Experimental and numerical modelling of arsenic adsorption in fixed-bed dynamic columns packed with atlantic cod fish scales

Autor: Farah Rahman Omi, Avijit Basu, M. Saifur Rahaman
Rok vydání: 2015
Předmět:
Zdroj: The Canadian Journal of Chemical Engineering. 93:2024-2030
ISSN: 0008-4034
DOI: 10.1002/cjce.22294
Popis: The removal of arsenic ions from aqueous streams using the scales of Atlantic Cod species (Gadus morhua) involves adsorption and possible precipitation of its constituents, and is dependent on the number of available surface excess sites per mass unit of the bio-adsorbent. In modelling the adsorption behaviour of metal ions, the numerical code based on surface excess theory was applied using a two-dimensional mass transport model for determination of breakthrough characteristics in dynamic packed bed columns. Numerical simulation data, using surface excess theory, demonstrate a reasonably close agreement with experimental results from dynamic column tests. Parameters such as porosity, selectivity, flow rate, and adsorption coefficient contribute significantly to the variation in breakthrough time intervals associated with dynamic packed bed adsorption columns.
Databáze: OpenAIRE