Removal of aquaculture therapeutants by carbon adsorption 1. Equilibrium adsorption behaviour of single components

This paper presents data on batch equilibrium adsorption onto the coal-base d activated carbon 207EA (Sutcliffe Speakman) of Malachite Green, formalin, Chloramine-T and Oxytetracycline. These substances are widely used in aqua culture to control fish parasites and disease, but few data were previously available on their adsorption behaviour. In addition, equilibrium adsorpti on data for carbon 207EA are presented for the mixed dissolved organic carb on (DOC) typically present in the water where fish are reared, as well as f or D-glucose. Together, these data permit the design of carbon adsorption t reatment units that will remove both therapeutants and DOC without causing stress to the fish stock. It further removes the need for land-based recycl e systems to discharge these mixed effluents untreated to the environment. (C) 2000 Elsevier Science B.V. All rights reserved.