Nanotechnology for Environmental Remediation

Sung Hee Joo, Frank Cheng

$251.95 $201.58

Hardback

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English

Springer-Verlag New York Inc.
23 January 2006

Analytical chemistry; Inorganic chemistry; The environment; Pollution & threats to the environment; Nanotechnology; Sanitary & municipal engineering

Series: Modern Inorganic Chemistry

Summary
Details

The book covers the recently discovered oxidative process driven by zero-valent iron (ZVI) in the presence of oxygen and a further developed system which is named ZEA (Zero-valent iron, EDTA, Air). Future potential applications for en- ronmentalremediationusingthisprocessarealsodiscussed. Theoxidativeprocess wasdiscoveredduringthecourseofmolinate(athiocarbamateherbicide)degra- tion experiments. Both ferrous iron and superoxide (or, at pH < 4. 8, hydroperoxy) radicals appear to be generated on corrosion of the ZVI with resultant production of strongly oxidizing entities capable of degrading the trace contaminant. Fenton oxidationandoxidativeby-productswereobservedduringnanosizedZVI(nZV- mediateddegradationofmolinateunderaerobicconditions. Toassessthepotential applicationofnZVIforoxidativetransformationoforganiccontaminants,thec- version of benzoic acid (BA) to p-hydroxybenzoic acid (p-HBA) was used as a probe reaction. When nZVI was added to BA-containing water, an initial pulse of p-HBA was detected during the ?rst 30 minutes, followed by the slow generation of additional p-HBA over periods of at least 24 hours. The ZEA system showed that chlorinated phenols, organophosphorus and EDTA have been degraded. The mechanism by which the ZEA reaction proceeds is hypothesized to be through reactive oxygen intermediates. The ZVI-mediated oxidation and ZEA system may be useful for in situ applications of nZVI particles and may also provide a means of oxidizing organic contaminants in granular ZVI-containing permeable reactive barriers. The purpose of this book is to provide information on the recently discovered chemical process, which could revolutionize the treatment of pesticides and c- taminated water. It also aims to offer signi?cant insights to the knowledge for potential applications of ZVI-based technology. Oxidative degradation of herbicides (e. g.

By: Sung Hee Joo, Frank Cheng
Imprint: Springer-Verlag New York Inc.
Country of Publication: United States
Dimensions: Height: 235mm, Width: 156mm, Spine: 11mm
Weight: 950g
ISBN: 9780387288253
ISBN 10: 0387288252
Series: Modern Inorganic Chemistry
Pages: 165
Publication Date: 23 January 2006
Audience: Professional and scholarly , Undergraduate
Format: Hardback
Publisher's Status: Active

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Nanotechnology for Environmental Remediation

Sung Hee Joo, Frank Cheng

$251.95 $201.58

Hardback

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