DNAPL mass transfer and permeability reduction during in situ chemical oxidation with permanganate

In-Situ Chemical Oxidation

III. TECHNOLOGY DESCRIPTION AND TECHNOLOGY SELECTION FACTORS III.A. Bench-Scale Studies III.A.1. Objectives III.A.2. General Guidelines III.A.3. Oxidant Demand III.B. Pilot-Scale Studies III.B.1. Objectives III.B.2. General Guidelines III.C. Technology Applicability III.C.1. Location of Oxidant Application III.C.2. Contaminant Characteristics III.C.3. Subsurface Characteristics III.D. Site Requ...

Mass Transfer of Polynuclear Aromatic Hydrocarbons from Complex DNAPL Mixtures

Parameters governing the rates of mass transfer of the individual components of four synthetic dense non-aqueous phase liquid (DNAPL) mixtures into the aqueous phase were evaluated. The DNAPL mixtures, composed of toluene and eight polynuclear aromatic hydrocarbons (PAHs), were designed to serve as models for coal tars and creosotes. The reactor employed provided a relatively stable interface b...

Improved Understanding of In Situ Chemical Oxidation: Contaminant Oxidation Kinetics

NUMERICAL MODELING OF CHARRING MATERIAL ABLATION WITH CONSIDERING CHEMICAL REACTION, MASS TRANSFER AND SURFACE HEAT TRANSFER EFFECTS

Presently there is a little information that relates to heat shield systems.  Also this information is not certain in so many cases.  The main reason is that accurate calculations for measuring the sacrificing rate of various materials have not been obtained yet.  Additionally, the real scale test has two disadvantages: high cost and low flexibility, and for each case we must perform a new test...

Permanganate Oxidation mechanisms of Alkylarenes

Permanganate oxidation of benzaldehyde and p-nitrobenzaldehyde goes by two paths, i.e. a major one which is responsible for the normal oxidation giving good second order kinetic and minor path which involves a very small percent of a radical species formed by hydrogen atom abstraction by the permanganate ion. A mechanism involving Hydrogen atom abstraction by permanganate from the alkoxide ion ...