Theses and Dissertations

Issuing Body

Mississippi State University

Advisor

Hernandez, Rafael

Committee Member

French, W. Todd

Committee Member

Toghiani, Hossein

Committee Member

Bricka, R. Mark

Committee Member

Walters, Keisha B.

Date of Degree

12-9-2006

Document Type

Graduate Thesis - Open Access

Major

Chemical Engineering

Degree Name

Master of Science

College

James Worth Bagley College of Engineering

Department

Dave C. Swalm School of Chemical Engineering

Abstract

Many nitroaromatic compounds (NACs) are considered toxic and potential carcinogens. The purpose of this study was to develop an integrated reductive/oxidative process for treating NAC contaminated waters. The process consists of the combination of zero-valent manganese or iron and a hydroxyl radical based treatment technique. Corrosion promoters were added to the contaminated water to minimize passivation of the metallic species. Water contaminated with 2,4-dinitrotoluen (DNT) was treated with the integrated process using a recirculating batch reactor. It was demonstrated that addition of corrosion promoters to the contaminated water enhanced the rate of reaction of 2,4-DNT with zero-valent iron or manganese. Results showed that iron provided greater reduction of 2,4-DNT than manganese. Chemical oxidation was used to mineralize the reduction products. The degree of mineralization was measured analyzing the samples for total organic carbon and nitrates. A proposed reaction and corrosion mechanisms and rate expressions were developed during the course of the study.

URI

https://hdl.handle.net/11668/19469

Comments

oxidation||zero-valent metal||reduction||dinitrotoluene

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