Abstract
Converter sludge is a byproduct produced in large amounts during the steelmaking process and is an important resource that can be utilised effectively. The present paper describes an experiment in which converter sludge was tested as an adsorbent for the removal of phosphorus from waste water. It was found that phosphorus removal was dependent on the amount of converter sludge added, the solution pH and the contact time between adsorbent and solution. Under laboratory conditions, >88% of phosphorus was removed from the waste water when sludge was added at a concentration of 20 g L−1, the contact time was 4 h and the solution pH was 4. The experimental data demonstrated that the adsorption of phosphorus to converter sludge matched the Freundlich isotherm model. Converter sludge was found to be very effective in adsorbing phosphorus.
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