the degradation of Congo Red dye were reviewed. Moreover, the degradation process of Congo Red is inspected by using UV–Vis, TOC, and HPLC techniques. It was found that the highest TOC removal ratio (81.42 %) was achieved under optimal conditions. On the other hand, the production and existence of ·OH radicals was testified through the oxidation of 1,5-diphenylcarbohydrazide (DPCI) forming diphenylcarbazone (DPCO). It can be inferred that the air-bubble cavitation induces ferrous ions to provide additional hydroxyl (·OH) radicals, which results in a rapid oxidation of organic dyes. Furthermore, the possible degradation process and mechanism were also discussed. All results demonstrate that this new degradation method has many advantages, such as high efficiency, energy savings, producing no secondary pollution, and being a simple device. Thus, it is expected to be feasible and promising as an advisable choice for the treatment of organic wastewater in the future. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

Ferrous ions (Fe2+) assisted air-bubble cavitation degradation of organic pollutants

Loading next page...
 
/lp/springer_journal/ferrous-ions-fe2-assisted-air-bubble-cavitation-degradation-of-organic-KCCrjMoB7N
Publisher
Springer Netherlands
Copyright
Copyright © 2014 by Springer Science+Business Media Dordrecht
Subject
Chemistry; Catalysis; Physical Chemistry; Inorganic Chemistry
ISSN
0922-6168
eISSN
1568-5675
D.O.I.
10.1007/s11164-014-1717-3
Publisher site
See Article on Publisher Site

Abstract

The ferrous ions (Fe2+) assistant air-bubble cavitation degradation of some organic dyes (Congo Red, Rhodamine B, Methyl Orange, and Methyl Violet) induced by air bubbles passing small glass balls was systematically investigated. Meanwhile, the influence of five operating factors, including air-bubbling time, FeSO4 ·7H2O amount, dye initial concentration, glass ball diameter, and gas flow rate, on the degradation of Congo Red dye were reviewed. Moreover, the degradation process of Congo Red is inspected by using UV–Vis, TOC, and HPLC techniques. It was found that the highest TOC removal ratio (81.42 %) was achieved under optimal conditions. On the other hand, the production and existence of ·OH radicals was testified through the oxidation of 1,5-diphenylcarbohydrazide (DPCI) forming diphenylcarbazone (DPCO). It can be inferred that the air-bubble cavitation induces ferrous ions to provide additional hydroxyl (·OH) radicals, which results in a rapid oxidation of organic dyes. Furthermore, the possible degradation process and mechanism were also discussed. All results demonstrate that this new degradation method has many advantages, such as high efficiency, energy savings, producing no secondary pollution, and being a simple device. Thus, it is expected to be feasible and promising as an advisable choice for the treatment of organic wastewater in the future.

Journal

Research on Chemical IntermediatesSpringer Journals

Published: Jun 3, 2014

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
Access to DeepDyve database
Abstract access only
Unlimited access to over
18 million full-text articles
Print
20 pages/month
PDF Discount
20% off