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