Master's Theses

Date of Award

2015

Document Type

Thesis

Department

Chemistry

First Advisor

Urs Jans

Second Advisor

Glen Kowach

Keywords

modified green rust, hydrophobic

Abstract

Hydrophobic green rusts (GR) were produced using aerial oxidation of solutions containing bis (2-ethylhexyl) sulfosuccinate (BIS) and sodium N-lauroylsarcosinate (SNLS), iron (II) sulfate and sodium hydroxide. The synthesis was conduced at constant pH 8.0±0.1 for the duration of 1-3 hrs. Partition tests showed GRBIS and GRSNLS suspended in the organic phase (tetrachloroethylene). Through X-ray diffraction analysis both GRs exhibit similar patterns to Green Rust II, an inorganic form of GR. The kinetics of GR reductive dechlorination of carbon tetrachloride (CT) was investigated. CT at high concentrations was degraded at high percentages for GRBIS-3, 88.5% and GRSNLS-5, 97.6%. Their reactions were found to follow pseudo first-order kinetics with respect to CT with rate constants of 1.7 x 10-1 h-1 and 3.3 x 10-1 h-1, respectively. These rate constants were comparable to those measured for CT dechlorination by inorganic GRSO4 (hydrophilic GR) and organic GRC12 (hydrophobic GR). Of the maximum amount of chloride that could possibly be present only 34-64% from GRSNLS-4 and 7.4-38% from GRSNLS-5 was accounted for.

Included in

Chemistry Commons

Share

COinS
 
 

To view the content in your browser, please download Adobe Reader or, alternately,
you may Download the file to your hard drive.

NOTE: The latest versions of Adobe Reader do not support viewing PDF files within Firefox on Mac OS and if you are using a modern (Intel) Mac, there is no official plugin for viewing PDF files within the browser window.