Citation:

Ahmed, M. I., T. Chang, J. R. Selman, AND T. M. Holsen. ELECTROCHEMICAL CHROMIC ACID REGENERATION PROCESS: FITTING OF MEMBRANE TRANSPORT PROPERTIES. (R827125). JOURNAL OF MEMBRANE SCIENCE. American Chemical Society, Washington, DC, 197(1-2):63-74, (2002).

Description:

Abstract

A mathematical model was developed to predict changes in contaminant concentrations with time, and to estimate contaminant fluxes due to migration, diffusion, and convection in a laboratory-scale batch electrolysis cell for the regeneration of contaminated hard-chrome plating baths. The feed and extract compartments of the batch-cell were separated by a Nafion-117 diaphragm. The mathematical model was used to estimate process parameters and physical properties of Nafion-117 membrane from experimental results, assuming quasi-stationary operation. Best-fit ionic mobilities of Cu, Fe, and Ni through the Nafion-117 membrane were found to be 5.4, 1.7, and 5.2×10^-10 cm²/V s, respectively.

Author Keywords: Electrochemistry; Electrodialysis; Ion-exchange membranes; Membrane reactors; Transport properties

Record Details:

Record Type:DOCUMENT( JOURNAL/ PEER REVIEWED JOURNAL)

Product Published Date:03/01/2002

Record Last Revised:12/22/2005

Record ID: 68379

Show Additional Record Data

Document IDs:

EPA Number :R827125