Evaluation of Electric Arc Furnace Slag as a Potential Phosphate-Removal Substrate
Publication: Journal of Environmental Engineering
Volume 136, Issue 3
Abstract
A study was conducted to evaluate the performance of locally available electric arc furnace slag (EAFS) as a substrate for removing phosphorus from wastewater. First, in a laboratory study, EAFS was found to have high phosphorus removal efficiency for three P concentrations (0.3, 3.0, and 6.0 mg/L); this resulted in nearly 100% phosphorus removal in 24 h. Next, the experiment was repeated using aeration and similar phosphorus removal was observed but in a shorter contact time of 1 h. The adsorption capacity of EAFS was determined to be 1,458 mg/kg. In a pilot-scale study, over 90% P removal took place in the first 4 h under nonaerated conditions, and nearly 100% removal in 8 h. While the P removal with aeration was relatively less initially for the shorter residence times, a 100% removal was observed for the 24-h residence time.
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Information & Authors
Information
Published In
Journal of Environmental Engineering
Volume 136 • Issue 3 • March 2010
Pages: 343 - 346
Copyright
© 2010 ASCE.
History
Received: Jan 28, 2009
Accepted: Sep 4, 2009
Published online: Sep 7, 2009
Published in print: Mar 2010
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