Transformation of Trichloromethanes in Iron(ii)-Containing Environments

The oxidation state of structural Fe in clay minerals greatly alters the surface chemistry, and has a large impact on clay-organic interactions. RCCl3 were reacted with oxidized, reduced, and reoxidized forms of three different smectites, montmorillonite (Upton), ferruginous smectite (SWa-1), and nontronite (NG-1), in aqueous suspension. The adsorption rate of RCCl3 in clay minerals showed a strong correlation with the iron(II) content of the clay (r2 = 0.94). The clay surface behaves as a Bronsted base and promotes RCCl3 dehydrochlorination (elimination). The adsorption kinetics at the water-clay interface could be described by the formation of a precursor complex prior to RCCl3 dehydrochlorination.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Natural Resrouces and Environmental Sciences

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2015

Author dc:creator

• Cervini-Silva, Javiera

Contributors dc:contributor

• Larson, Richard A.

• Biogeochemistry

Language dc:language

eng

Identifier

(MiAaPQ)AAI9952983

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/83143